A low-cost attempt to improve electrochemical performances of pitch-based hard carbon anodes in lithium-ion batteries by oxidative stabilization
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- 作者：Pin-Yi Zhao ; Jia-Ji Tang ; Cheng-Yang Wang
- 关键词：Lithium ; Ion batteries ; Hard carbon ; Pitch ; Oxidative stabilization
- 刊名：Journal of Solid State Electrochemistry
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：21
- 期：2
- 页码：555-562
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Physical Chemistry; Electrochemistry; Energy Storage; Characterization and Evaluation of Materials; Analytical Chemistry; Condensed Matter Physics;
- 出版者：Springer Berlin Heidelberg
- ISSN：1433-0768
- 卷排序：21
文摘
The electrochemical performance of low-cost, pitch-based hard carbon anodes in lithium-ion batteries is reported. Pitch-based hard carbon anodes were prepared, stabilized in air at 290 °C for 1 h after different temperature programming, and then carbonized in N2 at 1000 °C. The optimal anode with temperature programming of 24 h had abundant oxygenic functional groups, a large interlayer space, and a stable morphology. When used as anodes in lithium-ion batteries after 100 cycles at a current density of 100 mA g−1, the capacity was 258.6 mAh g−1 with a capacity retention ratio of 90.6 %. This large capacity combined with the superior cycling performance indicates that prolonged oxidative stabilization is an effective strategy in improving electrochemical performances of lithium-ion batteries.