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首页> 外文期刊>Journal of power sources >Post-infiltration of a multilayered carbon nanofilm with MnO2 at low loadings for improved capacitive properties
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Post-infiltration of a multilayered carbon nanofilm with MnO2 at low loadings for improved capacitive properties

机译:在低负荷下用MnO2渗入多层碳纳米膜以提高电容性能

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摘要

A multilayered carbon nanosphere (CNS)/manganese oxide (MnO2) nanofilm is fabricated by a newly developed layer-by-layer (LBL) post-infiltration approach. The multilayered architecture effectively shortens the length over which ions diffuse, and the nanoscaled carbon/MnO2 interface provides an interconnected pathway for electron conduction. MnO2 acts not only as the redox center for charge storage, but also as the spacer between the LBL-assembled multilayers for more rapid electrolyte transport. A specific capacitance (based on MnO2) of 1134.0 F g(-1) is achieved at a loading of 5.22 mu g cm(-2) in a neutral electrolyte. This strategy provides a promising approach for fabricating high-power and high-energy electrochemical capacitors with precise control of electrode thickness on geometric device surfaces. (C) 2017 Elsevier B.V. All rights reserved.
机译:多层碳纳米球(CNS)/氧化锰(MnO2)纳米膜是通过新开发的逐层(LBL)后渗透方法制造的。多层体系结构有效地缩短了离子扩散的长度,纳米级碳/ MnO2界面为电子传导提供了相互连接的途径。 MnO2不仅充当电荷存储的氧化还原中心,而且还充当LBL组装的多层之间的间隔物,以实现更快的电解质传输。在中性电解液中负载5.22μg cm(-2)时,可实现1134.0 F g(-1)的比电容(基于MnO2)。该策略为通过精确控制几何器件表面上的电极厚度来制造大功率,高能量的电化学电容器提供了一种有前途的方法。 (C)2017 Elsevier B.V.保留所有权利。

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