A novel quinone-based polymer electrode for high performance lithium-ion batteries

作者：Xie Jian; Wang Zilong; Gu Peiyang; Zhao Yi; Xu Zhichuan J; Zhang Qichun

来源：Science China-Materials, 2016, 59(1): 6-11.

DOI：10.1007/s40843-016-0112-3

• lithium battery
• electrode
• polymer
• carbonyl
• thioether

Designing of high electrochemical performance organic electrode materials has attracted tremendous attention. Recent investigations revealed that quinone-based polymers along with the stable thioether bonds could achieve a high specific capacity and a good cycling stability simultaneously. In this study, we synthesized a novel ladder-structured polymer poly(2,3-dithiino-1,4- benzoquinone) (PDB) through a simple two-step polymerization. The electrochemical performance indicated that PDB could achieve a high reversible specific capacity of 681 mAh g(-1) with 98.4% capacity retention after 100 cycles. A good rate performance was also achieved with a fast recovery of the capacity after testing at different current densities. Ultra-long cycling performance of PDB was also investigated. The promising results of PDB provided us more confidence to continue searching for high performance polymers through the modification of organic structures.

• 出版日期2016-1