Co‐Induced Electronic Optimization of Hierarchical NiFe LDH for Oxygen Evolution
學年 109
學期 1
出版（發表）日期 2020-08-20
作品名稱 Co‐Induced Electronic Optimization of Hierarchical NiFe LDH for Oxygen Evolution
作品名稱（其他語言）
著者 Yanping Lin; Hao Wang; Chun-Kuo Peng; Liangmin Bu; Chao-Lung Chiang; Kai Tian; Yue Zhao; Jianqing Zhao; Yan-Gu Lin; Jong-Min Lee; Lijun Gao
單位
出版者
著錄名稱、卷期、頁數 Small 16(38), p.2002426
摘要 Developing efficient and stable non-noble electrocatalysts for the oxygen evolution reaction (OER) remains challenging for practical applications. While nickel–iron layered double hydroxides (NiFe-LDH) are emerging as prominent candidates with promising OER activity, their catalytic performance is still restricted by the limited active sites, poor conductivity and durability. Herein, hierarchical nickel–iron–cobalt LDH nanosheets/carbon fibers (NiFeCo-LDH/CF) are synthesized through solvent-thermal treatment of ZIF-67/CF. Extended X-ray adsorption fine structure analyses reveal that the Co substitution can stabilize the Fe local coordination environment and facilitate the π-symmetry bonding orbital in NiFeCo-LDH/CF, thus modifying the electronic structures. Coupling with the structural advantages, including the largely exposed active surface sites and facilitated charge transfer pathway ensured by CF, the resultant NiFeCo-LDH/CF exhibits excellent OER activity with an overpotential of 249 mV at 10 mA cm−1 as well as robust stability over 20 h.
關鍵字 electrocatalysis; electronic structure; layered double hydroxide; oxygen evolution reaction; ZIF-67
語言 en
ISSN 1613-6810; 1613-6829
期刊性質 國外
收錄於 SCI SSCI Scopus
產學合作
通訊作者 Jianqing Zhao, Jong‐Min Lee & Lijun Gao
審稿制度 是
國別 DEU
公開徵稿
出版型式 ,電子版
SDGS 夥伴關係,可負擔的潔淨能源,產業創新與基礎設施