3D periodic polyimide nano-networks for ultrahigh-rate and sustainable energy storage

Youngjin Ham, Nathan J. Fritz, Gayea Hyun, Young Bum Lee, Jong Seok Nam, Il Doo Kim, Paul V. Braun, Seokwoo Jeon

Research output: Contribution to journalArticlepeer-review


Organic molecules with redox-active motifs have attracted great attention as next-generation electrodes for sustainable energy storage. While there has been significant progress in designing redox-active molecules, the practical requirements of high electrochemical activity and stability, as well as rapid kinetics for fast charging, are motivating a search for methods to engineer three-dimensional (3D) structures of organic-based electrodes. Here, we demonstrate a lithographic fabrication strategy for realizing a 3D bicontinuous nano-network consisting of a periodically porous nickel-supported redox-active polyimide layer (pore radius <300 nm), which provides highly conductive pathways for electron and ion transport. Through super-lithiation of nearly all unsaturated CC bonds in this 3D-structured anode, a high reversible capacity of 1260 mA h g-1 and 82.8% capacity retention over 250 cycles at a 10C rate are realized. Rates of up to 400C for lithium-ion storage of organic anodes have been achieved for the first time, opening up new engineering opportunities for high-performance organic batteries.

Original languageEnglish (US)
Pages (from-to)5894-5902
Number of pages9
JournalEnergy and Environmental Science
Issue number11
StatePublished - Nov 2021

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution


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