Amorphous Nickel-Based Thin Film As a Janus Electrocatalyst for Water Splitting

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National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, People’s Republic of China
Key Laboratory of Modern Acoustics of MOE and Institute of Acoustics, Department of Physics, Nanjing University, Nanjing 210093, People’s Republic of China
§ Department of Physics, Ningbo University, Ningbo 315211, People’s Republic of China
*(X.L.W.) E-mail: [email protected]. Tel: +86-25-83686303. Fax: +86-25-83595535.
Cite this: J. Phys. Chem. C 2014, 118, 9, 4578–4584
Publication Date (Web):February 12, 2014
https://doi.org/10.1021/jp408153b
Copyright © 2014 American Chemical Society
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Abstract

Hydrogen generated by water splitting provides a renewable energy source, but development of materials with efficient electrocatalytic water splitting capability is challenging. Thin-film electrocatalytic material (H2–NiCat) with robust water reduction properties, which can be readily prepared by a reduction-induced electrodeposition method from nickel salts in a borate-buffered electrolyte (pH 9.2), is reported. The material consists of nanoparticles with nickel oxide or hydroxide species located at the surface and metallic nickel in the bulk. The catalyst mediates H2 evolution in a near-neutral aqueous buffer at low overpotential. The catalyst requires a subsequent oxidative pretreatment in order to attain a well-defined hydrogen evolution reaction (HER) activity, and the 1.5 h anodized catalyst film exhibits a HER current density of about 1.50 mA cm–2 at 0.452 V overpotential over a period of 24 h with no observable corrosion. In addition, it can be converted by anodic equilibration into an amorphous Ni-based oxide film (O2–NiCat) to catalyze O2 evolution, and the switch between the two catalytic forms is fully reversible. The robust, bifunctional, switchable, and noble-metal-free catalytic material has immense potential in artificial solar water-splitting devices.

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XRD analysis of the H2–NiCat film; electrodeposition processes of the H2–NiCat and 1.5 h anodized H2–NiCat films; characterizations and properties of the 1.5 h anodized H2–NiCat material; XAS characterization of the catalyst film under polarization switching measurement. This material is available free of charge via the Internet at http://pubs.acs.org.

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  2. Qing Zhang, Cui Ye, Xiao Lin Li, Yang Hui Deng, Bai Xiang Tao, Wei Xiao, Ling Jie Li, Nian Bing Li, Hong Qun Luo. Self-Interconnected Porous Networks of NiCo Disulfide as Efficient Bifunctional Electrocatalysts for Overall Water Splitting. ACS Applied Materials & Interfaces 2018, 10 (33) , 27723-27733. https://doi.org/10.1021/acsami.8b04386
  3. Rong Zhang, Zao Wang, Shuai Hao, Ruixiang Ge, Xiang Ren, Fengli Qu, Gu Du, Abdullah M. Asiri, Baozhan Zheng, and Xuping Sun . Surface Amorphization: A Simple and Effective Strategy toward Boosting the Electrocatalytic Activity for Alkaline Water Oxidation. ACS Sustainable Chemistry & Engineering 2017, 5 (10) , 8518-8522. https://doi.org/10.1021/acssuschemeng.7b01952
