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Ru single atoms induce surface-mediated discharge in Na-O(2 )batteries
Jin, Xin1; Li, Yangyang1; Zhang, Shuo1; Zhang, Jiangwei2,3; Shen, Zihan1; Zhong, Chenlin1; Cai, Ziqiang1; Hu, Chaoquan4,5; Zhang, Huigang1,4
2022
Source PublicationCHINESE CHEMICAL LETTERS
ISSN1001-8417
Volume33Issue:1Pages:491-496
AbstractSodium (Na) O-2 batteries have high energy density and low cost. However, high polarization, complex discharge products, and low Coulombic efficiency (CE) lead to poor cyclability. Here, we proposed an atomically dispersed Ru catalyst on nitrogen-doped graphene for Na-O-2 batteries. The catalysts enable the discharge to proceed via a surface-mediated route, which leads to uniform deposition of Na2-xO2 and low polarization during recharge. The first-principle calculation revealed that Ru-N-4 complex in the catalyst has strong chemical adsorption to intermediate superoxides, facilitating uniform deposition and enhancing rapid kinetics. In contrast, Ru nanoparticles, despite the catalytic activity, induce bulk deposition via a solution-mediated route because the exposed graphene surface shows weak interaction to superoxides, thereby lowering CEs and cyclability. In brief, the atomically-dispersed Ru catalyst endows Na-O-2 batteries with excellent electrochemical properties via a surface-mediated discharge. (C) 2021 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
KeywordNa-O-2 batteries Ru single atoms Surface-mediated mechanism Adsorption energy Co-deposition
DOI10.1016/j.cclet.2021.06.090
Language英语
WOS KeywordSODIUM SUPEROXIDE ; HIGHLY EFFICIENT ; BATTERIES ; METAL ; NAO2 ; REDUCTION ; CHEMISTRY ; TRANSPORT ; CATHODES ; GROWTH
Funding ProjectNational Natural Science Foundation of China[22075131] ; National Natural Science Foundation of China[21776121] ; National Key R&D Program of China[2020YFA0406104]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Program of China
WOS IDWOS:000746501400079
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/51815
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Huigang
Affiliation1.Nanjing Univ, Coll Engn & Appl Sci, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
5.Nanjing IPE Inst Green Mfg Ind, Nanjing 211100, Peoples R China
Recommended Citation
GB/T 7714
Jin, Xin,Li, Yangyang,Zhang, Shuo,et al. Ru single atoms induce surface-mediated discharge in Na-O(2 )batteries[J]. CHINESE CHEMICAL LETTERS,2022,33(1):491-496.
APA Jin, Xin.,Li, Yangyang.,Zhang, Shuo.,Zhang, Jiangwei.,Shen, Zihan.,...&Zhang, Huigang.(2022).Ru single atoms induce surface-mediated discharge in Na-O(2 )batteries.CHINESE CHEMICAL LETTERS,33(1),491-496.
MLA Jin, Xin,et al."Ru single atoms induce surface-mediated discharge in Na-O(2 )batteries".CHINESE CHEMICAL LETTERS 33.1(2022):491-496.
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