首页|Rational manipulation of electrolyte to induce homogeneous SEI on hard carbon anode for sodium-ion battery

Rational manipulation of electrolyte to induce homogeneous SEI on hard carbon anode for sodium-ion battery

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Sodium-ion batteries(SIBs)have great potential to be the next major energy storage devices due to their obvious advantages and developing advanced electrodes and electrolytes is urgently necessary to pro-mote its future industrialization.However,hard carbon as a state-of-the-art anode of SIBs still suffers from the low initial Coulomb efficiency and unsatisfactory rate capability,which could be improved by forming desirable solid electrolyte interphases(SEI)to some extent.Indeed,the chemistry and morphol-ogy of these interfacial layers are fundamental parameters affecting the overall battery operation,and optimizing the electrolyte to dictate the quality of SEI on hard carbon is a key strategy.Hence,this review summarizes the recent research on SEI design by electrolyte manipulation from solvents,salts,and addi-tives.It also presents some potential mechanisms of SEI formation in various electrolyte systems.Besides,the current advanced characterization techniques for electrolyte and SEI structure analyses have been comprehensively discussed.Lastly,current challenges and future perspectives of SEI formation on hard carbon anode for SIBs are provided from the viewpoints of its compositions,evolution processes,struc-tures,and characterization techniques,which will promote SEI efficient manipulation and improve the performance of hard carbon,and further contribute to the development of SIBs.

SEIElectrolyte optimizationHard carbonElectrochemical performanceSodium-ion batteries

Lu Liu、Lingling Xiao、Zhi Sun、Shahid Bashir、Ramesh Kasi、Yonghong Gu、Ramesh Subramaniam

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Research Center for Clean Utilization Technology Phosphorous Resources,Hubei Three Gorges Polytechnic,Yichang 443000,Hubei,China

Department of Physics,Faculty of Science,Universiti Malaya,Kuala Lumpur 50603,Malaysia

UM Power Energy Dedicated Advanced Centre(UMPEDAC),Level 4,Wisma R&D,Universiti Malaya,Kuala Lumpur 59990,Malaysia

Department of Chemistry,Saveetha School of Engineering,Institute of Medical and Technical Science,Saveetha University,Chennai 602105,Tamilnadu,India

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Ministry of Higher Education through the Fundamental Research Grant SchemeRamesh T SubramaniamTechnology Development Fund 1(TeD1)from the Ministry of Science,Technology,and Innovation(MOSTI),MalaysiaKey Research Program of Yichang City

FRGS/1/2022/STG05/UM/01/2MOSTI002-2021TED12023KYPT0303

2024

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子:0.654
ISSN:2095-4956
年,卷(期):2024.94(7)