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分级孔碳基复合电极热再生电池性能强化

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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.
A Composite Electrode With Gradient Pores for High-performance Thermally Regenerative Batteries
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.

thermally regenerative batterycomposite electrode with gradient poreselectrode specific surface areamass transfermaximum power density

安一超、张亮、蒋强、李俊、付乾、朱恂、廖强

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重庆大学低品位能源利用技术及系统教育部重点实验室,重庆 400030

重庆大学工程热物理研究所,重庆 400030

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

国家自然科学基金国家自然科学基金创新课题组资助重庆归国留学人员科研基金

5197601852021004cx2021088

2024

工程热物理学报
中国工程热物理学会 中国科学院工程热物理研究所

工程热物理学报

CSTPCD北大核心
影响因子：0.4
ISSN：0253-231X
年,卷(期)：2024.45(1)
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