低温下菲醌正极材料在钠离子电池中的电化学及动力学性能研究  

Electrochemical and Kinetic Properties of Phenanthraquinone Cathode Material in Sodium-ion Batteries at Low Temperatures

作　　者：陈强 彭成信 CHEN Qiang;PENG Chengxin(University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学,上海200093

出　　处：《广州化学》2024年第5期55-59,共5页Guangzhou Chemistry

摘　　要：以菲醌(PQ)作为钠离子电池的有机正极材料,探究了其相关常温与低温电化学性能以及动力学性能。结果表明,钠离子电极在100 m A/g电流密度下展现出124 m Ah/g的高比容量,同时表现其出色的倍率性能,即使在5 A/g的大电流下充放电2000圈后,其容量保持率为96%,体现出良好的循环稳定性。通过研究其低温下的电化学性能,证明了该电极材料的电化学反应动力学以及界面反应的稳定性,低温下仍可保持优异的电化学性能。同时,通过对其反应动力学的研究,进一步证明了电极材料优异的反应动力学与可逆性。快速电化学反应动力学证明了其优良的倍率性能,为在电池实际开发中增添了一种选择。因此,PQ可作为钠离子电池的理想电极材料,同时为开发高性能钠离子电池材料提供了有效的策略。This study used phenanthraquinone as an organic cathode material for sodium ion batteries,exploring its related room temperature and low temperature electrochemical performance,as well as kinetic performance.The results showed that the sodium ion electrode exhibited a high specific capacity of 124 mAh/g at a current density of 100 mA/g,while exhibiting excellent rate performance.Even after 2000 cycles of charging and discharging at a high current of 5 A/g,its capacity retention rate was 96%,demonstrating good cycling stability.By studying its electrochemical performance at low temperatures,the electrochemical reaction kinetics and interface reaction stability of the electrode material have been demonstrated,and excellent electrochemical performance can still be maintained at low temperatures.Meanwhile,the study of its reaction kinetics further proves the excellent reaction kinetics and reversibility of electrode materials.The rapid electrochemical reaction kinetics have demonstrated its excellent rate performance,adding an option for practical battery development.Therefore,PQ can serve as an ideal electrode material for sodium ion batteries and provide an effective strategy for developing high-performance sodium ion battery materials.

关 键 词：有机正极材料 钠离子电池 电化学性能 低温 反应动力学 

分 类 号：O646[理学—物理化学]