Advanced rechargeable lithium-ion batteries based on bendable ZnCo2O4-urchins-on-carbon-fibers electrodes
Advanced rechargeable lithium-ion batteries based on bendable ZnCo2O4-urchins-on-carbon-fibers electrodes
复制标题
基于可弯曲 ZnCo2O4-海胆碳纤维电极的先进可充电锂离子电池
DOI：
10.1007/s12274-013-0329-3
复制
发表时间：
2013-07-01
期刊：
影响因子：
9.9
通讯作者：
Shen, Guozhen
中科院分区：
文献类型：
--
作者：
Liu, Bin;Wang, Xianfu;Shen, Guozhen
设计了一类新型的ZnCo 2 O 4-海胆碳纤维基质，其特征在于，并用于制造高性能的能量存储器件。我们获得了1180 mA中心点h/g的可逆锂存储容量，即使在100次循环后，证明了所制备的样品的高可逆容量和优异的循环寿命。作为快速充电电池进行测试，这些电极在20 C（18 A/g）的极高倍率下表现出750 mA中心点h/g的相当大的容量，具有优异的循环寿命（长达100次循环），这是在锂可再充电电池中ZnCo 2 O 4基阳极材料在如此高的充电/放电电流密度下报道的最佳高倍率结果。这种有吸引力的性能可以归因于无粘结剂的ZnCo 2 O 4-海胆碳纤维基质的独特结构。通过将ZnCo 2 O 4阳极与商业LiCoO 2阴极相结合，还开发了全电池，其显示出灵活/耐磨和稳定的特性，可用作非常有前途的未来储能单元。
A novel class of ZnCo2O4-urchins-on-carbon-fibers matrix has been designed, characterized, and used to fabricate high-performance energy storage devices. We obtained a reversible lithium storage capacity of 1180 mA center dot h/g even after 100 cycles, demonstrating the highreversible capacity and excellent cycle life of the as-prepared samples. Tested as fast-charging batteries, these electrodes exhibited a considerable capacity of 750 mA center dot h/g at an exceptionally high rate of 20 C (18 A/g), with an excellent cycle life (as long as 100 cycles), which are the best high-rate results reported at such a high charge/discharge current density for ZnCo2O4-based anode materials in lithium rechargeable batteries. Such attractive properties may be attributed to the unique structure of the binder-free ZnCo2O4-urchins-on-carbon-fibers matrix. Full batteries were also developed by combining the ZnCo2O4 anodes with commercial LiCoO2 cathodes, which showed flexible/wearable and stable features for use as very promising future energy storage units.