LixMn2O4 ultrathin nanosheets with faster Li+ diffusion for highly reversible Li-ions batteries
LixMn2O4 ultrathin nanosheets with faster Li+ diffusion for highly reversible Li-ions batteries
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DOI：
10.1016/j.matlet.2018.10.141
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发表时间：
2019-02
影响因子：
3
通讯作者：
Junli Zhou;Yajun Zhang;Hao Chen;Z. Liu;Yin Yang;Lin Yu
中科院分区：
文献类型：
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作者：
Junli Zhou;Yajun Zhang;Hao Chen;Z. Liu;Yin Yang;Lin Yu
In this work, spinel LixMn2O4with high crystallinity are successfully synthesized via a simple polyol-reflux process. Li0.93Mn2O4shows ultrathin nanosheets structure (4 nm in thickness) with exposed {1 1 1} facets, which can effectively restrain the Mn dissolution. The Li0.93Mn2O4(LMO-1) nanosheets delivers much larger Li+diffusion coefficient (2.50 × 10−11cm2s−1) and much higher discharge capacity (124.6 mAh g−1at 0.1 C) than that of commercial particles (104.1 mAh g−1, 2.97 × 10−12cm2s−1) and makes the discharge capacity approaching the theoretical capacity (138.24 mAh g−1). Moreover, the obtained Li0.93Mn2O4nanosheets have high initial coulombic efficiency (99.6%) and 92% capacity retentions up to 100 cycles, indicating high reversible performance.
