Wu Rui, Xiao Bing, Gao Qiang, Zheng Ya-Rong, Zheng Xu-Sheng, Zhu Jun-Fa, Gao Min-Rui, Yu Shu-Hong
Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Chemistry, CAS Centre for Excellence in Nanoscience, Hefei Science Centre of CAS, University of Science and Technology of China, Hefei, 230026, China.
State Key Laboratory of Electric Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, 710049, China.
Angew Chem Int Ed Engl. 2018 Nov 19;57(47):15445-15449. doi: 10.1002/anie.201808929. Epub 2018 Oct 31.
Transition-metal phosphides have stimulated great interest as catalysts to drive the hydrogen evolution reaction (HER), but their use as bifunctional catalytic electrodes that enable efficient neutral-pH water splitting has rarely been achieved. Herein, we report the synthesis of ternary Ni Co P porous nanosheets onto conductive carbon fiber paper that can efficiently and robustly catalyze both the HER and water oxidation in 1 m phosphate buffer (PBS; pH 7) electrolyte under ambient conditions. A water electrolysis cell comprising the Ni Co P electrodes demonstrates remarkable activity and stability for the electrochemical splitting of neutral-pH water. We attribute this performance to the new ternary Ni Co P structure with porous surfaces and favorable electronic states resulting from the synergistic interplay between nickel and cobalt. Ternary metal phosphides hold promise as efficient and low-cost catalysts for neutral-pH water splitting devices.
过渡金属磷化物作为驱动析氢反应（HER）的催化剂引起了人们极大的兴趣，但它们作为能够实现高效中性pH值水分解的双功能催化电极却鲜有报道。在此，我们报告了在导电碳纤维纸上合成三元NiCoP多孔纳米片，该纳米片能够在环境条件下，在1M磷酸盐缓冲液（PBS；pH 7）电解质中高效且稳定地催化HER和水氧化反应。由NiCoP电极组成的水电解池在中性pH值水的电化学分解方面表现出显著的活性和稳定性。我们将这种性能归因于具有多孔表面的新型三元NiCoP结构以及镍和钴之间协同相互作用所产生的有利电子态。三元金属磷化物有望成为中性pH值水分解装置的高效低成本催化剂。
