(1. 湘潭大學(xué) 化學(xué)學(xué)院 電化學(xué)能源儲(chǔ)存與轉(zhuǎn)換湖南省重點(diǎn)實(shí)驗(yàn)室，湘潭 411105；
2. 湖南三鑫電源科技有限責(zé)任公司，韶山 411300)
摘 要: 通過(guò)將高比表面積電化學(xué)活性碳和石墨加入到鉛酸電池的負(fù)極活性物質(zhì)中，制備成新型鉛碳負(fù)極，研究其在高倍率部分荷電狀態(tài)(HRPSOC)下的循環(huán)性能。采用激光粒度儀、掃描電鏡(SEM)、充放電機(jī)分別對(duì)材料和電池進(jìn)行表征和測(cè)試。結(jié)果表明：碳的加入極大地提高于電池在高倍率部分荷電態(tài)下工作的循環(huán)壽命，其中以石墨和活性的性能碳混合加入時(shí)循環(huán)性能最好，循環(huán)次數(shù)達(dá)到85402次。SEM結(jié)果表明：碳材料的加入能有效抑制鉛酸電池負(fù)極在大電流放電時(shí)的不可逆硫酸鹽化。
關(guān)鍵字: 活性碳；石墨；鉛碳電池；高倍率部分荷電態(tài)；循環(huán)壽命
（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
