Electrochemical etching of alpha-cobalt hydroxide for improvement of oxygen evolution reaction
Liu, PF; Yang, S; Zheng LR(郑黎荣); Zheng, LR; Zhang, B; Yang, HG
刊名JOURNAL OF MATERIALS CHEMISTRY A
2016
卷号4期号:24页码:9578-9584
DOI10.1039/c6ta04078k
文章类型期刊论文
英文摘要Exploring low-cost and high-efficiency electrocatalysts for oxygen evolution reaction (OER) is of paramount importance to develop large-scale alkaline water-splitting electrolyzers (AWEs). Cobalt-based materials have been widely studied because of their promising activity and abundance. However, exposing more active sites for cobalt-based electrocatalysts with enhanced activity and durability still remains as a great challenge. Herein, we demonstrate that chlorine intercalated alpha-type cobalt hydroxide can be electrochemically etched to form a highly active OER catalyst, achieving a current density of 10 mA cm(-2) at an OER overpotential of similar to 320 mV. The improvement in the OER activity can be ascribed to the dechlorination induced defective structures and in situ formation of cobalt oxyhydroxide fragments as active sites via anodic polarization. Our findings suggest a novel strategy of electrochemical etching of chlorine containing hydroxide catalysts to obtain defective oxyhydroxides for continuous electrochemical water splitting.
类目[WOS]Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
关键词[WOS]EFFICIENT WATER OXIDATION ; ALKALINE-SOLUTION ; NANOSHEET ARRAYS ; OXIDE SURFACES ; ELECTROCATALYSTS ; CATALYSTS ; SPECTROSCOPY ; NANOPARTICLES ; OXYHYDROXIDE ; ELECTRODES
语种英语
WOS记录号WOS:000378946700029
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260274
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Liu, PF,Yang, S,Zheng LR,et al. Electrochemical etching of alpha-cobalt hydroxide for improvement of oxygen evolution reaction[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(24):9578-9584.
APA Liu, PF,Yang, S,郑黎荣,Zheng, LR,Zhang, B,&Yang, HG.(2016).Electrochemical etching of alpha-cobalt hydroxide for improvement of oxygen evolution reaction.JOURNAL OF MATERIALS CHEMISTRY A,4(24),9578-9584.
MLA Liu, PF,et al."Electrochemical etching of alpha-cobalt hydroxide for improvement of oxygen evolution reaction".JOURNAL OF MATERIALS CHEMISTRY A 4.24(2016):9578-9584.
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