Cross-linked polyaniline for production of long lifespan aqueous iron||organic batteries with electrochromic properties
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Original language | English |
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Article number | 3117 |
Journal / Publication | Nature Communications |
Volume | 14 |
Online published | 30 May 2023 |
Publication status | Published - 2023 |
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DOI | DOI |
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85160620391&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(67ac3d2a-588a-442d-8da9-56740b47a9ea).html |
Abstract
Aqueous iron batteries are appealing candidates for large-scale energy storage due to their safety and low-cost aspects. However, the development of aqueous Fe batteries is hindered by their inadequate long-term cycling stability. Here, we propose the synthesis and application as positive electrode active material of cross-linked polyaniline (C-PANI). We use melamine as the crosslinker to improve the electronical conductivity and electrochemical stability of the C-PANI. Indeed, when the C-PANI is tested in combination with a Fe metal negative electrode and 1 M iron trifluoromethanesulfonate (Fe(TOF)2) electrolyte solution, the coin cell can deliver a specific capacity of about 110 mAh g−1 and an average discharge voltage of 0.55 V after 39,000 cycles at 25 A g−1 with a test temperature of 28 °C ± 1 °C. Furthermore, mechanistic studies suggest that Fe2+ ions are bonded to TOF− anions to form positively charged complexes Fe(TOF)+, which are stored with protons in the C-PANI electrode structures. Finally, we also demonstrate the use of C-PANI in combination with a polymeric hydrogel electrolyte to produce a flexible reflective electrochromic lab-scale iron battery prototype. © 2023, The Author(s).
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Citation Format(s)
Cross-linked polyaniline for production of long lifespan aqueous iron||organic batteries with electrochromic properties. / Lv, Haiming; Wei, Zhiquan; Han, Cuiping et al.
In: Nature Communications, Vol. 14, 3117, 2023.
In: Nature Communications, Vol. 14, 3117, 2023.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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