采用球磨微波法合成锂离子电池正极材料Li3V2(PO4)3/C,并研究了微波辐射时间对样品电化学性能的影响. 结果表明,640 W微波辐射18 min合成的材料,其结晶度高、粒径小而均匀. 该电极5C倍率下首次放电比容量达101.3 mAh?g-1,300周期循环,其放电比容量仍保持100.8 mAh?g-1,展示出良好的应用前景.
唐致远
,
毛文峰
,
闫继
,
袁威
,
张新河
. 球磨微波法制备Li3V2(PO4)3/C及其电化学性能表征[J]. 电化学, 2012
, 18(4)
: 318
-321
.
DOI: 10.61558/2993-074X.2924
The cathode materials of Li3V2(PO4)3/C were successfully synthesized by ball-milling assisted microwave method and the microwave irradiation time was also optimized. It is found that the Li3V2(PO4)3/C material obtained at a microwave power of 640 W for 18 min showed the best electrochemical performance with the initial reversible capacity of 101.3 mAh.g-1 and the remained 100.8 mAh.g-1 at 5C rate after 300 cycles. This excellent electrochemical capability may be resulted from good crystallinity, smaller and uniform particle size of the material, showing a great promise for battery applications.
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