  4. Ahamed Irshad and Nookala Munichandraiah . Electrodeposited Nickel–Cobalt–Sulfide Catalyst for the Hydrogen Evolution Reaction. ACS Applied Materials & Interfaces 2017, 9 (23) , 19746-19755. https://doi.org/10.1021/acsami.6b15399
  5. Lin Yang, Lisi Xie, Ruixiang Ge, Rongmei Kong, Zhiang Liu, Gu Du, Abdullah M. Asiri, Yadong Yao, and Yonglan Luo . Core–Shell [email protected] Nanoarray: In Situ Electrochemical Surface Derivation Preparation toward Efficient Water Oxidation Electrocatalysis in near-Neutral Media. ACS Applied Materials & Interfaces 2017, 9 (23) , 19502-19506. https://doi.org/10.1021/acsami.7b01637
  6. Ruixiang Ge, Hongbin Du, Kai Tao, Qiuju Zhang, and Liang Chen . Cobalt-Borate Nanoarray: An Efficient and Durable Electrocatalyst for Water Oxidation under Benign Conditions. ACS Applied Materials & Interfaces 2017, 9 (18) , 15383-15387. https://doi.org/10.1021/acsami.7b00184
  7. Weiyi Wang, Danni Liu, Shuai Hao, Fengli Qu, Yongjun Ma, Gu Du, Abdullah M. Asiri, Yadong Yao, and Xuping Sun . High-Efficiency and Durable Water Oxidation under Mild pH Conditions: An Iron Phosphate–Borate Nanosheet Array as a Non-Noble-Metal Catalyst Electrode. Inorganic Chemistry 2017, 56 (6) , 3131-3135. https://doi.org/10.1021/acs.inorgchem.6b03171
  8. Shiping Wang, Jing Wang, Minglei Zhu, Xiaobing Bao, Bingyang Xiao, Diefeng Su, Haoran Li, and Yong Wang . Molybdenum-Carbide-Modified Nitrogen-Doped Carbon Vesicle Encapsulating Nickel Nanoparticles: A Highly Efficient, Low-Cost Catalyst for Hydrogen Evolution Reaction. Journal of the American Chemical Society 2015, 137 (50) , 15753-15759. https://doi.org/10.1021/jacs.5b07924
  9. Jinfa Chang, Yao Xiao, Meiling Xiao, Junjie Ge, Changpeng Liu, and Wei Xing . Surface Oxidized Cobalt-Phosphide Nanorods As an Advanced Oxygen Evolution Catalyst in Alkaline Solution. ACS Catalysis 2015, 5 (11) , 6874-6878. https://doi.org/10.1021/acscatal.5b02076
  10. Jian Zhao, Phong D. Tran, Yang Chen, Joachim S. C. Loo, James Barber, and Zhichuan J. Xu . Achieving High Electrocatalytic Efficiency on Copper: A Low-Cost Alternative to Platinum for Hydrogen Generation in Water. ACS Catalysis 2015, 5 (7) , 4115-4120. https://doi.org/10.1021/acscatal.5b00556
  11. Xiang Liu, Huafei Zheng, Zijun Sun, Ali Han, and Pingwu Du . Earth-Abundant Copper-Based Bifunctional Electrocatalyst for Both Catalytic Hydrogen Production and Water Oxidation. ACS Catalysis 2015, 5 (3) , 1530-1538. https://doi.org/10.1021/cs501480s
  12. Lu Gan, Thomas L. Groy, Pilarisetty Tarakeshwar, Shobeir K. S. Mazinani, Jason Shearer, Vladimiro Mujica, and Anne K. Jones . A Nickel Phosphine Complex as a Fast and Efficient Hydrogen Production Catalyst. Journal of the American Chemical Society 2015, 137 (3) , 1109-1115. https://doi.org/10.1021/ja509779q
  13. Xingxing Yu, Tianyi Hua, Xiang Liu, Zhiping Yan, Peng Xu, and Pingwu Du . Nickel-Based Thin Film on Multiwalled Carbon Nanotubes as an Efficient Bifunctional Electrocatalyst for Water Splitting. ACS Applied Materials & Interfaces 2014, 6 (17) , 15395-15402. https://doi.org/10.1021/am503938c
  14. Juzhe Liu, Lin Guo. In situ self-reconstruction inducing amorphous species: A key to electrocatalysis. Matter 2021, 4 (9) , 2850-2873. https://doi.org/10.1016/j.matt.2021.05.025
