期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 26, 期 18, 页码 4112-4119出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201904337
关键词
bifunctional catalysts; hollow nanotube structures; hydrogen evolution reaction; overall water splitting; oxygen evolution reaction
资金
- National Natural Science Foundation of China [21978022] Funding Source: Medline
Hydrogen energy is considered as one of the ideal clean energies for solving the energy shortage and environmental issues, and developing highly efficient electrocatalysts for overall water splitting to produce hydrogen is still a huge challenge. Herein, for the first time, Ru-doped Cu2+1O vertically arranged nanotube arrays in situ grown on Cu foam (Ru/Cu2+1O NT/CuF) are reported and further investigated for their catalytic properties for overall water splitting. The Ru/Cu2+1O NT/CuF presents ultrahigh catalytic activities for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline conditions, and it exhibits a small overpotential of 32 mV at 10 mA cm(-2) in the HER, and only needs 210 mV overpotential to achieve a current density of 10 mA cm(-2) in the OER. Importantly, the alkaline electrolyzer using Ru/Cu2+1O NT/CuF as a bifunctional electrocatalyst only needs 1.53 V voltage to deliver a current density of 10 mA cm(-2), which is much lower than the benchmark of IrO2(+)/Pt(-) counterpart (1.64 V at 10 mA cm(-2)). The excellent performance of the Ru/Cu2+1O NT/CuF catalyst is attributed to its high conductive substrate and special Ru-doped nanotube structure, which provides a high electrochemical active surface area and 3D gas diffusion channel.
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