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首页> 外文期刊>Journal of industrial and engineering chemistry >Improved electrochemical properties of highly porous amorphous manganese oxide nanoparticles with crystalline edges for superior supercapacitors
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Improved electrochemical properties of highly porous amorphous manganese oxide nanoparticles with crystalline edges for superior supercapacitors

机译：高孔无定形锰氧化物纳米粒子的改善电化学性质，具有优质超级电容器的晶体边缘

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摘要

An electrochemical electrode, based on dual-morphology manganese-oxide nanoparticles, is fabricated via acidic reduction of potassium permanganate, which consists of amorphous, porous surface, terminated by crystalline edges. The higher surface-to-volume ratio into the pores promotes the surface redox reaction via higher utilization of active materials, whereas the crystalline edges enhance bulk insertion/de-insertion of cations/protons to promote bulk redox reactions. This combinatorial effect increases the charge storage performance of the manganese-oxide-based supercapacitor electrode considerably, with a specific capacitance similar to 1000 Fg(-1). Additionally, removal of K+-ions within manganese-oxide matrix, via repeated rinsing steps during synthesis, enhances the charge transport properties for improved supercapacitive activity. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：基于双形态学锰氧化物纳米颗粒的电化学电极通过酸性化锰酸盐的酸性还原制备，该钾酸钾由无定形的多孔表面组成，由结晶边缘终止。 在孔隙中较高的表面到体积比通过高效利用活性材料促进表面氧化还原反应，而结晶边缘增强了散热/脱离的阳离子/质子以促进批量氧化还原反应。 该组合效应显着提高了基于氧化锰的超级电容器电极的电荷存储性能，具有类似于1000 fg（-1）的特定电容。 另外，通过合成期间通过重复的漂洗步骤除去锰氧化物基质中的K + - +离子，增强了用于改善的超级电容活性的电荷传输性能。 （c）2017年韩国工程和工程化学学会。 elsevier b.v出版。保留所有权利。

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