Self-assembled Pt–CoFe layered double hydroxides for efficient alkaline water/seawater splitting by spontaneous redox synthesis
2022-06-01
发表期刊JOURNAL OF POWER SOURCES (IF:8.1[JCR-2023],8.3[5-Year])
ISSN0378-7753
卷号532
DOI10.1016/j.jpowsour.2022.231353
摘要

The development of high-performance, low-cost and large-scale water/seawater splitting bifunctional electrocatalysts still faces huge challenges. Here, we deliver a novel and simple spontaneous redox synthesis strategy to fabricate a self-supported Pt–CoFe() layered double hydroxide (LDH) electrocatalyst. The three-dimensional porous structure of the catalyst and the synergistic effect of Pt clusters and CoFe hydroxides jointly contribute to its excellent catalytic activity and enhanced chemical stability. Specifically, in 1 M KOH, the overpotentials for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) of Pt–CoFe() LDH at 10 mA cm−2 are 214 mV and 15 mV, respectively. The catalysts are stable for at least 40 h at high current densities of 100 and 500 mA cm−2. Compared with previously reported electrocatalysts, Pt–CoFe(II) LDHs || Pt–CoFe(II) LDHs overall water (seawater) electrolyzers only require 1.634 (1.651) and 1.798 (1.858) V to reach 100 and 500 mA cm−2 in 1 M KOH water (seawater) electrolyte, confirming the superior catalytic activity of the self-supported Pt–CoFe() layered double hydroxide electrocatalysts. This study provides a novel and simple synthesis strategy to prepare advanced water/seawater splitting electrocatalysts, which is highly relevant for commercial applications. 

关键词Alkalinity Binary alloys Catalyst activity Chemical stability Cobalt alloys Electrocatalysts Electrolysis Electrolytes Iron compounds Platinum compounds Potassium hydroxide Seawater Bifunctional electrocatalysts Layered-double hydroxides Overall water/seawater splitting Redox synthesis Self-supported bifunctional electrocatalyst Simple++ Splittings Spontaneous redox synthesis Supported Pt Synthesis strategy
收录类别SCI ; SCIE ; EI
语种英语
资助项目Shanghai Key Research Program[20ZR1436700]
WOS研究方向Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号WOS:000793522400004
出版者Elsevier B.V.
EI入藏号20221511940252
EI主题词Iron alloys
EI分类号471.4 Seawater, Tides and Waves ; 545.2 Iron Alloys ; 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 702 Electric Batteries and Fuel Cells ; 801 Chemistry ; 801.1 Chemistry, General ; 801.4.1 Electrochemistry ; 802.2 Chemical Reactions ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds
原始文献类型Journal article (JA)
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文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/171492
专题物质科学与技术学院_硕士生
物质科学与技术学院_PI研究组_杨楠组
物质科学与技术学院_PI研究组_于奕组
物质科学与技术学院_博士生
通讯作者Yang, Nan
作者单位
School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China
第一作者单位物质科学与技术学院
通讯作者单位物质科学与技术学院
第一作者的第一单位物质科学与技术学院
推荐引用方式
GB/T 7714
Wu, Jin,Nie, Zhiwei,Xie, Renjie,et al. Self-assembled Pt–CoFe layered double hydroxides for efficient alkaline water/seawater splitting by spontaneous redox synthesis[J]. JOURNAL OF POWER SOURCES,2022,532.
APA Wu, Jin,Nie, Zhiwei,Xie, Renjie,Hu, Xiangchen,Yu, Yi,&Yang, Nan.(2022).Self-assembled Pt–CoFe layered double hydroxides for efficient alkaline water/seawater splitting by spontaneous redox synthesis.JOURNAL OF POWER SOURCES,532.
MLA Wu, Jin,et al."Self-assembled Pt–CoFe layered double hydroxides for efficient alkaline water/seawater splitting by spontaneous redox synthesis".JOURNAL OF POWER SOURCES 532(2022).
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