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Insights on the mechanism of Na-ion storage in expanded graphite anode
Li,Xiaodan1; Liu,Zhibin1; Li,Jinliang1; Lei,Hang1,3; Zhuo,Wenchen1,3; Qin,Wei4; Cai,Xiang5; Hui,Kwun Nam6; Pan,Likun2; Mai,Wenjie1
Source PublicationJournal of Energy Chemistry

Currently, Na-ion battery (NIB) has become one of the most potential alternatives for Li-ion batteries due to the safety and low cost. As a promising anode for Na-ion storage, expanded graphite has attracted considerable attention. However, the sodiation-desodiation process is still unclear. In our work, we obtain expanded graphite through slight modified Hummer’s method and subsequent thermal treatment, which exhibits excellent cycling stability. Even at a high current density of 1 A g−1, our expanded graphite still remains a high reversible capacity of 100 mA h g−1 after 2600 cycles. Furthermore, we also investigate the electrochemical mechanism of our expanded graphite for Na-ion storage by operando Raman technique, which illuminate the electrochemical reaction during different sodiation-desodiation processes.

KeywordExpanded Graphite Na-ion Batteries Operando Raman Spectroscopies Sodiation-desodiation Process
URLView the original
Indexed BySCIE
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000600825100007
Scopus ID2-s2.0-85085475124
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Cited Times [WOS]:8   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorLi,Jinliang; Mai,Wenjie
Affiliation1.Siyuan Laboratory,Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials,Department of Physics,Jinan University,Guangzhou,510632,China
2.Shanghai Key Laboratory of Magnetic Resonance,School of Physics and Electronic Science,East China Normal University,Shanghai,200062,China
3.Department of Chemistry,Jinan University,Guangzhou,510632,China
4.College of Materials Science and Engineering,Changsha University of Science and Technology,Changsha,410114,China
5.Department of Light Chemical Engineering,Guangdong Polytechnic,Foshan,528041,China
6.Institute of Applied Physics and Materials Engineering,University of Macau,Avenida da Universidade,Macau,Taipa,999078,China
Recommended Citation
GB/T 7714
Li,Xiaodan,Liu,Zhibin,Li,Jinliang,et al. Insights on the mechanism of Na-ion storage in expanded graphite anode[J]. Journal of Energy Chemistry,2021,53:56-62.
APA Li,Xiaodan,Liu,Zhibin,Li,Jinliang,Lei,Hang,Zhuo,Wenchen,Qin,Wei,Cai,Xiang,Hui,Kwun Nam,Pan,Likun,&Mai,Wenjie.(2021).Insights on the mechanism of Na-ion storage in expanded graphite anode.Journal of Energy Chemistry,53,56-62.
MLA Li,Xiaodan,et al."Insights on the mechanism of Na-ion storage in expanded graphite anode".Journal of Energy Chemistry 53(2021):56-62.
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