欢迎访问《电化学(中英文)》期刊官方网站,今天是
研究论文

三维三聚氰胺碳海绵/碘化钠复合材料作为钠离子电池正极材料的研究

展开
  • a 材料与能源学院, 广东工业大学, 广州, 510006, 中华人民共和国 b 理学院,哈尔滨工业大学(深圳),大学城, 深圳518055, 中华人民共和国 c 深圳市先进功能碳基材料研究与综合应用重点实验室
黄倩莹 , 刘悦 , 林子鑫 , 郑淑怡 , 梅婷婷, 唐宇婷 , 张颖鹤 , 刘军
刘军,张颖鹤

网络出版日期: 2025-03-23

Three-dimensional Melamine Carbon Sponge/NaI as Cathode Materials for Sodium-ion Batteries

Expand
  • a School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, PR China b School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, PR China cShenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application
Qianying Huang , Yue Liu , Zixin Lin , Shuyi Zheng , Tingting Mei , Yuting Tang , Yinghe Zhang , Jun Liu
Jun Liu,Yinghe Zhang

Online published: 2025-03-23

摘要

钠碘(Na-I2)电池作为一种潜在的可替代锂离子电池的储能装置,展现出良好的发展前景。然而,其实际应用受到导电性差、热稳定性不足以及多碘化物溶解与穿梭效应的限制。在本研究中,我们报道了一种通过碳化商用三聚氰胺海绵制备碳海绵(MC)的新方法。所制备的MC具有独特的自生长碳纳米管结构,能够为多碘化物提供物理和化学吸附,从而有效改善Na-I2电池的电化学性能。实验结果表明,NaI/MC电极大幅降低了电化学阻抗,并减少了多碘化物的溶解效应。NaI/MC正极在200次循环测试中平均放电容量为92.75 mAh g-1,同时库仑效率稳定维持在94%。本研究成果展示了在储能钠离子电池领域潜在的应用前景。

本文引用格式

黄倩莹, 刘悦, 林子鑫, 郑淑怡, 梅婷婷, 唐宇婷, 张颖鹤, 刘军 . 三维三聚氰胺碳海绵/碘化钠复合材料作为钠离子电池正极材料的研究[J]. 电化学, 0 : 0 . DOI: 10.61558/2993-074X.3534

Abstract

The sodium-iodine (Na-I) battery exhibits significant potential as an alternative energy storage device to the lithium-ion battery. However, its development is hindered by inadequate electrical and thermal stability, as well as the dissolution and shuttling of polyiodide. In this study, we report a preparation method for melamine carbon sponge (MC) via carbonizing a commercially available kitchen sponge. MC, composed of unique self-growing carbon nanotubes, can provide both physical and chemical adsorption capabilities for intermediate polyiodides to improve the electrochemical performance of NaI. Consequently, the NaI/MC electrode effectively minimizes polyiodide dissolution and reduces the electrochemical impedance. The NaI/MC cathode demonstrates a high average discharge capacity of 92.75mAh g-1 over 200 cycles while maintaining a coulombic efficiency of 94%. The research findings from our study have promising applications in sodium-ion batteries.
文章导航

/