期刊
NANO RESEARCH
卷 9, 期 6, 页码 1856-1865出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-016-1078-x
关键词
oxygen evolution reaction; metal-organic frameworks (MOFs); in situ decomposition; ultrathin nanosheets; electrocatalyst
类别
资金
- National Basic Research Program of China [2012CB932800]
- National Natural Science Foundation of China [51171092]
- Ph.D. Programs Foundation of the Chinese Ministry of Education [20120042110031]
- Fundamental Research Funds of Shandong University
- Tianjin Municipal Science and Technology Commission
The oxygen evolution reaction (OER) is a pivotal process for water-splitting and many other energy technologies involving oxygen electrodes. Herein, a new synthesis strategy is proposed to prepare OER catalysts based on a simple yet flexible in situ decomposition of Co-based acetate hydroxide metal-organic frameworks (MOFs). This process allows straightforward fabrication of various 2D hydroxide ultrathin nanosheets (UNSs) with excellent component controllability. The as-obtained Co-based hydroxide UNSs demonstrate superior catalytic activity for the OER due to the exposure of numerous active sites. In particular, the CoNi hydroxide UNSs exhibit low overpotentials (eta) of 324 and 372 mV at current densities of 10 and 100 mA center dot cm(-2), respectively; a large turnover frequency (TOF) of 0.16 s(-1) at eta = 380 mV; and a small Tafel slope of 33 mV center dot dec(-1) in an alkaline environment. Importantly, these values are superior to those of the state-of-theart IrO2 commercial electrocatalyst. This facile strategy enables the exploration of more efficient and economic OER electrocatalysts with various constituents and opens a promising avenue for large-scale fabrication of functional nanocatalysts for use in clean energy technologies.
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