基于复合材料S@C/CNT@MoO_(2)/Na_(0.88)Mo_(6)O_(17)的镁离子电池的电化学性能  

Electrochemical performance of magnesium-ion battery based on composite S@C/CNT@MoO_(2)/Na_(0.88)Mo_(6)O_(17)

作　　者：王朋朋 单常伟 凌喜民 卫武涛 WANG Pengpeng;SHAN Changwei;LING Ximin;WEI Wutao(School of Materials Electronics and Energy Storage,Zhongyuan University of Technology,Zhengzhou 450007,China;Center for Advanced Materials Research,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]中原工学院材料电子与储能学院,河南郑州450007 [2]中原工学院先进材料研究中心,河南郑州450007

出　　处：《中原工学院学报》2025年第1期38-44,共7页Journal of Zhongyuan University of Technology

基　　金：国家自然科学基金项目(U1804126);河南省自然科学基金项目(242300421635)。

摘　　要：利用凝胶技术、NaCl模板法和高温碳化法,制备出一种具有独特多孔结构的碳材料。通过吸附作用,将钼酸铵包覆在这种碳材料表面。对该材料进行烧结和硫化,合成了一种具有多相异质结的复合材料S@C/CNT@MoO_(2)/Na_(0.88)Mo_(6)O_(17),并对基于该复合材料的镁离子电池进行了循环性能测试。结果表明:该电池在200 mA/g的电流密度下经过300次循环,仍具有90 mAh/g的放电比容量;基于复合材料S@C/CNT@MoO_(2)/Na_(0.88)Mo_(6)O_(17)的镁离子电池不仅继承了基于复合材料CNT@MoO_(2)/Na_(0.88)Mo_(6)O_(17)的电池的长循环稳定性,还展示出了更高的放电比容量。该研究为高性能多相异质储能材料的构筑提供了新思路。A kind of carbon material with unique porous structure was prepared by using gel technology and the NaCl template method,combined with high-temperature carbonization.By the adsorption,ammonium molybdate was coated on the surface of carbon materials,and a heterogeneous structure of S@C/CNT@MoO_(2)/Na_(0.88)Mo_(6)O_(17)was synthesized by sintering and vulcanization.The cycle property test of a magnesium ion battery based on S@C/CNT@MoO_(2)/Na_(0.88)Mo_(6)O_(17) showed that it still has a specific discharge capacity of 90 mAh/g after 300 cycles at a current density of 200 mA/g.The magnesium-ion battery based on S@C/CNT@MoO_(2)/Na_(0.88)Mo_(6)O_(17)not only inherits the long-cycle stability of the battery based on C/CNT@MoO_(2)/Na_(0.88)Mo_(6)O_(17),but also exhibits higher specific discharge capacity.This study provides a new idea for the construction of high performance heterogeneous energy storage materials.

关 键 词：异质结 多孔碳基复合材料 循环 储镁性能 

分 类 号：O646[理学—物理化学]