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题名: Atomic-scale topochemical preparation of crystalline Fe3+-doped beta-Ni(OH)(2) for an ultrahighrate oxygen evolution reaction
作者: Zhu, Kaiyue1, 2;  Liu, Huanying1;  Li, Mingrun1;  Li, Xuning2, 3, 4;  Wang, Junhu2, 3, 4;  Zhu, Xuefeng1;  Yang, Weishen1
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2017-05-07
DOI: 10.1039/c7ta01408b
卷: 5, 期:17, 页:7753-7758
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Energy & Fuels ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Materials Science
英文摘要: The development of highly efficient and affordable electrocatalysts for the sluggish oxygen evolution reaction (OER) has been considered as a great challenge to the practical applications for water splitting and in rechargeable metal-air batteries. Herein, we report active and robust OER catalysts of Fe3+-doped beta-Ni(OH)(2) prepared via an atomic-scale topochemical transformation route. Based on the premise that all Fe3+ is incorporated into the beta-Ni(OH)(2) lattice, the OER activity increases directly with the content of Fe3+. The Fe(0.5)-doped beta-Ni(OH)(2) catalyst affords a current density of 10 mA cm(-2) at an overpotential as low as 0.26 V and a small Tafel slope of 32 mv dec(-1). Comparing the state-of-the-art IrO2 catalyst, the Fe(0.5)-doped beta-Ni(OH)(2) catalyst exhibits higher activity and stability from galvanostatic tests at 10 mA cm(-2). Additionally, we experimentally demonstrate that Fe(0.5)-doped beta-Ni(OH)(2) exerts higher OER activity than Fe(0.5)-doped alpha-Ni(OH)(2). All evidence indicates that Fe and the beta-Ni(OH)(2) matrix play an important role in NiFe-based catalysts.
关键词[WOS]: LAYERED DOUBLE HYDROXIDE ;  WATER OXIDATION ;  MOSSBAUER-SPECTROSCOPY ;  PHASE-TRANSFORMATION ;  NICKEL HYDROXIDES ;  AIR BATTERIES ;  NIFE ;  ELECTROCATALYSTS ;  FILM ;  EFFICIENT
语种: 英语
WOS记录号: WOS:000400553700009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151983
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.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Catalysts & New Mat Aerosp, Dalian 116023, Peoples R China

Recommended Citation:
Zhu, Kaiyue,Liu, Huanying,Li, Mingrun,et al. Atomic-scale topochemical preparation of crystalline Fe3+-doped beta-Ni(OH)(2) for an ultrahighrate oxygen evolution reaction[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(17):7753-7758.
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