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 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 空气。 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在Ni电流收集器上呈阳性电解量V_2O_5颗粒散热的聚苯胺/N-甲基吡咯烷酮溶液，并给出了均匀的聚苯胺和V_2O_5的复合膜。 ft是更多的……多苯胺作为粘合剂以及用于V_2O_5颗粒的矩阵，从而导致由于V205的氧化还原反应而导致出现出色的电荷分离曲线。 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颗粒在酸性条件下呈现高氧化能力，在limn_2o_4二散酸溶液中添加吡咯的氧化能力允许吡咯的氧化聚合，从而为polypyrole和limn_2o_4提供复合粉末。通过用Ni电流收集器按下粉末来制备复合颗粒。已经发现，复合颗粒暴露的电荷 - 电荷反应是4 V类可充电的锂离子电池中的正电极，表明多吡咯可以在导电矩阵和粘合剂的情况下效果很好。复合材料中的多吡咯的表现也像电容器，并有助于增强复合材料的容量密度。较少的