燃料化学学报（中英文）2025，Vol.53Issue(5)：646-662,中插1-中插3,20.DOI:10.1016/S1872-5813(24)60511-6
提升平面微超级电容器能量密度:少层石墨烯/碳黑/镍钴氧化物复合材材的作用
Enhancing energy density in planar micro-supercapacitors:The role of few-layer graphite/carbon black/NiCo2O4 composite materials
摘要
Abstract
The advancement of planar micro-supercapacitors(PMSCs)for micro-electromechanical systems(MEMS)has been significantly hindered by the challenge of achieving high energy and power densities.This study addresses this issue by leveraging screen-printing technology to fabricate high-performance PMSCs using innovative composite ink.The ink,a synergistic blend of few-layer graphene(Gt),carbon black(CB),and NiCo2O4,was meticulously mixed to form a conductive and robust coating that enhanced the capacitive performance of the PMSCs.The optimized ink formulation and printing process result in a micro-supercapacitor with an exceptional areal capacitance of 18.95 mF/cm2 and an areal energy density of 2.63 µW·h/cm2 at a current density of 0.05 mA/cm2,along with an areal power density of 0.025 mW/cm2.The devices demonstrated impressive durability with a capacitance retention rate of 94.7%after a stringent 20000-cycle test,demonstrating their potential for long-term applications.Moreover,the PMSCs displayed excellent mechanical flexibility,with a capacitance decrease of only 3.43%after 5000 bending cycles,highlighting their suitability for flexible electronic devices.The ease of integrating these PMSCs into series and parallel configurations for customized power further underscores their practicality for integrated power supply solutions in various technologies.关键词
石墨/碳黑复合材料/镍钴氧化物/丝网印刷/平面微型超级电容器/能量密度/机械柔性Key words
graphite/carbon black composite/NiCo2O4/screen printing/planar micro-supercapacitor/energy density/mechanical flexibility分类
通用工业技术引用本文复制引用
张王刚,黄雷,王梦虎,王剑,卫爱丽,刘一鸣..提升平面微超级电容器能量密度:少层石墨烯/碳黑/镍钴氧化物复合材材的作用[J].燃料化学学报（中英文）,2025,53(5):646-662,中插1-中插3,20.基金项目
The project was supported by the Shanxi Province Central Guidance Fund for Local Science and Technology Development Project(YDZJSX2024D030),the National Natural Science Foundation of China(22075197,22278290),the Shanxi Province Key Research and Development Program Project(2021020660301013),the Shanxi Provincial Natural Science Foundation of China(202103021224079)and the Research and Development Project of Key Core and Common Technology of Shanxi Province(20201102018). （YDZJSX2024D030）
