Dual-Sites Coordination Engineering of Single Atom Catalysts for Full-Temperature Adaptive Flexible Ultralong-Life Solid-State Zn-Air Batteries

时间:2023-05-25作者:浏览量:10


Dual-Sites Coordination Engineering of Single Atom Catalysts for Full-Temperature Adaptive Flexible Ultralong-Life Solid-State Zn-Air Batteries

作者:Gu, TT (Gu, Tengteng) [1] , [2] ; Zhang, DT (Zhang, Dantong) [3] ; Yang, Y (Yang, Yan) [1] , [2] ; Peng, C (Peng, Chao) [3] ; Xue, DF (Xue, Dongfeng) [3] ; Zhi, CY (Zhi, Chunyi) [4] ; Zhu, M (Zhu, Min) [1] , [2] ; Liu, J (Liu, Jun) [1] , [2]

 (由 Clarivate 提供) 

卷33

期8

DOI10.1002/adfm.202212299

出版时间FEB 2023

在线发表DEC 2022

已索引2022-12-27

文献类型Article

摘要

High-performance rechargeable Zn-air batteries with long-life stability are desirable for power applications in electric vehicles. The key component of the Zn-air batteries is the bifunctional oxygen electrocatalyst, however, designing a bifunctional oxygen electrocatalyst with high intrinsic reversibility and durability is a challenge. Through density functional theory calculations, it is found that the catalytic activity originated from the electronic and geometric coordination structures synergistic effect of the Fe and Co dual-sites with metal-N-4 coordination environment, assisting the stronger hybridization of electronic orbitals between Co (dxz, dz(2)) and OO* (px, pz), thus making the stronger O-2 active ability of Co active site. These findings enable to development of a fancy dual single-atom catalyst comprising adjacent Fe-N-4 and Co-N-4 sites on N-doped carbon matrix (FeCo-NC). FeCo-NC exhibits extraordinary bifunctional activities for oxygen reduction and evolution reaction (ORR/OER), which displays high half-wave potential (0.893 V) for the ORR, and low overpotential (343 mV) at 10 mA cm(-2) for the OER. The assembled FeCo-NC air-electrode works well in the flexible solid-state Zn-air battery with a high specific capacity of 747.0 mAh g(-1), a long-time stability of more than 400 h (30 degrees C), and also a superior performance at extreme temperatures (-30 degrees C-60 degrees C).


关键词

作者关键词coordination engineeringdual single-atom catalystsflexible Zn-air batteryfull-temperature rangeoxygen evolution reactionoxygen reduction reaction

作者信息

通讯作者地址

Liu, Jun

(通讯作者)

South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China

通讯作者地址

Liu, Jun

(通讯作者)

South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China

所属机构

South China University of Technology

通讯作者地址

Zhi, Chunyi

(通讯作者)

City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, 83 Tat Chee Ave, Hong Kong 999077, Peoples R China

地址

1 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China

2 South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China

3 Chinese Acad Sci, Inst Adv Mat Sci & Engn, Shenzhen Inst Adv Technol, Multiscale Crystal Mat Res Ctr, Shenzhen 518055, Peoples R China

4 City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, 83 Tat Chee Ave, Hong Kong 999077, Peoples R China

电子邮件地址cy.zhi@cityu.edu.hkmsjliu@scut.edu.cn

类别/分类

研究方向ChemistryScience & Technology - Other TopicsMaterials SciencePhysics

引文主题

2 Chemistry

2.62 Electrochemistry

2.62.76 Oxygen Reduction Reaction

Sustainable Development Goals

07 Affordable and Clean Energy

Web of Science 类别Chemistry, MultidisciplinaryChemistry, PhysicalNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedPhysics, Condensed Matter