Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7736966 | Journal of Power Sources | 2014 | 9 Pages |
Abstract
The commercialized LIBs employing graphite as anodes currently suffer a series of problems from the safety, theoretical capacity (372 mAh gâ1) and rate capability. Herein, self-assembly mesoporous Zn ferrite (ZnFe2O4) microsphere embedded into carbon network has been synthesized by a facile method in the presence of citric acid. The Zn ferrites as an anode material with novel structure demonstrate superior electrochemical performance, with enhanced specific reversible capacity (â¼1100 mAh gâ1 at the specific current of 0.05 A gâ1 after 100 cycles), excellent rate capability (more than 500 mAh gâ1 even at the specific current of 1.1 A gâ1) and good cycleability with little fading (â¼97.6% after 100 cycles). The excellent cycling performance is associated with the loose Zn ferrite microsphere with numerous mesopores embedded into the carbon network, which can accommodate the severe mechanism strains and provides good electrical contact and conductivity. The superior electrochemical performance may facilitate ZnFe2O4 to be a promising alternative anode in lithium ion battery.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Lingmin Yao, Xianhua Hou, Shejun Hu, Jie Wang, Min Li, Chao Su, Moses O. Tade, Zongping Shao, Xiang Liu,