Affiliation:
1. Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) 335 Science Road Daejeon 34141 Republic of Korea
2. Department of Materials Science and Engineering Chungnam National University 99 Daehak‐ro Daejeon 34134 Republic of Korea
3. Department of Chemistry Seoul National University 1 Gwanak‐ro Seoul 08826 Republic of Korea
Abstract
AbstractHerein, the self‐reinforced inductive effect derived from coexistence of both p‐ and n‐type redox‐active motifs in a single organic molecule is presented. Molecular orbital energy levels of each motif are dramatically tuned, which leads to the higher oxidation and the lower reduction potentials. The self‐reinforced inductive effect of the symmetric bipolar organic molecule, N,N’‐dimethylquinacridone (DMQA), is corroborated, by both experimental and theoretical methods. Furthermore, its redox mechanism and reaction pathway in the Li+‐battery system are scrutinized. DMQA shows excellent capacity retention at the operating voltage of 3.85 and 2.09 V (vs Li+/Li) when used as the cathode and anode, respectively. Successful operation of DMQA electrodes in a symmetric all‐organic battery is also demonstrated. The comprehensive insight into the energy storage capability of the symmetric bipolar organic molecule and its self‐reinforced inductive effect is provided. Thus, a new class of organic electrode materials for symmetric all‐organic batteries as well as conventional rechargeable batteries can be conceived.
Funder
Ministry of Education
National Research Foundation of Korea
Subject
General Physics and Astronomy,General Engineering,Biochemistry, Genetics and Molecular Biology (miscellaneous),General Materials Science,General Chemical Engineering,Medicine (miscellaneous)
Cited by
3 articles.
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