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Development of supercapacitor with hybrid electrodes consisting composites of meso-porous cation and metal oxide

介孔阳离子和金属氧化物复合材料超级电容器的开发

基本信息

批准号：
17350097
负责人：
TAKASU Yoshio
金额：
$ 10.17万
依托单位：
Shinshu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17350097/
关键词：
Capacitor Activated carbon Supercapacitor Meso pore Carbon black Metal oxide Electric double layer Pseudo-canacitance 擬似二重層金属酸化物電極

项目摘要

Nanoholes and nanochannels of 5-50 nm in widths and diameters, respectively, were created on/in activated carbon, carbonized silk activated carbon and diamond electrode (BDD) through heat-treatment in hydrogen atmosphere after loading of cobalt nanoparticles on these carbon materials. This modification of carbon materials must result in the enhancement of the capacitance of activated carbons and the tight loading of oxide particles on the carbon materials by anchor effect. It was also found that graphite layers were formed on/in activated carbons through the moving of the cobalt particles on the carbon surface. A model for the formation mechanism of these graphite layers was proposed. This partial graphitization of activated carbons must lead to the enhancement of both electric conductivity and capacitor characteristics of activated carbons. If the heating condition was controlled between 800-1000℃, the metal nonoparticles (Co, Ni, Pt) could be half-incorporated into the surface layers of activated carbons by the loading of metal nanoparticles on activated carbons and boron-doped diamonds (BDDs). By using BDD as a test material, both the precise grooving phenomena of carbon materials with metal nanoparticles and the increase of capacitance of carbon were clarified.On the other hand, meso- and macroporous RuO2 were prepared. In order to hybridize the capacitor with micro fuel cells, ruthenic acid nanosheets were electrochemically casted on electrodes, and a micro-super capacitor was constracted with them on a trial basis.

在活性炭、蚕丝活性炭和金刚石电极（BDD）上负载钴纳米颗粒后，通过氢气热处理，在这些碳材料上形成了宽度和直径分别为5-50 nm的纳米孔和纳米通道。炭材料的这种改性必然导致活性炭电容的提高和氧化物颗粒通过锚效应紧密负载在炭材料上。研究还发现，通过钴颗粒在活性炭表面的移动，在活性炭表面或炭中形成石墨层。提出了这些石墨层的形成机理模型。活性炭的这种部分石墨化必然导致活性炭的导电性和电容器特性的增强。在800-1000℃的加热条件下，通过在活性炭和掺硼金刚石（BDDs）表面负载金属纳米粒子（Co、Ni、Pt），可以将金属纳米粒子半嵌到活性炭表面。以BDD为实验材料，研究了金属纳米颗粒在碳材料中的精确刻槽现象和碳材料电容的增加。为了将电容器与微型燃料电池混合，将油酸纳米片电化学浇铸在电极上，并在试验的基础上与它们一起组装微型超级电容器。