【摘要】 全水系热再生电池以其优异性能在低品位废热回收领域展现了巨大的发展潜力。提升全水系热再生电池输出功率，本文构建多孔竹炭复合电极，研究了不同多孔电极结构和操作参数对电池性能的影响。结果表明，刻蚀后的多孔竹炭复合电极呈现分级孔结构，强化电化学活性面积和电极界面处的物质传输。随着刻蚀温度的升高，对应电极的电化学活性面积和阴阳极峰值电流先升后降。600℃刻蚀竹炭粉电极的最大功率密度为342.5 W/m~2，相对于碳布提升了41.6%。此外，还探究了氨浓度对电池产电性能的影响。随着氨浓度的提升，电池产电性能先提升后降，在氨浓度为5 mol/L时获得最高的产电性能。更多还原

【Abstract】 All-aqueous thermally regenerative batteries have demonstrated significant development potential in the field of low-grade waste heat recovery due to their outstanding performance. To enhance the electricity generation of all aqueous thermally regenerative batteries, this study develops a porous bamboo carbon composite electrode and examines the impact of various porous electrode structures and operational parameters on battery performance. The results indicated that the etched porous bamboo carbon composite electrode exhibited a hierarchical pore structure, which improved both the electrochemical active surface area and material transport at the electrode interface. As the etching temperature increases, the electrochemical active surface area and peak current of both the anode and cathode first increased and then decreased. The maximum power density of etched bamboo carbon electrode at 600℃ reached 342.5 W/m~2, which represented a 41.6% improvement compared to carbon cloth. Additionally, the effect of ammonia concentration on the battery’s power output performance was investigated. As ammonia concentration increased, the power output performance of the battery initially improved and then declined, with the peak performance achieved at an ammonia concentration of 5 mol/L. The decrease in power output performance with increasing ammonia concentration was mainly caused by the gradual intensification of ammonia permeation in the battery.更多还原