摘要
本文以分级孔碳材料为基底构建Cu/C复合电极,获得稳定的电极骨架和高电极比表面积,提升了热再生电池性能。实验对比研究了复合电极电池性能,探究了关键制备参数的影响。结果表明,采用复合电极电池最大功率密度(70.6 W·m^(-2))相对于泡沫铜电池(32.2 W·m^(-2))提高了119%,这主要是由于其比表面积的提升。在一定范围内提升碳化温度和造孔剂比例,能有效提高电极比表面积,电池性能也随之增大。考虑能量输入,制备Cu/C复合电极的最佳碳化温度为800℃,最佳造孔剂比例为10:1,电池获得最大功率密度为87.2 W·m^(-2)。
In this paper,Cu/C composite electrode was constructed based on hierarchical porous carbon material to obtain a stable electrode skeleton and high specific surface area,which improved the performance of thermally regenerative batteries.The performance of the batteries adapting composite electrode battery was studied relatively and the influence of key preparation parameters was explored.The results show that the maximum power density of the composite electrode cell(70.6 W·m^(−2)) is 119%higher than that of the copper foam battery(32.2 W·m^(-2)),which is mainly due to the improvement of its specific surface area.Increasing carbonization temperature and pore-forming agent ratio in a certain range can effectively improve the specific surface area of the electrode,and thus increase the battery performance.Considering the energy input,the optimum carbonization temperature of Cu/C composite electrode is 800℃,the optimum pore-forming agent ratio is 10:1,and the maximum power density of the battery is 87.2 W·m^(−2).
作者
安一超
张亮
蒋强
李俊
付乾
朱恂
廖强
AN Yichao;ZHANG Liang;JIANG Qiang;LI Jun;FU Qian;ZHU Xun;LIAO Qiang(Key Laboratory of Low-grade Energy Utilization Technologies and Systems,Chongqing University,Ministry of Education,Chongqing 400030,China;Institute of Engineering Thermophysics,Chongqing University,Chongqing 400030,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2024年第1期199-204,共6页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.51976018)
国家自然科学基金创新课题组资助(No.52021004)
重庆归国留学人员科研基金(No.cx2021088)。
关键词
热再生电池
分级孔复合电极
电极比表面积
传质
最大功率密度
thermally regenerative battery
composite electrode with gradient pores
electrode specific surface area
mass transfer
maximum power density
