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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-正己基噻吩/合成石墨复合材料作为锂离子电池负极的电化学性能通过将分散有石墨颗粒的聚3-正己基噻吩/氯仿溶液浇铸在铜集流体上，然后在空气中干燥，制备了聚3-正己基噻吩/合成石墨复合膜。对所制备的复合材料进行充放电测试，结果表明，石墨和聚乙烯的氧化还原反应均较好地进行，（3-正己基噻吩）是可利用的，使用聚3-正己基噻吩能有效地降低石墨在第一次充放电循环中出现的不可逆容量。2聚苯胺与V_2Q_5复合物作为正极的充放电性能2O_5粒子分散的聚苯胺/N-甲基吡咯烷酮溶液在Ni集流体上的分散和干燥，得到了均匀的聚苯胺/V_2O_5复合膜。FT是FOU ...更多信息聚苯胺作为V_2O_5粒子的粘结剂和导电基体，使V_2O_5粒子发生氧化还原反应，从而形成良好的充放电曲线。聚苯胺的氧化还原反应也促进了复合材料的充放电反应，其容量密度比以碳和聚四氟乙烯为导电基体和粘合剂制备的V_2O_5电极大，3聚吡咯/LiNTh_2O_4复合材料的制备及其作为4V级锂离子电池正极的电化学性能4粒子在酸性条件下具有较高的氧化能力，在LiMn_2O_4分散的酸性溶液中加入吡咯，使吡咯发生氧化聚合，得到聚吡咯与LiMn_2O_4的复合粉体。通过用Ni集电器压制粉末来制备复合颗粒。结果表明，该复合材料在4V级锂离子电池中具有良好的充放电性能，表明聚吡咯具有良好的导电性能。复合材料中的聚吡咯也表现出类似电容器的行为，有助于提高复合材料的容量密度。少