双电层电容器及其复合电源系统的研制

Research on the Carbon Based Double-Layer Capacitor and Hybrid Power Source

碳基双电层电容器作为一种新一代储能系统具有广泛的应用 .直流充放电、循环伏安特性以及交流阻抗等实验显示了本实验室制备的活性炭材料组装的电容器具有良好的电化学性能 ,比容量为 173 2F/g ,在大功率充放电条件下的活性物质的能量密度大于 5 0Wh/kg,同时具有 10 5以上的循环寿命 .由双电层电容器与镍氢电池组成的复合电源系统具有优良的脉冲充放电特性 ,在GSM、CDMA移动通讯系统以及电动车电源等领域具有广泛的用途 .

Electrochemical Double Layer Capacitors (EDLCs) are playing great roles in Research-and-Development field of power engineering as a new energy store device.The porous carbon material developed in our Lab exhibits perfect physical structure and properties.Its good electrochemical performances were confirmed by the experiment of CV and AC impedance analysis etc.The specific capacitance of active carbon was 173.2F/g at the 16mA/cm 2 current density discharge.And under large discharge current condition,the specific capacitance of EDLC decayed little with a thrilling life over 10 5 times at the same time.A hybrid power source consisting of Nickel-hydrogen and double layer capacitor was demonstrated to power successfully a simulated load encountered in communication equipment.