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Interfacial engineering of Ni/V 2 O 3 for hydrogen evolution reaction
Nano Research ( IF 9.5 ) Pub Date : 2020-06-17 , DOI: 10.1007/s12274-020-2865-y
Yang Chen , Yuan Rao , Rongzhi Wang , Yanan Yu , Qiulin Li , Shujuan Bao , Maowen Xu , Qin Yue , Yanning Zhang , Yijin Kang

Electrocatalytic water splitting offers a sustainable route for hydrogen production, enabling the clean and renewable alternative energy system of hydrogen economy. The scarcity and high-cost of platinum-group-metal (PGM) materials urge the exploration of high-performance non-PGM electrocatalysts. Herein, a unique hierarchical structure of Ni/V2O3 with extraordinary electrocatalytic performance (e.g., overpotentials as low as 22 mV at 20 mA·cm−2 and 94 mV at 100 mA·cm−2) toward hydrogen evolution reaction in alkaline electrolyte (1 M KOH) is reported. The investigation on the hierarchical Ni/V2O3 with a bimodal size-distribution also offers insight of interfacial engineering that only proper Ni/V2O3 interface can effectively improve H2O adsorption, H2O dissociation as well as H adsorption, for an efficient hydrogen production.



中文翻译:

Ni / V 2 O 3的界面工程用于析氢反应

电催化水分解为氢生产提供了一条可持续的途径,从而实现了清洁,可再生的氢能源替代能源系统。铂族金属(PGM)材料的稀缺性和高成本促使人们探索高性能非PGM电催化剂。在此,Ni / V 2 O 3具有独特的分级结构,具有优异的电催化性能(例如,在碱性条件下对氢析出反应具有超电势,例如在20 mA·cm -2时低至22 mV,在100 mA·cm -2时低至94 mV )。据报道电解液(1 M KOH)。Ni / V 2 O 3分层研究具有双峰分布的分布还提供了界面工程学的见识,即只有适当的Ni / V 2 O 3界面才能有效地改善H 2 O吸附,H 2 O离解和H吸附,从而有效地制氢。

更新日期:2020-06-17
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