  15. Mabrook S Amer, Prabhakarn Arunachalam, Abdulaziz M. Alsalman, Abdullah M Al-Mayouf, Zeyad A. Almutairi, Saba A. Aladeemy, Mahmoud Hezam. Facile Synthesis of Amorphous Nickel Iron Borate Grown on Carbon Paper as Stable Electrode Materials for Promoted Electrocatalytic Urea Oxidation. Catalysis Today 2021, 6 https://doi.org/10.1016/j.cattod.2021.09.036
  16. Munu Borah, Anirban Sikdar, Samadhan Kapse, Abhisek Majumdar, Pronoy Dutta, Golam Masud Karim, Sujit Deb, Ranjit Thapa, Uday Narayan Maiti. Stable and boosted oxygen evolution efficiency of mixed metal oxide and borate planner heterostructure over heteroatom (N) doped electrochemically exfoliated graphite foam. Catalysis Today 2021, 370 , 83-92. https://doi.org/10.1016/j.cattod.2021.01.007
  17. . Applications of Amorphous Nanomaterials in Electrocatalysis. 2021,,, 223-268. https://doi.org/10.1002/9783527826360.ch9
  18. Doudou Zhang, Joshua Zheyan Soo, Hark Hoe Tan, Chennupati Jagadish, Kylie Catchpole, Siva Krishna Karuturi. Earth‐Abundant Amorphous Electrocatalysts for Electrochemical Hydrogen Production: A Review. Advanced Energy and Sustainability Research 2021, 2 (3) , 2000071. https://doi.org/10.1002/aesr.202000071
  19. Yan Dong, Sridhar Komarneni. Strategies to Develop Earth‐Abundant Heterogeneous Oxygen Evolution Reaction Catalysts for pH‐Neutral or pH‐Near‐Neutral Electrolytes. Small Methods 2021, 5 (1) , 2000719. https://doi.org/10.1002/smtd.202000719
  20. Luhao Kang, Jie Tang, Shuai Tang, Kun Zhang, Yukinori Hato, Yoshihiko Takeda, Lu-Chang Qin. Reduced graphene oxide decorated with crystallized cobalt borate nanoparticles as an anode in lithium ion capacitors. Chemical Physics Letters 2020, 759 , 137964. https://doi.org/10.1016/j.cplett.2020.137964
  21. Hanqing Pan, Christopher J. Barile. Titanium nitride-supported Cu–Ni bifunctional electrocatalysts for CO 2 reduction and the oxygen evolution reaction. Sustainable Energy & Fuels 2020, 4 (11) , 5654-5664. https://doi.org/10.1039/D0SE01150A
  22. Hanqing Pan, Christopher J. Barile. Bifunctional nickel and copper electrocatalysts for CO 2 reduction and the oxygen evolution reaction. Journal of Materials Chemistry A 2020, 8 (4) , 1741-1748. https://doi.org/10.1039/C9TA12055F
  23. Sengeni Anantharaj, Suguru Noda. Amorphous Catalysts and Electrochemical Water Splitting: An Untold Story of Harmony. Small 2020, 16 (2) , 1905779. https://doi.org/10.1002/smll.201905779
  24. Umesh P. Suryawanshi, Mahesh P. Suryawanshi, Uma V. Ghorpade, Seung Wook Shin, Jihun Kim, Jin Hyeok Kim. An earth-abundant, amorphous cobalt-iron-borate (Co-Fe-Bi) prepared on Ni foam as highly efficient and durable electrocatalysts for oxygen evolution. Applied Surface Science 2019, 495 , 143462. https://doi.org/10.1016/j.apsusc.2019.07.204
  25. M.L.N. Thi, T.H. Tran, P.D. Hai Anh, H.-T. Nhac-Vu, Q.B. Bui. Hierarchical zinc–nickel phosphides nanosheets on 3D nickel foam as self-support electrocatalysts for hydrogen evolution reaction. Polyhedron 2019, 168 , 80-87. https://doi.org/10.1016/j.poly.2019.04.050
  26. Prashanth W. Menezes, Arindam Indra, Ivelina Zaharieva, Carsten Walter, Stefan Loos, Stefan Hoffmann, Robert Schlögl, Holger Dau, Matthias Driess. Helical cobalt borophosphates to master durable overall water-splitting. Energy & Environmental Science 2019, 12 (3) , 988-999. https://doi.org/10.1039/C8EE01669K
