Enhanced Lithium Ion Transport by Superionic Pathways Formed on the Surface of Two-dimensional Structured Li0.85Na0.15V3O8 for High-Performance Lithium Ion Batteries
作者： Xuena Lu , Yu Shang , Sen Zhang , Chao Deng
DOI: 10.1016/J.ELECTACTA.2014.12.119
关键词:
摘要: Abstract Poor ion transport and rate capability are the main challenges for LiV3O8 as cathode material lithium batteries. Here we report a novel strategy enhancing by building superionic pathways on surface of Li0.85Na0.15V3O8 nanosheet. The two-dimensional nanoparticle with an conductive layer LixV2O5 its is constructed modified sol–gel carefully controlled sodium incorporation elements stoichiometry. Ultrathin not only provides facile migration, but also increases structure stability during cycling. LixV2O5-Li0.85Na0.15V3O8 composite displays good high 172.3 mAh g−1 at 5C excellent cycling 98.9% over fifty cycles. This superior electrochemical property attributed to occupation site Na+ in host crystals phase. Therefore, advantages both stabilization present study put forward new achieving high-performance electrode tailored nanoarchitecture.
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