Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6604753 | Electrochimica Acta | 2018 | 8 Pages |
Abstract
Li2ZnTi3O8 (LZTO) was synthesized by solid-state reaction using TiO2-anatase, Li2CO3, Zn(CH3COO)2·2H2O as raw materials. Three well-designed modified samples including LZTO-K (keqin black), LZTO-M (carbon microspheres) and LZTO-S (super-P) were prepared by extra adding carbon materials as loose and porous agent in the synthesis process without any crystal structure change. Among the all samples, LZTO-M exhibits excellent electrochemical performances in terms of high capacities (209.6, 187.2, 178.0, 161.8, 154.4 mAh gâ1 at current densities of 0.1, 0.5, 1.0, 2.0, 3.0 A gâ1, respectively) after 100 circulations and shows remarkable stable cycling performance, retaining capacity of 133.6 mAh gâ1 compared with that (82.6 mAh gâ1) of LZTO over 500 cycles at 3.0 A gâ1. The utilization of carbon microspheres not only reduces particle size of LZTO-M and makes particles well-distributed, but also promotes loose structure with uniform porous and increases the surface area.
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Authors
Tao Liu, Haoqing Tang, Jianyu Liu, Yujie Pu, Jing Zhang, Zhiwei Lu, Wei Li, Zhiyuan Tang, Fei Ding,