کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1287479 | 1497988 | 2013 | 6 صفحه PDF | دانلود رایگان |
We constructed a Li3V2(PO4)3/Li1.5Al0.5Ge1.5(PO4)3/Li3V2(PO4)3 symmetric all solid-state Li-ion battery. Since the rechargeable capacity of Li3+xV2(PO4)3 anode is lower than that of Li3−xV2(PO4)3 cathode, the symmetric cell capacity is restricted by the anode capacity. So, the improvement of Li3+xV2(PO4)3 anode properties was tried using mechanical milling to uniformly mix Li3V2(PO4)3 and carbon. The charge and discharge capacity of Li3V2(PO4)3/C using mechanical milling was greatly increased compared to Li3V2(PO4)3/C using hand milling. The structure change with the insertion and extraction of lithium confirmed using ex-situ XRD measurements. The Li extraction/insertion of Li3V2(PO4)3 with a NASICON structure can proceed to the reversible expansion/contraction of the lattice due to the structural strength and flexibility of NASICON framework with the corner-sharing matrix. The discharge capacity of the all solid-state battery per Li3V2(PO4)3 in cathode weight achieved 92 mAh g−1 by good dispersion state of Li3V2(PO4)3 and carbon using mechanical milling.
► Li3V2(PO4)3/Li1.5Al0.5Ge1.5(PO4)3/Li3V2 (PO4) 3 all solid-state Li-ion battery was made.
► The key concept to reduce the contact resistivity is common NASICON structure.
► The capacity per cathode weight for the all-solid-state battery achieved 92 mAh g−1 even at RT.
Journal: Journal of Power Sources - Volume 244, 15 December 2013, Pages 312–317