  27. Xiaohu Cao, Yifan Wang, Junqi Lin, Yong Ding. Ultrathin CoO x nanolayers derived from polyoxometalate for enhanced photoelectrochemical performance of hematite photoanodes. Journal of Materials Chemistry A 2019, 7 (11) , 6294-6303. https://doi.org/10.1039/C8TA12330F
  28. ZhiYu Shao, Hui Qi, Xia Wang, Jing Sun, NianKun Guo, Keke Huang, Qin Wang. Boosting oxygen evolution by surface nitrogen doping and oxygen vacancies in hierarchical NiCo/NiCoP hybrid nanocomposite. Electrochimica Acta 2019, 296 , 259-267. https://doi.org/10.1016/j.electacta.2018.11.006
  29. Qianwen Liu, Mengdi Wang, Yishan He, Xuxu Wang, Wenyue Su. Photochemical route for synthesizing Co–P alloy decorated ZnIn 2 S 4 with enhanced photocatalytic H 2 production activity under visible light irradiation. Nanoscale 2018, 10 (40) , 19100-19106. https://doi.org/10.1039/C8NR05934A
  30. Wenqing Deng, Rui Dai, Chao You, Pingyue Hu, Xuping Sun, Xiaoli Xiong, Ke Huang, Feng Huo. In Situ Formation of a 3D Amorphous Cobalt- Borate Nanoarray: An Efficient Non-Noble Metal Catalytic Electrode for Non-Enzyme Glucose Detection. ChemistrySelect 2018, 3 (38) , 10580-10584. https://doi.org/10.1002/slct.201800646
  31. Yuyao Ji, Min Ma, Xuqiang Ji, Xiaoli Xiong, Xuping Sun. Nickel-carbonate nanowire array: An efficient and durable electrocatalyst for water oxidation under nearly neutral conditions. Frontiers of Chemical Science and Engineering 2018, 12 (3) , 467-472. https://doi.org/10.1007/s11705-018-1717-8
  32. Xueying Cao, Liang Cui, Xiaoxia Wang, Wenrong Yang, Jingquan Liu. Nickel-Borate/Reduced Graphene Oxide Nanohybrid: A Robust and Efficient Electrocatalyst for Oxygen Evolution Reaction in Alkaline and Near Neutral Media. ChemCatChem 2018, 10 (13) , 2826-2832. https://doi.org/10.1002/cctc.201800312
  33. Yan Gao, Hu Chen, Lu Ye, Zhongkai Lu, Yanan Yao, Yu Wei, Xuyang Chen. Highly effective electrochemical water oxidation by copper oxide film generated in situ from Cu(II) tricine complex. Chinese Journal of Catalysis 2018, 39 (3) , 479-486. https://doi.org/10.1016/S1872-2067(17)62892-4
  34. Samit Majumder, Ashraf Abdel Haleem, Perumandla Nagaraju, Yoshinori Naruta. Remarkable Improvement in Water Oxidation Catalysis by Moderate Heat Treatment of a Crystalline Silver-Based Thin Film Developed In-Situ From Silver-ions in Acetate Solution. ChemistrySelect 2018, 3 (2) , 678-682. https://doi.org/10.1002/slct.201702876
  35. Prashanth W. Menezes, Chakadola Panda, Stefan Loos, Florian Bunschei-Bruns, Carsten Walter, Michael Schwarze, Xiaohui Deng, Holger Dau, Matthias Driess. A structurally versatile nickel phosphite acting as a robust bifunctional electrocatalyst for overall water splitting. Energy & Environmental Science 2018, 11 (5) , 1287-1298. https://doi.org/10.1039/C7EE03619A
  36. Zao Wang, Fengyu Xie, Zhiang Liu, Gu Du, Abdullah M. Asiri, Xuping Sun. High‐Performance Non‐Enzyme Hydrogen Peroxide Detection in Neutral Solution: Using a Nickel Borate Nanoarray as a 3D Electrochemical Sensor. Chemistry – A European Journal 2017, 23 (64) , 16179-16183. https://doi.org/10.1002/chem.201704038
