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Kim, Guntae
GUNS Lab
Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, PEMFC, metal-air batteries, Metal-CO2 system

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Paper Air Cathodes with One-Dimensional Perovskite Nanofiber for Origami-Foldable/Rechargeable Zn-Air Batteries

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Title
Paper Air Cathodes with One-Dimensional Perovskite Nanofiber for Origami-Foldable/Rechargeable Zn-Air Batteries
Other Titles
일차원 페로브스카이트 나노 섬유를 사용한 접이식/충전가능 아연 공기전지용종이공기전극
Author
이한솔김건태
Issue Date
2019-11-13
Publisher
한국세라믹학회
Citation
2019 한국세라믹학회 추계학술대회
Abstract
To satisfy the demand for flexible/wearable electronics, we demonstrate paper air cathodes to fabricate foldable Zn-air batteries with reliable electrochemical rechargeability. The paper air cathodes consist of one-dimensional (1D) bifunctional catalyst mixtures (NdBa0.5Sr0.5Co1.5Fe0.5O5+δ layered perovskite (NBSCF) nanofibers and nitrogen-doped carbon nanotubes (N-CNT)), cellulose nanofibers (CNF), and polytetrafluoroethylene (PTFE). The PTFE and CNF act as hydrophobic and hydrophilic binders, respectively, to construct three-dimensional (3D) bicontinuous air/electrolyte channels in the paper air cathodes. The well-combined electrolyte/air transport pathways allow the Zn-air batteries to exhibit highly efficient charge/discharge performance and cyclability. Moreover, the highly entangled network structure of the paper air cathode enhances mechanical flexibility, allowing the Zn-air battery to be folded into a paperairplane shape through origami folding.
URI
https://scholarworks.unist.ac.kr/handle/201301/32953
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