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Biologically inspired pteridine redox centres for rechargeable batteries

Author

Listed:
  • Jihyun Hong

    (Research Institute of Advanced Materials (RIAM), Seoul National University)

  • Minah Lee

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Byungju Lee

    (Research Institute of Advanced Materials (RIAM), Seoul National University)

  • Dong-Hwa Seo

    (Research Institute of Advanced Materials (RIAM), Seoul National University
    Present address: Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA)

  • Chan Beum Park

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Kisuk Kang

    (Research Institute of Advanced Materials (RIAM), Seoul National University
    Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul National University)

Abstract

The use of biologically occurring redox centres holds a great potential in designing sustainable energy storage systems. Yet, to become practically feasible, it is critical to explore optimization strategies of biological redox compounds, along with in-depth studies regarding their underlying energy storage mechanisms. Here we report a molecular simplification strategy to tailor the redox unit of pteridine derivatives, which are essential components of ubiquitous electron transfer proteins in nature. We first apply pteridine systems of alloxazinic structure in lithium/sodium rechargeable batteries and unveil their reversible tautomerism during energy storage. Through the molecular tailoring, the pteridine electrodes can show outstanding performance, delivering 533 Wh kg−1 within 1 h and 348 Wh kg−1 within 1 min, as well as high cyclability retaining 96% of the initial capacity after 500 cycles at 10 A g−1. Our strategy combined with experimental and theoretical studies suggests guidance for the rational design of organic redox centres.

Suggested Citation

  • Jihyun Hong & Minah Lee & Byungju Lee & Dong-Hwa Seo & Chan Beum Park & Kisuk Kang, 2014. "Biologically inspired pteridine redox centres for rechargeable batteries," Nature Communications, Nature, vol. 5(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6335
    DOI: 10.1038/ncomms6335
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