  37. Dan Zhou, Liangbo He, Rong Zhang, Shuai Hao, Xiandeng Hou, Zhiang Liu, Gu Du, Abdullah M. Asiri, Chengbin Zheng, Xuping Sun. Co 3 O 4 Nanowire Arrays toward Superior Water Oxidation Electrocatalysis in Alkaline Media by Surface Amorphization. Chemistry - A European Journal 2017, 23 (62) , 15601-15606. https://doi.org/10.1002/chem.201703565
  38. Karthik S. Bhat, Harish C. Barshilia, H.S. Nagaraja. Porous nickel telluride nanostructures as bifunctional electrocatalyst towards hydrogen and oxygen evolution reaction. International Journal of Hydrogen Energy 2017, 42 (39) , 24645-24655. https://doi.org/10.1016/j.ijhydene.2017.08.098
  39. Ling Zhang, Rong Zhang, Ruixiang Ge, Xiang Ren, Shuai Hao, Fengyu Xie, Fengli Qu, Zhiang Liu, Gu Du, Abdullah M. Asiri, Baozhan Zheng, Xuping Sun. Facilitating Active Species Generation by Amorphous NiFe-B i Layer Formation on NiFe-LDH Nanoarray for Efficient Electrocatalytic Oxygen Evolution at Alkaline pH. Chemistry - A European Journal 2017, 23 (48) , 11499-11503. https://doi.org/10.1002/chem.201702745
  40. Min Ma, Guilei Zhu, Fengyu Xie, Fengli Qu, Zhiang Liu, Gu Du, Abdullah M. Asiri, Yadong Yao, Xuping Sun. Homologous Catalysts Based on Fe-Doped CoP Nanoarrays for High-Performance Full Water Splitting under Benign Conditions. ChemSusChem 2017, 10 (16) , 3188-3192. https://doi.org/10.1002/cssc.201700693
  41. Xiao Ma, Min Ma, Danni Liu, Shuai Hao, Fengli Qu, Gu Du, Abdullah M. Asiri, Xuping Sun. Core-Shell-Structured NiS 2 @Ni-B i Nanoarray for Efficient Water Oxidation at Near-Neutral pH. ChemCatChem 2017, 9 (16) , 3138-3143. https://doi.org/10.1002/cctc.201700350
  42. Jian Jiang, Mei Wang, Wensheng Yan, Xiaofeng Liu, Jinxuan Liu, Jinlong Yang, Licheng Sun. Highly active and durable electrocatalytic water oxidation by a NiB 0.45 /NiO x core-shell heterostructured nanoparticulate film. Nano Energy 2017, 38 , 175-184. https://doi.org/10.1016/j.nanoen.2017.05.045
  43. Min Ma, Fengli Qu, Xuqiang Ji, Danni Liu, Shuai Hao, Gu Du, Abdullah M. Asiri, Yadong Yao, Liang Chen, Xuping Sun. Bimetallic Nickel-Substituted Cobalt-Borate Nanowire Array: An Earth-Abundant Water Oxidation Electrocatalyst with Superior Activity and Durability at Near Neutral pH. Small 2017, 13 (25) , 1700394. https://doi.org/10.1002/smll.201700394
  44. Wence Xu, Hongxia Wang. Earth-abundant amorphous catalysts for electrolysis of water. Chinese Journal of Catalysis 2017, 38 (6) , 991-1005. https://doi.org/10.1016/S1872-2067(17)62810-9
  45. Ruixiang Ge, Xiang Ren, Fengli Qu, Danni Liu, Min Ma, Shuai Hao, Gu Du, Abdullah M. Asiri, Liang Chen, Xuping Sun. Three-Dimensional Nickel-Borate Nanosheets Array for Efficient Oxygen Evolution at Near-Neutral pH. Chemistry - A European Journal 2017, 23 (29) , 6959-6963. https://doi.org/10.1002/chem.201700408
  46. Shrivats Semwal, Joyanta Choudhury. Switch in Catalyst State: Single Bifunctional Bi-state Catalyst for Two Different Reactions. Angewandte Chemie 2017, 129 (20) , 5648-5652. https://doi.org/10.1002/ange.201702142
  47. Shrivats Semwal, Joyanta Choudhury. Switch in Catalyst State: Single Bifunctional Bi-state Catalyst for Two Different Reactions. Angewandte Chemie International Edition 2017, 56 (20) , 5556-5560. https://doi.org/10.1002/anie.201702142
