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Tungsten promoted nickel phosphide nanosheets supported on carbon cloth: An efficient and stable bifunctional electrocatalyst for overall water splitting
International Journal of Hydrogen Energy ( IF 8.1 ) Pub Date : 2021-09-24 , DOI: 10.1016/j.ijhydene.2021.09.012
Shanshan Li 1 , Yuanjian Liu 1 , Yudong Wu 1 , Xiangheng Du 1 , Jibiao Guan 1 , Lina Wang 1 , Ming Zhang 1
Affiliation  

It is of great significance to develop a highly active, durable and inexpensive bifunctional electrocatalyst for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Herein, we report a tungsten-doped nickel phosphide nanosheets based on carbon cloth (W–Ni2P NS/CC) as an efficient bifunctional catalyst through simple hydrothermal and phosphorization for overall water splitting in 1 M KOH. The W–Ni2P NS/CC exhibits excellent electrochemical performance with low overpotentials for HER (η10 = 71 mV, η50 = 160 mV) and OER (η20 = 307 mV, η50 = 382 mV) in 1 M KOH, as well as superior long-term stability. Moreover, W–Ni2P NS/CC as a bifunctional catalyst reveals remarkable activity with a low voltage of 1.55 V to reach a current density of 20 mA cm−2. This work provides a viable bifunctional catalyst for the overall water splitting.



中文翻译:

碳布负载的钨促进磷化镍纳米片:一种高效稳定的双功能电催化剂,用于整体水分解

开发一种用于析氢反应(HER)和析氧反应(OER)的高活性、耐用且廉价的双功能电催化剂具有重要意义。在此,我们报道了一种基于碳布(W-Ni 2 P NS/CC)的掺钨磷化镍纳米片作为一种高效的双功能催化剂,通过简单的水热和磷化在 1 M KOH 中进行整体水分解。W-Ni 2 P NS/CC 在 1 M KOH 中表现出优异的电化学性能,HER (η 10  = 71 mV, η 50  = 160 mV) 和 OER (η 20  = 307 mV, η 50 = 382 mV) 的过电位较低,以及卓越的长期稳定性。此外,W-Ni 2P NS/CC 作为双功能催化剂在 1.55 V 的低电压下显示出显着的活性,达到 20 mA cm -2的电流密度。这项工作为整个水分解提供了一种可行的双功能催化剂。

更新日期:2021-10-18
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