• Facile Fabrication of Collector-Free Supercapacitors Based on Silver Nanowire–Activated Carbon Composites
  • Myounggun Kim*, **,# , Seung-Yul Lee*, **,# , Moon Jong Han***, ****, Da-Seul Kim*, **,† , and Ju-Hyung Kim*, **,†

  • *Department of Energy Systems Research, Ajou University, Suwon 16499, Korea
    **Department of Chemical Engineering, Ajou University, Suwon 16499, Korea
    ***Department of Semiconductor & Electronic Engineering, Gachon University, Seongnam 13120, Korea
    ****School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States

  • 은 나노 와이어-활성탄 복합체 기반 집전체 없는 슈퍼커패시터의 간소화된 제작 공정
  • 김명건*, **,# · 이승율*, **,# · 한문종***, **** · 김다슬*, **,† · 김주형*, **,†

  • *아주대학교 에너지시스템학과, **아주대학교 화학공학과, ***가천대학교 반도체공학과, ****조지아공과대학교 재료공학과

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.


Abstract

With the growing demand for lightweight and flexible energy storage systems, we developed a composite electrode for a current collector-free supercapacitor. The design combines silver nanowires (AgNWs) and activated carbon (AC) to overcome the limitations of conventional metal film current collectors. Electrochemical performance was systematically optimized by tuning the AgNW:AC ratio, with optimal results obtained at 1:24. The resulting supercapacitor exhibited a volumetric capacitance of 16.3 mF cm-3, an energy density of 1.46 μWh cm-3, and a power density of 0.13 mW cm-3 within a stable 0-0.8 V operating range. This composite electrode simplifies fabrication, reduces device weight, and offers inherent potential for mechanical flexibility. Overall, this work provides a proof-of-concept approach for the development of scalable, current collector-free supercapacitors.


경량화 및 유연성이 요구되는 에너지 저장 시스템의 수요가 증가함에 따라, 본 연구에서는 집전체가 불필요한 슈퍼커패시터용(supercapacitor) 복합 전극을 개발하였다. 제안된 전극은 은 나노와이어(AgNWs)와 활성탄(AC)을 결합하여 기존 금속 박막 집전체의 한계를 극복하고자 하였다. 전기화학적 성능은 AgNW:AC 비율을 조절하여 체계적으로 최적화하였으며, 그 결과 1:24 조성에서 최적의 성능을 확보하였다. 제작된 슈퍼커패시터는 0-0.8 V의 작동 범위 내에서 체적 정전용량 16.3 mF cm-3, 에너지 밀도 1.46 mWh cm-3, 출력 밀도 0.13 mW cm-3를 나타내었다. 이러한 복합 전극은 제작 공정을 단순화하고 소자의 무게를 줄이는 동시에 기계적 유연성 측면에서도 잠재적 가능성을 제공한다. 본 연구는 대면적 확장이 가능한 집전체 없는 슈퍼커패시터 개발을 위한 개념 증명적 접근을 제시한다.


Keywords: composite electrodes, silver nanowires, activated carbon, current collector-free, supercapacitors.

Acknowledgements

This work was supported by the Ajou University research fund.

Conflict of Interest

The authors declare that there is no conflict of interest.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2026; 50(1): 161-166

    Published online Jan 25, 2026

  • 10.7317/pk.2026.50.1.161
  • Received on Sep 8, 2025
  • Revised on Oct 7, 2025
  • Accepted on Oct 11, 2025

Correspondence to

  • Da-Seul Kim*, ** , and Ju-Hyung Kim*, **
  • *Department of Energy Systems Research, Ajou University, Suwon 16499, Korea
    **Department of Chemical Engineering, Ajou University, Suwon 16499, Korea

  • E-mail: kimda313@ajou.ac.kr, juhyungkim@ajou.ac.kr
  • ORCID:
    0009-0004-0828-3866, 0000-0002-0925-3368