Coupling Tetraalkylammonium and Ethylene Glycol Ether Side Chain To Enable Highly Soluble Anthraquinone-Based Ionic Species for Nonaqueous Redox Flow Battery
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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9
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ACS Applied Materials and Interfaces, Volume 14, issue 15, pp. 17369–17377
Abstract
Nonaqueous redox flow batteries (NARFBs) have promise for large-scale energy storage with high energy density. Developing advanced active materials is of paramount importance to achieve high stability and energy density. Herein, we adopt the molecular engineering strategy by coupling tetraalkylammonium and an ethylene glycol ether side chain to design anthraquinone-based ionic active species. By adjusting the length of the ethylene glycol ether chain, an ionic active species 2-((9,10-dioxo-9,10-dihydroanthracen-1-yl)amino)-N-(2-(2-methoxyethoxy)ethyl)-(N,N-dimethylethan-1-aminium)-bis(trifluoromethylsulfonyl)imide (AQEG2TFSI) with high solubility and stability is obtained. Paired with a FcNTFSI cathode, the full battery provides an impressive cycling performance with discharge capacity retentions of 99.96% and 99.74% per cycle over 100 cycles with 0.1 and 0.4 M AQEG2TFSI, respectively.Description
Funding Information: The work was financially supported by the National Natural Science Foundation of China (21636007). Publisher Copyright: © 2022 American Chemical Society.
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Zhen, Y, Zhang, C & Li, Y 2022, 'Coupling Tetraalkylammonium and Ethylene Glycol Ether Side Chain To Enable Highly Soluble Anthraquinone-Based Ionic Species for Nonaqueous Redox Flow Battery', ACS Applied Materials and Interfaces, vol. 14, no. 15, pp. 17369–17377. https://doi.org/10.1021/acsami.2c01569