110th Anniversary: A Total Water Splitting Electrocatalyst Based on Borate/Fe Co-Doping of Nickel Sulfide
110th Anniversary: A Total Water Splitting Electrocatalyst Based on Borate/Fe Co-Doping of Nickel Sulfide
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DOI：
10.1021/acs.iecr.9b01976
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发表时间：
2019-06
影响因子：
4.2
通讯作者：
Zhao Zhang;Tianran Zhang;J. Lee
中科院分区：
文献类型：
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作者：
Zhao Zhang;Tianran Zhang;J. Lee
设计在析氧反应(OER)和析氢反应(HER)中都有效的可调低成本电催化剂是清洁生产氢气的核心，而不依赖于铂族金属(PGMS)，后者是当今最著名的这些反应的电催化剂。本研究采用自模板法制备了一种组成可调的催化剂集成电极(泡沫镍表面的双掺杂Ni3S2中空微球)，该电极的掺杂含量可以很容易地随前驱物而变化。催化剂集成电极在碱性电解液中表现出令人印象深刻的OER和HER活性以及良好的催化剂稳定性。该电极在全电化学水分解中的性能相当优异，只需要364 mV的小过电位就可以产生50 mA cm-2的电流密度。较强的总裂水性能可以归因于使用了互补的阴离子(硼酸盐)和阳离子(Fe)掺杂。
The design of tunable low-cost electrocatalysts efficient in both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) is central to the clean production of hydrogen without the reliance on platinum group metals (PGMs), which are the best known electrocatalysts for these reactions today. In this study, a catalyst-integrated electrode with a tunable composition (borate/Fe dual-doped Ni3S2 hollow microspheres on nickel foam) was fabricated by a self-templating method where the dopant contents can be easily varied by the precursor compounds. The catalyst-integrated electrode showed impressive OER and HER activities and good catalyst stability in an alkaline electrolyte. The performance of this electrode for total electrochemical water splitting was quite exceptional, requiring only a small overpotential of 364 mV to yield 50 mA cm–2 of current density. The strong total water splitting performance can be attributed to the use of complementary anionic (borate) and cationic (Fe) doping ...