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Biologically inspired pteridine redox centres for rechargeable batteries

Cited 131 time in Web of Science Cited 125 time in Scopus
Authors
Hong, Jihyun; Lee, Minah; Lee, Byungju; Seo, Dong-Hwa; Park, Chan Beum; Kang, Kisuk
Issue Date
2014-10
Citation
Nature Communications, Vol.5, p. 5335
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 10A g(-1). Our strategy combined with experimental and theoretical studies suggests guidance for the rational design of organic redox centres.
ISSN
2041-1723
URI
http://hdl.handle.net/10371/165107
DOI
https://doi.org/10.1038/ncomms6335
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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