  48. Jinfa Chang, Qing Lv, Guoqiang Li, Junjie Ge, Changpeng Liu, Wei Xing. Core-shell structured Ni12P5/Ni3(PO4)2 hollow spheres as difunctional and efficient electrocatalysts for overall water electrolysis. Applied Catalysis B: Environmental 2017, 204 , 486-496. https://doi.org/10.1016/j.apcatb.2016.11.050
  49. Liang Cui, Fengli Qu, Jingquan Liu, Gu Du, Abdullah M. Asiri, Xuping Sun. Interconnected Network of Core-Shell [email protected] for Efficient Water Oxidation Electrocatalysis under Near Neutral Conditions. ChemSusChem 2017, 10 (7) , 1370-1374. https://doi.org/10.1002/cssc.201700113
  50. Xuqiang Ji, Liang Cui, Danni Liu, Shuai Hao, Jingquan Liu, Fengli Qu, Yongjun Ma, Gu Du, Abdullah M. Asiri, Xuping Sun. A nickel-borate nanoarray: a highly active 3D oxygen-evolving catalyst electrode operating in near-neutral water. Chemical Communications 2017, 53 (21) , 3070-3073. https://doi.org/10.1039/C6CC09893B
  51. Yuancai Ge, Shang-Peng Gao, Pei Dong, Robert Baines, Pulickel M. Ajayan, Mingxin Ye, Jianfeng Shen. Insight into the hydrogen evolution reaction of nickel dichalcogenide nanosheets: activities related to non-metal ligands. Nanoscale 2017, 9 (17) , 5538-5544. https://doi.org/10.1039/C6NR09977G
  52. Min Ma, Danni Liu, Shuai Hao, Rongmei Kong, Gu Du, Abdullah M. Asiri, Yadong Yao, Xuping Sun. A nickel–borate–phosphate nanoarray for efficient and durable water oxidation under benign conditions. Inorganic Chemistry Frontiers 2017, 4 (5) , 840-844. https://doi.org/10.1039/C6QI00594B
  53. Ruixiang Ge, Min Ma, Xiang Ren, Fengli Qu, Zhiang Liu, Gu Du, Abdullah M. Asiri, Liang Chen, Baozhan Zheng, Xuping Sun. A NiCo 2 O 4 @Ni–Co–Ci core–shell nanowire array as an efficient electrocatalyst for water oxidation at near-neutral pH. Chemical Communications 2017, 53 (55) , 7812-7815. https://doi.org/10.1039/C7CC03146G
  54. Elza D. Sultanova, Aida I. Samigullina, Natalya V. Nastapova, Irek R. Nizameev, Kirill V. Kholin, Vladimir I. Morozov, Aidar T. Gubaidullin, Vitaliy V. Yanilkin, Marsil K. Kadirov, Albina Y. Ziganshina, Alexander I. Konovalov. Highly active Pd–Ni nanocatalysts supported on multicharged polymer matrix. Catalysis Science & Technology 2017, 7 (24) , 5914-5919. https://doi.org/10.1039/C7CY01797A
  55. Samit Majumder, Ashraf Abdel Haleem, Perumandla Nagaraju, Yoshinori Naruta. A new preparation of a bifunctional crystalline heterogeneous copper electrocatalyst by electrodeposition using a Robson-type macrocyclic dinuclear copper complex for efficient hydrogen and oxygen evolution from water. Dalton Transactions 2017, 46 (28) , 9131-9139. https://doi.org/10.1039/C7DT01594A
  56. Min-Quan Yang, Jiadong Dan, Stephen J. Pennycook, Xin Lu, Hai Zhu, Qing-Hua Xu, Hong Jin Fan, Ghim Wei Ho. Ultrathin nickel boron oxide nanosheets assembled vertically on graphene: a new hybrid 2D material for enhanced photo/electro-catalysis. Materials Horizons 2017, 4 (5) , 885-894. https://doi.org/10.1039/C7MH00314E
  57. Xuqiang Ji, Shuai Hao, Fengli Qu, Jingquan Liu, Gu Du, Abdullah M. Asiri, Liang Chen, Xuping Sun. Core–shell CoFe 2 O 4 @Co–Fe–Bi nanoarray: a surface-amorphization water oxidation catalyst operating at near-neutral pH. Nanoscale 2017, 9 (23) , 7714-7718. https://doi.org/10.1039/C7NR02929B
