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Boron‐ and Iron‐Incorporated α‐Co(OH) 2 Ultrathin Nanosheets as an Efficient Oxygen Evolution Catalyst
Author(s) -
Liu Yunhua,
Jin Zhaoyu,
Li Panpan,
Tian Xianqing,
Chen Xiaojuan,
Xiao Dan
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201701226
Subject(s) - overpotential , tafel equation , oxygen evolution , boron , catalysis , electrocatalyst , inorganic chemistry , ethylene glycol , materials science , electrochemistry , water splitting , chemical engineering , chemistry , electrode , organic chemistry , photocatalysis , engineering
Electrochemical water splitting is a critical technology for various energy storage and conversion devices, but it is greatly restricted by the sluggish kinetics of the oxygen evolution reaction (OER). Herein, an effective electrocatalyst of boron‐ and iron‐incorporated α‐Co(OH) 2 (B‐α‐Co 5.8 Fe LDH)ultrathin nanosheets was synthesized for the OER by using sodium tetraphenylborate (NaTPB) as a mild alkali and boron source in ethylene glycol/water system (EG‐W). Benefiting from the large accessible surface area (563 m 2 g −1 ) and the synergistic effect of Co−Fe−B,the catalyst (B‐α‐Co 5.8 Fe LDH) exhibits improved activity and stability in 1 M KOH solution with a low overpotential (264 mV at 10 mA cm −2 ) and Tafel slope (34 mV dec −1 ). In addition, this method was also applied to fabricate boron‐ and iron‐incorporated α‐Ni(OH) 2 . This study should inspire a new pathway to design highly efficient OER catalysts.