Bimetallic vanadium-molybdenum nitrides using magnetron co-sputtering as alkaline hydrogen evolution catalyst

Bimetallic vanadium-molybdenum nitrides using magnetron co-sputtering as alkaline hydrogen evolution catalyst
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使用磁控共溅射作为碱性析氢催化剂的双金属钒钼氮化物

DOI:
10.1016/j.elecom.2018.07.012
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发表时间:
2018-08
影响因子:
5.4
通讯作者:
Wang Zhoucheng
Wang Zhoucheng
中科院分区:
工程技术3区
文献类型:
--
作者:
Wei Binbin;Tang Guisheng;Liang Hanfeng;Qi Zhengbing;Zhang Dongfang;Hu Wenshen;Shen Hao;Wang Zhoucheng

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开发具有高催化活性的先进材料用于电催化应用,对于缓解能源危机至关重要。在本工作中,我们首次报道了磁控共溅射制备双金属钒-氮化钼(MoVN)薄膜的新方法,并进一步展示了其在析氢反应(HER)中的应用。当用作HER催化剂时,所制备的MoVN薄膜电极表现出优异的电催化活性,特别是在碱性电解液中,与裸VN和Mo2N相比,提供了108 mV的低过电位,从而提供了10 mA cm−2的电流密度,60 mV −1的塔菲尔斜率,以及优异的长期耐久性。最重要的是,我们的研究为探索双金属过渡金属氮化物家族中新的HER催化剂材料提供了机会。
Developing advanced materials with high catalytic activity for electrocatalytic applications is of vital importance to mitigate the energy crisis. In this work, we for the first time report a novel method to prepare bimetallic vanadium‑molybdenum nitride (MoVN) thin films by magnetron co-sputtering and further demonstrate their applications for hydrogen evolution reaction (HER). When used as HER catalysts, the resulting MoVN thin film electrodes show superior electrocatalytic activity especially in alkaline electrolyte in contrast to bare VN and Mo2N, delivering a low overpotential of 108 mV to afford a current density of 10 mA cm−2, a Tafel slope of 60 mV dec−1, as well as excellent long-term durability. Most importantly, our study opens opportunities to explore new HER catalyst materials in the family of bimetallic transition metal nitrides.
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