  58. Xuqiang Ji, Xiang Ren, Shuai Hao, Fengyu Xie, Fengli Qu, Gu Du, Abdullah M. Asiri, Xuping Sun. Remarkable enhancement of the alkaline oxygen evolution reaction activity of NiCo 2 O 4 by an amorphous borate shell. Inorganic Chemistry Frontiers 2017, 4 (9) , 1546-1550. https://doi.org/10.1039/C7QI00340D
  59. Min Ma, Yiwei Liu, Xiao Ma, Ruixiang Ge, Fengli Qu, Zhiang Liu, Gu Du, Abdullah M. Asiri, Yadong Yao, Xuping Sun. Highly efficient and durable water oxidation in a near-neutral carbonate electrolyte electrocatalyzed by a core–shell structured [email protected]–Ci nanosheet array. Sustainable Energy Fuels 2017, 1 (6) , 1287-1291. https://doi.org/10.1039/C7SE00218A
  60. Guilei Zhu, Ruixiang Ge, Fengli Qu, Gu Du, Abdullah M. Asiri, Yadong Yao, Xuping Sun. In situ surface derivation of an Fe–Co–Bi layer on an Fe-doped Co 3 O 4 nanoarray for efficient water oxidation electrocatalysis under near-neutral conditions. Journal of Materials Chemistry A 2017, 5 (14) , 6388-6392. https://doi.org/10.1039/C7TA00740J
  61. Zhicai Xing, Linfeng Gan, Jin Wang, Xiurong Yang. Experimental and theoretical insights into sustained water splitting with an electrodeposited nanoporous nickel [email protected] film as an electrocatalyst. Journal of Materials Chemistry A 2017, 5 (17) , 7744-7748. https://doi.org/10.1039/C7TA01907F
  62. Shuai Hao, Yingchun Yang. Water splitting in near-neutral media: using an Mn–Co-based nanowire array as a complementary electrocatalyst. Journal of Materials Chemistry A 2017, 5 (24) , 12091-12095. https://doi.org/10.1039/C7TA03198J
  63. Benjamin C. M. Martindale, Erwin Reisner. Bi-Functional Iron-Only Electrodes for Efficient Water Splitting with Enhanced Stability through In Situ Electrochemical Regeneration. Advanced Energy Materials 2016, 6 (6) , 1502095. https://doi.org/10.1002/aenm.201502095
  64. Chunde Wang, Jun Jiang, Tao Ding, Guihuan Chen, Wenjing Xu, Qing Yang. Monodisperse Ternary NiCoP Nanostructures as a Bifunctional Electrocatalyst for Both Hydrogen and Oxygen Evolution Reactions with Excellent Performance. Advanced Materials Interfaces 2016, 3 (4) , 1500454. https://doi.org/10.1002/admi.201500454
  65. Nan Jiang, Bo You, Meili Sheng, Yujie Sun. Bifunctionality and Mechanism of Electrodeposited Nickel-Phosphorous Films for Efficient Overall Water Splitting. ChemCatChem 2016, 8 (1) , 106-112. https://doi.org/10.1002/cctc.201501150
  66. Jinfa Chang, Liang Liang, Chenyang Li, Minglei Wang, Junjie Ge, Changpeng Liu, Wei Xing. Ultrathin cobalt phosphide nanosheets as efficient bifunctional catalysts for a water electrolysis cell and the origin for cell performance degradation. Green Chemistry 2016, 18 (8) , 2287-2295. https://doi.org/10.1039/C5GC02899J
  67. Isolda Roger, Mark D. Symes. First row transition metal catalysts for solar-driven water oxidation produced by electrodeposition. Journal of Materials Chemistry A 2016, 4 (18) , 6724-6741. https://doi.org/10.1039/C5TA09423B
  68. Hongxing Jia, Yuchuan Yao, Yuyue Gao, Dapeng Lu, Pingwu Du. Pyrolyzed cobalt porphyrin-based conjugated mesoporous polymers as bifunctional catalysts for hydrogen production and oxygen evolution in water. Chemical Communications 2016, 52 (92) , 13483-13486. https://doi.org/10.1039/C6CC06972J
