NiCo2S4 纳米线阵列作为高效双功能电催化剂，用于全水分解具有优异的活性。
NiCo2S4 nanowires array as an efficient bifunctional electrocatalyst for full water splitting with superior activity.
机构信息
Department of Chemistry and Chemical Engineering, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China.
出版信息
Nanoscale. 2015 Oct 7;7(37):15122-6. doi: 10.1039/c5nr04064g.
The present communication reports the topotactic conversion of NiCo2O4 nanowires array on carbon cloth (NiCo2O4 NA/CC) into NiCo2S4 NA/CC, which is used as an efficient bifunctional electrocatalyst for water splitting with good durability and superior activity in 1.0 M KOH. This NiCo2S4 NA/CC electrode produces 100 mA cm(-2) at an overpotential of 305 mV for hydrogen evolution and 100 mA cm(-2) at an overpotential of 340 mV for oxygen evolution. To afford a 10 mA cm(-2) water-splitting current, the alkaline water electrolyzer made from NiCo2S4 NA/CC needs a cell voltage of 1.68 V, which is 300 mV less than that for NiCo2O4 NA/CC, and has good stability.
本通讯报道了将 NiCo2O4 纳米线阵列在碳布上的原位转化（NiCo2O4 NA/CC 到 NiCo2S4 NA/CC），将其作为一种高效的双功能电催化剂用于水分解，具有良好的耐久性和在 1.0 M KOH 中的优异活性。这种 NiCo2S4 NA/CC 电极在析氢反应中产生 100 mA cm(-2) 的电流密度时需要 305 mV 的过电势，在析氧反应中产生 100 mA cm(-2) 的电流密度时需要 340 mV 的过电势。为了提供 10 mA cm(-2) 的水分解电流，由 NiCo2S4 NA/CC 制成的碱性水电解槽需要 1.68 V 的电池电压，比 NiCo2O4 NA/CC 少 300 mV，并且具有良好的稳定性。
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