摘要
对18650型钛酸锂/锰酸锂电池的负极配方进行优化。导电剂Super P含量为5％（相对钛酸锂）为最优配方。以该配方制备的电池在2.8～1.5 V充放电，30 C放电可放出1 C容量的95％以上；以10 C充电可在5 min内充入80％的容量，且表面温度最高不超过46℃；以1 C在-30℃下可放出室温容量的86.2％，可充入室温容量的65.8％；以10 C 100％DOD循环1000次，容量仍保持在93％以上；并可通过过充、短路和针刺等安全测试。
Anode formula of 18650 type lithium titanate/lithium manganate battery was optimized. The formula with 5% conduc-tive agent super P（vs. lithium titanate）was the optimum. When charged-discharged in 2.8 ~1.5 V,the discharge capacity of the battery prepared according to this formula at 30 C was more than 95%of the one at 1 C. 80%of capacity could be charged at 10 C within 5 min,the maximum surface temperature of the battery went up to only 46 ℃. 86.2% and 65.8% of capacity at room tem-perature could be discharged and charged respectively at -30 ℃ and 1 C. The capacity retention was more than 93% after 1 000 cycles at 10 C in 100% DOD. The battery could pass the safety test items including overcharge,short circuit and nail.
出处
《电池》
CAS
CSCD
北大核心
2014年第1期21-23,共3页
Battery Bimonthly
基金
上海市科委"创新行动计划"社会发展领域科技计划-节能减排专项(12dz1200400)
