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题名: Layered Fe-Substituted LiNiO2 Electrocatalysts for High-Efficiency Oxygen Evolution Reaction
作者: Zhu, Kaiyue1, 2;  Wu, Tao3;  Zhu, Yue1, 2;  Li, Xuning2, 4, 5;  Li, Mingrun1;  Lu, Ruifeng3;  Wang, Junhu4, 5;  Zhu, Xuefeng1;  Yang, Weishen1
刊名: ACS ENERGY LETTERS
发表日期: 2017-07-01
DOI: 10.1021/acsenergylett.7b00434
卷: 2, 期:7, 页:1654-1660
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: LiNi1-xFexO2 (0 <= x <= 0.3) and LiyNi0.8Fe0.2O2 (0.8 <= y <= 1.2) catalysts for the oxygen evolution reaction (OER) were systematically investigated to discover the influence of the composition and layered structure on electrochemical activity. LiNi0.8Fe0.2O2 exhibits OER activity that is better than that of LiNiO2 and other Fe substituted LiNiO2 catalysts, while Li1.2Ni0.8Fe0.2O2 shows OER activity that is much higher than that of LiNi0.8Fe0.2O2 and Li0.8Ni0.8Fe0.2O2 . The best OER activity is achieved on Li1.2Ni0.8Fe0.2O2 with a Tafel slope of 59 mV dec(-1) and a current density of 10 mA cm(-2) at an overpotential of 302 mV, better than that for the benchmark IrO2 catalyst. Combined with the density functional theory calculations, the enhanced OER activity is mainly attributed to the unique electronic structure derived from the interaction of Li, Ni, and Fe in the materials and the layered structure which plays an important role in stabilizing the high valence states of Ni and Fe during the OER.
关键词[WOS]: RAY-ABSORPTION SPECTROSCOPY ;  ELECTROCHEMICAL-BEHAVIOR ;  WATER OXIDATION ;  ELECTRONIC-STRUCTURE ;  LITHIUM NICKELATE ;  CATHODE MATERIAL ;  AIR BATTERIES ;  IRON ;  OXIDE ;  HYDROXIDE
语种: 英语
WOS记录号: WOS:000405979900024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152045
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China
4.Chinese Acad Sci, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
5.Chinese Acad Sci, Lab Catalysts & New Mat Aerosp, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Zhu, Kaiyue,Wu, Tao,Zhu, Yue,et al. Layered Fe-Substituted LiNiO2 Electrocatalysts for High-Efficiency Oxygen Evolution Reaction[J]. ACS ENERGY LETTERS,2017,2(7):1654-1660.
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