Development of Energy-Storage Electrodes with use of Conducting Polymers as Matrices

以导电聚合物为基质的储能电极的开发

基本信息

批准号：
09555271
负责人：
YONEYAMA Hiroshi
金额：
$ 6.85万
依托单位：
Osaka Universit
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

1 Electrochemical properties of composite of poly(3-n-hexylthiophene) and synthetic graphite as an negative electrode in rechargeable Li ion batteriesA composite film made of poly(3-n-hexylthiophene) and synthetic graphite was prepared by casting poly(3-n-hexylthiophe)/chloroform solution containing dispersed graphite particles on a Cu current collector, followed by diying in air. Charge-discharge tests of the prepared composite as an negative electrode revealed that redox reactions of both graphite and poly(3-n-hexylthiophe) were utilizable and that the use of poly(3-n-hexylthiophe) was effective for reducing the irreversible capacity of graphite which appeared during the first cycle of the charge-discharge tests.2 Charge-discharge properties of composite of polyanihne and V_2Q_5 as a positive electrodeCasting V_2O_5 particles-dispersed polyaniline/n-methylpyrrolidinone solution on a Ni current collector and drying it gave a uniform composite film of polyaniline and V_2O_5. ft was fou … More nd that polyaniline worked as binder as well as conducting matrix for V_2O_5 particles, resulting in appearance of excellent charge-discharge curves due to redox reactions of V205. The redox reaction of polyaniline also contributed to charge-discharge reactions of the composite, giving larger capacity density than a usual V_2O_5 electrode prepared by using carbon and Teflon as conducting matrix and binder, respectively.3 Preparation of composite of polvpvrrole and LiNTh_2O_4 and its electrochemical properties as a positive electrode in 4 V class of rechargeable Li-ion batteriesSince LiMn_2O_4 particles posses high oxidizing power in acidic conditions, addition of pyrrole in LiMn_2O_4-dispersed acid solution allowed oxidative polymerization of pyrrole, giving composite powder of polypyrrole and LiMn_2O_4. The composite pellet was prepared by pressing the powder with a Ni current collector. It was found that the composite pellet exhibited charge-discharge reactions as a positive electrode in 4 V class of rechargeable Li-ion batteries, indicating that polypyrrole worked well as conducting matrix and binder. The polypyrrole in the composite behaved also like a capacitor and contributed to enhancing the capacity density of the composite. Less

1聚（3-N-己基噻吩）和合成石墨的组合的电化学性质，作为由聚（3-N-己基噻吩）和合成石墨制成的再生lion lion teriesa复合膜和合成石墨的负电极，通过铸造聚多 - 己基噻吩）/氯）来制备在Cu电流收集器上包含纪律的解决方案，作为负电极的准备复合材料的电荷分离率表明，石墨和聚（3-n-hexylthiopophe）均可使用均可使用（3-n-n-己二基硫thi虫是有效的，掩盖了电荷分离测试的第一个周期。 IT。矩阵和粘合剂，分别为3 polvpvrrole和linth_2O_4及其电化学特性作为可再生的li-imessince limn_2O_4颗粒在酸性条件下高氧化功率的高氧化能力，允许酸性溶液允许polypyrrrole和limn_2o的氧化氧化。带有Ni电流的粉末，可充电液体，表明polypyrrole是一个电容器