Monolithically integrated micro-supercapacitors with high areal number density produced by surface adhesive-directed electrolyte assembly

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Sen Wang - , CAS - Dalian Institute of Chemical Physics (Author)
  • Shuanghao Zheng - , CAS - Dalian Institute of Chemical Physics (Author)
  • Xiaoyu Shi - , CAS - Dalian Institute of Chemical Physics (Author)
  • Pratteek Das - , CAS - Dalian Institute of Chemical Physics (Author)
  • Linmei Li - , CAS - Dalian Institute of Chemical Physics (Author)
  • Yuanyuan Zhu - , CAS - Dalian Institute of Chemical Physics (Author)
  • Yao Lu - , CAS - Dalian Institute of Chemical Physics (Author)
  • Xinliang Feng - , Chair of Molecular Functional Materials (cfaed), Max Planck Institute of Microstructure Physics (Author)
  • Zhong Shuai Wu - , CAS - Dalian Institute of Chemical Physics, University of Chinese Academy of Sciences (Author)

Abstract

Accurately placing very small amounts of electrolyte on tiny micro-supercapacitors (MSCs) arrays in close proximity is a major challenge. This difficulty hinders the development of densely-compact monolithically integrated MSCs (MIMSCs). To overcome this grand challenge, we demonstrate a controllable electrolyte directed assembly strategy for precise isolation of densely-packed MSCs at micron scale, achieving scalable production of MIMSCs with ultrahigh areal number density and output voltage. We fabricate a patterned adhesive surface across MIMSCs, that induce electrolyte directed assembly on 10,000 highly adhesive MSC regions, achieving a 100 µm-scale spatial separation between each electrolyte droplet within seconds. The resultant MIMSCs achieve an areal number density of 210 cells cm−2 and a high areal voltage of 555 V cm−2. Further, cycling the MIMSCs at 190 V over 9000 times manifests no performance degradation. A seamlessly integrated system of ultracompact wirelessly-chargeable MIMSCs is also demonstrated to show its practicality and versatile applicability.

Details

Original languageEnglish
Article number2850
JournalNature communications
Volume15
Issue number1
Publication statusPublished - Dec 2024
Peer-reviewedYes