【摘要】 采用化学氧化法制备聚苯胺,经氨水脱掺杂后,在水溶液中分别用无机酸和锂盐掺杂,用作锂-聚苯胺二次电池正极材料。XRD和四探针电阻测试结果表明:聚苯胺在Li Cl和Li2SO4中的掺杂率很低,在HCl、HCl O4、H2SO4和Li Cl O4中的掺杂率很高。将不同掺杂态的聚苯胺粉末压制成型,并组装成锂-聚苯胺二次电池,以25 m A/g的电流在2.0~4.0 V充放电,高氯酸锂掺杂的聚苯胺组装的锂-聚苯胺二次电池,放电比容量最高可达到143.95 m Ah/g,循环10次的容量衰减率仅为2.2%。更多还原

【Abstract】 Polyaniline was synthesized by chemical oxidation polymerization,then dedoped with ammonia water. The resulting polyaniline was doped with acid and lithium salt in aqueous solution,then was used as cathode materials for lithium-polyaniline secondary battery. The results which was investigated by XRD and four-probe method showed that the doping rates of polyaniline with Li Cl and Li2SO4 were low,while with HCl,HClO4,H2SO4 and LiClO4 were high. A series of lithium-polyaniline secondary batteries were fabricated with the doped polyaniline. When charged-discharged in 2. 0 ~ 4. 0 V with the current of 25 m A / g,the specific discharge capacity of lithium-polyaniline secondary battery doped with LiClO4 was as high as 143. 95 m Ah / g,the capacity decay ratio was only2. 2% after 10 cycles.更多还原