Abstract
By selecting LiOH·H_(2)O and Mn(CH_(3)COO)_(2)2H_(2)O as starting-materials,the positive materials with the structure characterization of Li_(4)Mn_(5)O_(12)and composition of Li_(3.22)Na_(0.569)Mn_(5.78)O_(12.0)were prepared by two-phase sintering method consisted of microwave and solid-state sintering processes.XRD patterns data showed that a pure Li_(4)Mn_(5)O_(12)phase was obtained by the fore-treatment of microwave sintering and the post-treatment of the solid-state sintering at 380℃.The charge-discharge tests showed that the newly prepared sample exhibited an initial capacity of 132 mAh·g~(-1)and its capacity faded after 100 cycles was 6.8% lower as compared with 1st cycle capacity in the voltage range of 4.5 to 2.5 V.The sample stored for 4 months exhibited an initial capacity of 122 mAh·g~(-1)and its capacity faded after 100 cycles was 17.4% lower than its 1st cycle capacity in the same voltage range.The Mn-O bond of the sample strengthened by microwave sintering process.
Keywords
Li_(4)Mn_(5)O_(12), Microwave, Rechargeability
Publication Date
2005-11-28
Online Available Date
2005-11-28
Revised Date
2005-11-28
Received Date
2005-11-28
Recommended Citation
Qing-song TONG.
Electrochemical Performance of Li_(3.22)Na_(0.569)Mn_(5.78)O_(12.0)[J]. Journal of Electrochemistry,
2005
,
11(4): 435-439.
DOI: 10.61558/2993-074X.1683
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol11/iss4/16
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