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Development of ultra-thin-film batteries and capacitors

超薄膜电池和电容器的开发

基本信息

批准号：
17206065
负责人：
MIYAYAMA Masaru
金额：
$ 27.62万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
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/en/grant/KAKENHI-PROJECT-17206065/
关键词：
Nanomaterials Fuel cell Capacitor Protonic conductor Layer-structured crystal

项目摘要

Monolayer nanosheets were stacked on a conductive substrate, and electrochemical capacitances by lithium intercalation were evaluated. Capacitances close to the theoretical value were observed in titanate-nanosheet layers up to a thickness of 40 nm and manganate-nanosheet layers up to 10 nm. The capacitances decreased with increasing thickness above the critical thickness. Preparation of dense, flat-surface titanate-nanosheet layers up to 100 nm thickness was possible by use of electrophoretic deposition. A mixed-layer compound was synthesized by reassembly of titanate- and manganate- nanosheets. The compound showed new charge/discharge properties, which are not observed in single-component compounds.Lithium-ion battery electrodes composed of restacked titanate-nanosheets and conductive carbon showed high-rate charge/discharge properties under large current densities. A composite electrode of porous carbon and manganate-nanosheet also showed high-rate properties with a power density above 1 kW/kg.Proton-conductive membranes composed of sulfonated poly(ether ether ketone) and nanosheets delaminated from layered zirconium phosphate were prepared. Heat durability, water insolubility and high proton conductivity at 150℃ indicated the composite membrane to be a promising candidate for intermediate-temperature fuel cells.Two perovskite nanosheets with different B-site cations were prepared, and mixed-layer compounds were synthesized by reassembly of these nanosheets. The compounds had a larger lattice parameter and smaller dielectric permittivity than those of randomly B-site oriented perovskite oxides. Nanosheet process was indicated to be effective to create dielectrics with novel structure and properties.

将单层纳米片堆叠在导电基底上，并评估通过锂嵌入的电化学电容。在厚度高达40 nm的钛酸盐纳米片层和厚度高达10 nm的锰酸盐纳米片层中观察到接近理论值的电容。电容随厚度的增加而减小，超过临界厚度。通过使用电泳沉积，可以制备厚度高达100 nm的致密的平坦表面钛酸盐纳米片层。通过钛酸盐和钛酸盐纳米片的重新组装，合成了混合层化合物。该复合物表现出了单组分复合物所没有的新的充放电性能，由复合钛酸盐纳米片和导电碳组成的锂离子电池电极在大电流密度下表现出了高倍率充放电性能。多孔碳和锰纳米片的复合电极也表现出高倍率性能，功率密度超过1 kW/kg。质子导电膜由磺化聚醚醚酮和层状磷酸锆分层的纳米片组成。制备了两种不同B位阳离子的钙钛矿纳米片，并将其组装成混层化合物。该化合物具有较大的晶格参数和较小的介电常数比那些随机B位取向的钙钛矿氧化物。纳米片工艺是一种制备具有新颖结构和性能的纳米复合材料的有效方法。

项目成果

期刊论文数量（191）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

電池革新が拓く次世代電源

电池创新引领的下一代电源

DOI：
发表时间：
2006
期刊：
影响因子：
0
作者：
N.Arimitsu;A.Nakajima;K.Katsumata;T.Shiota;N.Yoshida;T.Watanabe;Y.Kameshima;K.Okada;M.K.I.Senevirathna;G.R.A.Kumara;G.R.A.Kumara;B.Onwona-Agyeman;辰巳国昭他
通讯作者：
辰巳国昭他

Structure Design of High-rate Insertion Electrodes Using Titanate Nanosheets and Carbon Fibers

使用钛酸盐纳米片和碳纤维的高倍率插入电极的结构设计