期刊
ACS NANO
卷 17, 期 11, 页码 10965-10975出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.3c03095
关键词
seawater electrolysis; hydrogen production; hydrazine oxidation; bifunctional electrocatalyst; heterostructure
This study presents a bifunctional electrocatalyst of porous Ni foam-supported interfacial heterogeneous Ni(2)P/Co2P microspheres, which demonstrates excellent bifunctional electrocatalytic performance. The concept of potential coincidence region proposed in this work has significant implications for water electrolysis and other related applications.
Hydrazine-assisted water electrolysispresents a promisingenergyconversion technology for highly efficient hydrogen production. Owingto the potential coincidence region between hydrogen evolution reaction(HER) and hydrazine electro-oxidation, hydrazine oxidation reaction(HzOR) exhibits specific advantages on strategy combination, deviceconstruction, and application expansion. Herein, we report a bifunctionalelectrocatalyst of porous Ni foam-supported interfacial heterogeneousNi(2)P/Co2P microspheres (denoted NiCoP/NF), whichtakes full advantage of this potential coincidence region. Thanksto the 3D microsphere structure and strong interfacial coupling effectsbetween Ni2P and Co2P, NiCoP/NF demonstratesexcellent bifunctional electrocatalytic performance, requiring ultralowoverpotentials of 70 and 230 mV at 10 mA cm(-2) forHER and HzOR, respectively. When using NiCoP/NF as both electrodes,HzOR-assisted water electrolysis exhibits considerably decreased potentialscompared with the electro-oxidation of other chemical substrates.Furthermore, the potential coincidence region of 0.1 V makes the applicationof self-activated/propelled hydrazine-assisted alkaline seawater electrolysis,hydrazine-containing wastewater treatment, and Zn-hydrazine(Zn-Hz) battery realistic. The concept of potential coincidence regionprovided in this work has significant implications for water electrolysisand other related applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据