首页|Engineering Geometric Electrodes for Electric Field-Enhanced High-Performance Flexible In-Plane Micro-Supercapacitors

Engineering Geometric Electrodes for Electric Field-Enhanced High-Performance Flexible In-Plane Micro-Supercapacitors

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In plane micro-supercapacitors that are miniaturized energy storage components have attracted significant attention due to their high power densities for various ubiquitous and sustainable device systems as well as their facile integration on various flexible/wearable platform.To implement the micro-supercapacitors in various practical applications that can accompany solid state or gel electrolyte and flexible substrates,ions must be readily transported to electrodes for achieving high power densities.Herein,we show large enhancement in electrochemical properties of flexible,in-plane micro-supercapacitor using sharp-edged interdigitated electrode design,which was simply fabricated through direct laser scribing method.The sharp-edged electrodes allowed strong electric field to be induced at the corners of the electrode fingers which led to the greater accumulation of ions near the surface of electrode,significantly enhancing the energy storage performance of micro-supercapacitors.The electric field-enhanced in-plane micro-supercapacitor showed the volumetric energy density of 1.52 Wh L-1 and the excellent cyclability with capacitive retention of 95.4％after 20 000 cycles.We further showed various practicability of our sharp-edged design in micro-supercapacitors by showing circuit applicability,mechanical stability,and air stability.These results present an important pathway for designing electrodes in various energy storage devices.

electric field enhancementflexible energy storage devicemicro-supercapacitorssharp electrodes

Jihong Kim、Sung Min Wi、Jong-Guk Ahn、Sangjun Son、HeeYoung Lim、Yeonsu Park、Hye Ji Eun、Jong Bae Park、Hyunseob Lim、Sangyeon Pak、A-Rang Jang、Young-Woo Lee

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Department of Energy Engineering,Soonchunhyang University,Asan 31538,Korea

Department of Chemistry,Gwangju Institute of Science and Technology,Gwangju 61005,Korea

Jeonju Centre,Korea Basic Science Institute,Jeonju 54907,Korea

School of Electronic and Electrical Engineering,Hongik University,Seoul 04066,Korea

Division of Electrical,Electronic and Control Engineering,Kongju National University,Cheonan 31080,Korea

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National Research Foundation of Korea grant funded by the Korean government(MSIT)Korea Institute of Energy Technology Evaluation and Planning(KETEP)Ministry of Trade,Industry,and Energy(MOTIE)of the Republic of KoreaSoonchunhyang University Research Fund

2020R1A2C110103920204030200060

2023

10.1002/eem2.12581

能源与环境材料(英文)

能源与环境材料(英文)

CSCD
ISSN：
年,卷(期)：2023.6(4)
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