B₂O₃/LiBO₂ dual-modification layer stabilized Ni-rich cathode for lithium-ion battery

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dc.contributor.authorLv, Y.
dc.contributor.authorHuang, S.
dc.contributor.authorLu, S.
dc.contributor.authorDing, W.
dc.contributor.authorYu, X.
dc.contributor.authorLiang, G.
dc.contributor.authorZou, J.
dc.contributor.authorKang, F.
dc.contributor.authorZhang, J.
dc.contributor.authorCao, Y.
dc.date.issued2022
dc.description.abstractNi-rich layered oxide material with high theoretical capacity and low cost is one of the most promising cathode candidates for high-energy-density lithium-ion battery. However, increase of Ni content triggers structural instability and fast capacity degradation, which severely impedes the practical application of Ni-rich materials. Here, a surface dual-modification layer of B₂O₃ & LiBO₂ is introduced to Ni-rich material LiNi₀.₈₉Co₀.₀₈Mn₀.₀₃O₂ (NCM89), which successfully stabilizes the layered structure of NCM89 during cycling as well as removes residual lithium in NCM89. The in-situ X-ray diffraction and cross-sectional scanning electron microscopy results demonstrate effectively improved structural reversibility and stability of the cathode. Moreover, the dissolution of transition metals and decomposition of electrolyte at the cathode/electrolyte interface are successfully suppressed, resulting in beneficial cathode electrolyte interphase (CEI) layer. As a result, the boron modified cathode exhibits s a high capacity of 180.4mAh g‾¹ along with an excellent capacity retention of 90% after 100 cycles at 1C in 2.75–4.35 V at 25 °C, while the pristine NCM89 cathode only retains 59% of its initial capacity after 100 cycles. Furthermore, the capacity retention of full cell after 350 cycles is improved from 52.5% to 90%.
dc.description.statementofresponsibilityYao Lv, Shifei Huang, Sirong Lu, Wenbo Ding, Xiaoliang Yu, Gemeng Liang, Jinshuo Zou, Feiyu Kang, Jiujun Zhang, Yidan Cao
dc.identifier.citationJournal of Power Sources, 2022; 536:231510-1-231510-9
dc.identifier.doi10.1016/j.jpowsour.2022.231510
dc.identifier.issn0378-7753
dc.identifier.issn1873-2755
dc.identifier.orcidLiang, G. [0000-0002-2302-4932]
dc.identifier.urihttps://hdl.handle.net/2440/146156
dc.language.isoen
dc.publisherElsevier BV
dc.rights© 2022 Elsevier B.V. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.jpowsour.2022.231510
dc.subjectNi-rich layered oxide; Interfacial stability; Capacity degradation; Dual-modification layer; Boron; Structural stability
dc.titleB₂O₃/LiBO₂ dual-modification layer stabilized Ni-rich cathode for lithium-ion battery
dc.title.alternativeB<inf>2</inf>O<inf>3</inf>/LiBO<inf>2</inf> dual-modification layer stabilized Ni-rich cathode for lithium-ion battery
dc.typeJournal article
pubs.publication-statusPublished

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