  69. Hasimur Rahaman, Koushik Barman, Sk. Jasimuddin, Sujit Kumar Ghosh. Hybrid Mn 3 O 4 –NiO nanocomposites as efficient photoelectrocatalysts towards water splitting under neutral pH conditions. RSC Advances 2016, 6 (114) , 113694-113702. https://doi.org/10.1039/C6RA22499G
  70. Julian A. Vigil, Timothy N. Lambert, Benjamin T. Christensen. Cobalt phosphide-based nanoparticles as bifunctional electrocatalysts for alkaline water splitting. Journal of Materials Chemistry A 2016, 4 (20) , 7549-7554. https://doi.org/10.1039/C6TA00637J
  71. Yi-Hsuan Lai, David W. Palm, Erwin Reisner. Multifunctional Coatings from Scalable Single Source Precursor Chemistry in Tandem Photoelectrochemical Water Splitting. Advanced Energy Materials 2015, 5 (24) , 1501668. https://doi.org/10.1002/aenm.201501668
  72. Guan-Qun Han, Yan-Ru Liu, Wen-Hui Hu, Bin Dong, Xiao Li, Xiao Shang, Yong-Ming Chai, Yun-Qi Liu, Chen-Guang Liu. Three dimensional nickel oxides/nickel structure by in situ electro-oxidation of nickel foam as robust electrocatalyst for oxygen evolution reaction. Applied Surface Science 2015, 359 , 172-176. https://doi.org/10.1016/j.apsusc.2015.10.097
  73. Jianwei Miao, Fang-Xing Xiao, Hong Bin Yang, Si Yun Khoo, Jiazang Chen, Zhanxi Fan, Ying-Ya Hsu, Hao Ming Chen, Hua Zhang, Bin Liu. Hierarchical Ni-Mo-S nanosheets on carbon fiber cloth: A flexible electrode for efficient hydrogen generation in neutral electrolyte. Science Advances 2015, 1 (7) https://doi.org/10.1126/sciadv.1500259
  74. Yi-Hsuan Lai, Hyun S. Park, Jenny Z. Zhang, Peter D. Matthews, Dominic S. Wright, Erwin Reisner. A Si Photocathode Protected and Activated with a Ti and Ni Composite Film for Solar Hydrogen Production. Chemistry - A European Journal 2015, 21 (10) , 3919-3923. https://doi.org/10.1002/chem.201406566
  75. José Ramón Galán-Mascarós. Water Oxidation at Electrodes Modified with Earth-Abundant Transition-Metal Catalysts. ChemElectroChem 2015, 2 (1) , 37-50. https://doi.org/10.1002/celc.201402268
  76. Xin Li, Jiaguo Yu, Jingxiang Low, Yueping Fang, Jing Xiao, Xiaobo Chen. Engineering heterogeneous semiconductors for solar water splitting. Journal of Materials Chemistry A 2015, 3 (6) , 2485-2534. https://doi.org/10.1039/C4TA04461D
  77. Lucas-Alexandre Stern, Ligang Feng, Fang Song, Xile Hu. Ni 2 P as a Janus catalyst for water splitting: the oxygen evolution activity of Ni 2 P nanoparticles. Energy & Environmental Science 2015, 8 (8) , 2347-2351. https://doi.org/10.1039/C5EE01155H
  78. Jia Liang, Yingchao Yang, Jing Zhang, Jingjie Wu, Pei Dong, Jiangtan Yuan, Gengmin Zhang, Jun Lou. Metal diselenide nanoparticles as highly active and stable electrocatalysts for the hydrogen evolution reaction. Nanoscale 2015, 7 (36) , 14813-14816. https://doi.org/10.1039/C5NR03724G
  79. Lucas-Alexandre Stern, Xile Hu. Enhanced oxygen evolution activity by NiO x and Ni(OH) 2 nanoparticles. Faraday Discuss. 2014, 176 , 363-379. https://doi.org/10.1039/C4FD00120F
  80. Nan Jiang, Lia Bogoev, Marina Popova, Sheraz Gul, Junko Yano, Yujie Sun. Electrodeposited nickel-sulfide films as competent hydrogen evolution catalysts in neutral water. J. Mater. Chem. A 2014, 2 (45) , 19407-19414. https://doi.org/10.1039/C4TA04339A