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利用激光制备多层石墨烯设计的对称超级电容器器件的电化学性能

Gargi Dhiman Kavita Kumari Bon-Heun Koo Faheem Ahmed Nagih M.Shaalan Saurabh Dalela Parvez A.Alvi Ranjeet Kumar Brajpuriya Shalendra Kumar

新型炭材料（中英文）2024，Vol.39Issue(6)：1128-1143,16.
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新型炭材料（中英文）2024，Vol.39Issue(6)：1128-1143,16.DOI:10.1016/S1872-5805(24)60891-7

利用激光制备多层石墨烯设计的对称超级电容器器件的电化学性能

Electrochemical performance of a symmetric supercapacitor device designed using laser-produced multilayer graphene

Gargi Dhiman 1Kavita Kumari 2Bon-Heun Koo 2Faheem Ahmed 3Nagih M.Shaalan 4Saurabh Dalela 5Parvez A.Alvi 6Ranjeet Kumar Brajpuriya 1Shalendra Kumar1

作者信息

  • 1. Department of Physics,School of Advanced Engineering,UPES,Dehradun 248007,India
  • 2. Industrial Technology Research Institute,Changwon National University,Changwon,Gyeongnam 51140,Republic of Korea
  • 3. Department of Applied Sciences and Humanities,Faculty of Engineering and Technology,Jamia Millia Islamia,New Delhi 110025,India
  • 4. Department of Physics,College of Science,King Faisal University,P.O.Box 400,Al-Ahsa 31982,Saudi Arabia||Physics Department,Faculty of Science,Assiut University,Assiut 71516,Egypt
  • 5. Department of Pure & Applied Physics,University of Kota,Kota,Rajasthan 324005,India
  • 6. Department of Physical Science,Banasthali Vidyapith,Banasthali,Rajasthan,304022,India
  • 折叠

摘要

Abstract

We report an economical approach for the fabrication of laser-produced graphene(LPG)electrodes,which results in an improved electrochemical performance.Polyimide polymer was used as the starting material for LPG synthesis and was irradiated under ambient conditions with a CO2 laser.The prepared LPG samples were characterized by Raman spectroscopy and FTIR,which validated the formation of multilayer graphene containing sp2 hybridized C=C bonds.FE-SEM revealed three-dimensional(3D)sheet-like structures,while HR-TEM images showed lattice planes with an interplanar spacing of approximately 0.33 nm,corres-ponding to the(002)plane of graphene.Their electrochemical performance showed a remarkable areal specific capacitance(CA)of 51 mF cm-2(170 F g-1)at 1 mA cm-2(3.3 A g-1)in a three-electrode configuration with 1 mol L-1 KOH as the aqueous electrolyte.The LPG electrodes produced an energy density of～3.5 μWh cm-2 and a power density of～350 μW cm-2,demonstrating signific-ant energy storage ability.They also had an excellent cycling stability,retaining 87％of their specific capacitance after 3 000 cycles at 1 mA/cm2.A symmetric supercapacitor fabricated with LPG electrodes and the 1 mol L-1 KOH electrolyte had a specific capacit-ance of 23 mF cm-2 and showed excellent retention after 10 000 cycles,showing LPG's potential for use in supercapacitors.

关键词

超级电容器/石墨烯/激光直写石墨烯/电化学研究/电荷储存机理

Key words

Supercapacitors/Graphene/LPG/Electrochemical studies/Charge storage mechanism

分类

化学化工

引用本文复制引用

Gargi Dhiman,Kavita Kumari,Bon-Heun Koo,Faheem Ahmed,Nagih M.Shaalan,Saurabh Dalela,Parvez A.Alvi,Ranjeet Kumar Brajpuriya,Shalendra Kumar..利用激光制备多层石墨烯设计的对称超级电容器器件的电化学性能[J].新型炭材料（中英文）,2024,39(6):1128-1143,16.

基金项目

One of the authors,Gargi Dhiman,would like to acknowledge UPES,Dehradun,for providing PhD fel-lowship and SEED Grant. （）

新型炭材料（中英文）

OA北大核心CSTPCD

1007-8827

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