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author：

Zhang, Rongrong (Zhang, Rongrong.) [1] | Han, Yun (Han, Yun.) [2] | Wu, Qilong (Wu, Qilong.) [3] | Lu, Min (Lu, Min.) [4] | Liu, Guangsheng (Liu, Guangsheng.) [5] | Guo, Zhangtao (Guo, Zhangtao.) [6] | Zhang, Yaowen (Zhang, Yaowen.) [7] | Zeng, Jianrong (Zeng, Jianrong.) [8] | Wu, Xiaofeng (Wu, Xiaofeng.) [9] | Zhang, Dongdong (Zhang, Dongdong.) [10] | Wu, Liyun (Wu, Liyun.) [11] | Song, Nan (Song, Nan.) [12] | Yuan, Pei (Yuan, Pei.) [13] | Du, Aijun (Du, Aijun.) [14] | Huang, Keke (Huang, Keke.) [15] | Chen, Jun (Chen, Jun.) [16] | Yao, Xiangdong (Yao, Xiangdong.) [17]

Indexed by：

EI

Abstract：

Optimizing　the　local　electronic　structure　of　electrocatalysts　can　effectively　lower　the　energy　barrier　of　electrochemical　reactions,　thus　enhancing　the　electrocatalytic　activity.　However,　the　intrinsic　contribution　of　the　electronic　effect　is　still　experimentally　unclear.　In　this　work,　the　electron　injection-incomplete　discharge　approach　to　achieve　the　electron　accumulation　(EA)　degree　on　the　nickel-iron　layered　double　hydroxide　(NiFe　LDH)　is　proposed,　to　reveal　the　intrinsic　contribution　of　EA　toward　oxygen　evolution　reaction　(OER).　Such　NiFe　LDH　with　EA　effect　results　in　only　262 mV　overpotential　to　reach　50　mA cm−2,　which　is　51 mV-lower　compared　with　pristine　NiFe　LDH　(313 mV),　and　reduced　Tafel　slope　of　54.8 mV dec−1　than　NiFe　LDH　(107.5 mV dec−1).　Spectroscopy　characterizations　combined　with　theoretical　calculations　confirm　that　the　EA　near　concomitant　Vo　can　induce　a　narrower　energy　gap　and　lower　thermodynamic　barrier　to　enhance　OER　performance.　This　study　clarifies　the　mechanism　of　the　EA　effect　on　OER　activity,　providing　a　direct　electronic　structure　modulation　guideline　for　effective　electrocatalyst　design.　©　2024　Wiley-VCH　GmbH.

Keyword：

Electrocatalysts Electronic structure Electron injection Electrons Iron alloys Iron compounds Nickel compounds Oxygen vacancies

Community：

  • [ 1 ] [Zhang, Rongrong]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun; 130012, China
  • [ 2 ] [Han, Yun]Queensland Micro- and Nanotechnology Centre, School of Engineering and Built Environment, Griffith University, Nathan Campus, Nathan; QLD; 4111, Australia
  • [ 3 ] [Wu, Qilong]IPRI, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, North Wollongong; NSW; 2500, Australia
  • [ 4 ] [Lu, Min]State Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou; 730000, China
  • [ 5 ] [Liu, Guangsheng]Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh; PA; 15282, United States
  • [ 6 ] [Guo, Zhangtao]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun; 130012, China
  • [ 7 ] [Zhang, Yaowen]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun; 130012, China
  • [ 8 ] [Zeng, Jianrong]Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai; 201204, China
  • [ 9 ] [Wu, Xiaofeng]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun; 130012, China
  • [ 10 ] [Zhang, Dongdong]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun; 130012, China
  • [ 11 ] [Wu, Liyun]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun; 130012, China
  • [ 12 ] [Song, Nan]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun; 130012, China
  • [ 13 ] [Yuan, Pei]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350002, China
  • [ 14 ] [Du, Aijun]School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology Gardens Point Campus, Brisbane; 4001, Australia
  • [ 15 ] [Huang, Keke]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun; 130012, China
  • [ 16 ] [Chen, Jun]IPRI, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, North Wollongong; NSW; 2500, Australia
  • [ 17 ] [Yao, Xiangdong]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun; 130012, China
  • [ 18 ] [Yao, Xiangdong]School of Advanced Energy and IGCME, Shenzhen Campus, Sun Yat-Sen University (SYSU), Guangdong, Shenzhen; 518100, China
  • [ 19 ] [Yao, Xiangdong]Chemistry and Chemical Engineering Guangdong Laboratory, Shantou; 515063, China

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Small

ISSN： 1613-6810

Year： 2024

Issue： 34

Volume： 20

1 3 . 0 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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