在高倍率部分荷电态下三维石墨烯对铅酸电池寿命的影响

采用一步水热法制备出三维多孔的石墨烯（3D-rGO），将不同质量分数的3D-rGO添加到负极活性物质中，制备出铅炭电池，并研究其电化学性能. 结果表明，随着3D-rGO质量分数的增加，在高倍率部分荷电状态（HRPSoC）下，不同电池的循环寿命先增大后减小，其中添加3D-rGO质量分数为1.0%的电池在HRPSoC下的循环性能最好，其初始放电容量(0.05C, 185.36 mAh/g)比普通蓄电池(161.94 mAh/g)高14.46%. 循环寿命达到26 425次，比普通铅酸电池的寿命（8 142次）延长了224%.

Effect of Three-dimensional Graphene on the Cycle Life of Lead Acid Battery Operating under the High-rate Partial-state-of-charge Condition

Three-dimensional porous graphene (3D-rGO) was prepared by the one-step hydrothermal method, and was incorporated into the negative active materials at different dosage (mass percentage) to prepare lead carbon batteries. The properties of prepared batteries were characterized. The results showed that with the increase of the doping amount of 3D-rGO, the batterys cycle life under the high-rate partial-state-of-charge (HRPSoC) condition increases first and then decreases. The battery with 1% 3D-rGO exhibits the best performance of HRPSoC, and the initial discharge capacity (0.05C, 185.36 mAh/g) delivered by the battery is 14.46% higher than that of the control cell (161.94 mAh/g). Its cycle life reaches 26 425 cycles, which is improved by more than 224% compared to the cycle life of ordinary lead-acid battery (8 142 cycles).