High-Performance Low-Temperature Li+ Intercalation in Disordered Rock-Salt Li-Cr-V Oxyfluorides

被引：33
作者：
Chen, Ruiyong [1 ,2 ,3 ]
Ren, Shuhua [2 ]
Mu, Xiaoke [2 ]
Maawad, Emad [4 ]
Zander, Stefan [5 ]
Hempelmann, Rolf [3 ]
Hahn, Horst [1 ,2 ]
机构：
[1] Helmholtz Inst Ulm, Helmholtzstr 11, D-89081 Ulm, Germany
[2] Karlsruhe Inst Technol, Inst Nanotechnol, Hermann von Helmholtz Pl 1, D-76021 Karlsruhe, Germany
[3] Univ Saarland, KIST Europe, Joint Electrochem Lab, Campus E7 1, D-66123 Saarbrucken, Germany
[4] Helmholtz Zentrum Geesthacht, Inst Mat Res, Notkestr 85, D-22607 Hamburg, Germany
[5] Helmholtz Zentrum Berlin Mat & Energie, Struct & Dynam Energy Mat, Albert Einstein Str 15, D-12489 Berlin, Germany
来源：
CHEMELECTROCHEM | 2016年 / 3卷 / 06期
关键词：
disordered rock-salt structure; intercalation cathode; lithium-ion batteries; low temperature; oxyfluorides; LITHIUM-ION BATTERIES; CATHODE; ELECTROLYTES; ELECTRODES; OXIDES;
D O I：
10.1002/celc.201600033
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
At -10 degrees C and 26 mAg(-1), Li2Cr0.2V0.8O2F can deliver a stable high capacity of 250 mAhg(-1) (or 690 Whkg(-1)) over 60 cycles. Even at -20 degrees C and a current density of 106 mAg(-1), it still delivers a steady capacity and specific energy of about 160 mAhg(-1) and 400 Whkg(-1), respectively, over 100 cycles. Superior performance of Li2Cr0.2V0.8O2F over Li2VO2F and Li2CrO2F is related to its structural stability and electronic properties.
引用
收藏
页码：892 / 895
页数：4
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