(1. 湘潭大学 化学学院 电化学能源储存与转换湖南省重点实验室，湘潭 411105；
2. 湖南三鑫电源科技有限责任公司，韶山 411300)
摘 要: 通过将高比表面积电化学活性碳和石墨加入到铅酸电池的负极活性物质中，制备成新型铅碳负极，研究其在高倍率部分荷电状态(HRPSOC)下的循环性能。采用激光粒度仪、扫描电镜(SEM)、充放电机分别对材料和电池进行表征和测试。结果表明：碳的加入极大地提高于电池在高倍率部分荷电态下工作的循环寿命，其中以石墨和活性的性能碳混合加入时循环性能最好，循环次数达到85402次。SEM结果表明：碳材料的加入能有效抑制铅酸电池负极在大电流放电时的不可逆硫酸盐化。
关键字: 活性碳；石墨；铅碳电池；高倍率部分荷电态；循环寿命
（1. Hunan Provincial Key Laboratory of Electrochemical Energy Storage and Conversion,
School of Chemistry, Xiangtan University, Xiangtan 411105, China;
2. Hunan Sanxin Power of Science and Technology Co., Ltd., Shaoshan 411300, China）
Abstract:High specific surface area electrochemically active carbon and graphite were doped into the negative active material of lead-acid battery to prepare the new-type negative electrodes of the lead-carbon battery. The cycle performance of the battery under the condition of high-rate partial-state-of-charge (HRPSOC) was studied. Besides, the as-prepared materials and batteries were characterized and tested by laser particle analyzer, scanning electron microscope (SEM) and charge-discharge measurement. The results show that the cycle-life of the batteries whose negative plates doped with carbon is markedly improved compared with that of the battery without carbon, especially the cycle life of the battery with simultaneous addition of active carbon and graphite is the best, the cycle life will be over 85402 cycles. Furthermore, it can be found by SEM that due to the addition of the carbon materials, the sulfation of the negative electrode can be effectively inhibited when the battery is cycled at a heavy load discharge.
Key words: active carbon; graphite; lead-carbon battery; high-rate partial-state-of-charge; cycle-life
