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Construction of Alkaline Gel Polymer Electrolytes with a Double Cross-Linked Network for Flexible Zinc–Air Batteries AITranslate

Qilu University of Technology (Shandong Academy of Sciences); Qilu University of Technology (Shandong Academy of Sciences); Qilu University of Technology (Shandong Academy of Sciences); Qilu University of Technology (Shandong Academy of Sciences); Qilu University of Technology (Shandong Academy of Sciences); Qilu University of Technology (Shandong Academy of Sciences); Qilu University of Technology (Shandong Academy of Sciences); Qilu University of Technology (Shandong Academy of Sciences);Qingdao University of science and technology
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Publisher: ACS
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Abstract AITranslate

Flexible zinc–air batteries have broad potential as the next generation of energy storage component in wearable electronic devices. However, the mechanical performance and ionic conductivity of electrolytes are urgent issues that hinder the commercial application of flexible batteries. Herein, the alkaline gel polymer electrolyte (AGPE) with a double-network structure is developed, which consists of a covalently cross-linked polyacrylamide (PAM) by in situ polymerization and a physically cross-linked poly(vinyl alcohol) (PVA) by the freeze–thaw method. The freestanding PVA/N-PAM/KOH gel electrolyte demonstrates high ionic conductivity (309.9 mS cm–1) and excellent mechanical toughness (0.69 MJ m–3), benefiting from the synergistic effect of the double cross-linked system and hydrogen bonds. Meanwhile, the assembled ″sandwich″-type zinc–air battery presents excellent power density (40.43 mW cm–2), long-term cycle life (113 cycles), super-high-energy efficiency (70.2%), and stable discharge plateau. Impressively, the PVA/N-PAM/KOH-based batteries attached to the human body surface are reliably capable of powering light-emitting diodes.

KeyWords AITranslate

double crosslinked network freeze−thaw method high conductivity mechanical toughness zinc−air battery
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Basic Information:

DOI:https://doi.org/10.1021/acsapm.3c00270

Chinese Library Classification Number:

Citation Information:

Flexible zinc–air batteries have broad potential as the next generation of energy storage component in wearable electronic devices. However, the mechanical performance and ionic conductivity of electrolytes are urgent issues that hinder the commercial application of flexible batteries. Herein, the alkaline gel polymer electrolyte (AGPE) with a double-network structure is developed, which consists of a covalently cross-linked polyacrylamide (PAM) by in situ polymerization and a physically cross-linked poly(vinyl alcohol) (PVA) by the freeze–thaw method. The freestanding PVA/N-PAM/KOH gel electrolyte demonstrates high ionic conductivity (309.9 mS cm–1) and excellent mechanical toughness (0.69 MJ m–3), benefiting from the synergistic effect of the double cross-linked system and hydrogen bonds. Meanwhile, the assembled ″sandwich″-type zinc–air battery presents excellent power density (40.43 mW cm–2), long-term cycle life (113 cycles), super-high-energy efficiency (70.2%), and stable discharge plateau. Impressively, the PVA/N-PAM/KOH-based batteries attached to the human body surface are reliably capable of powering light-emitting diodes.

quote

GB/T 7714-2015 [1] Guotao Zhang, Xiaoxia Cai, Cong Li, et al. ACS Applied Polymer Materials, 2023(5). DOI:10.1021/acsapm.3c00270.
MLA [1] Guotao Zhang, et al., ACS Applied Polymer Materials, no. 5, 2023, https://doi.org/10.1021/acsapm.3c00270.
APA [1] Guotao Zhang, Xiaoxia Cai, Cong Li, Jinshui Yao, Weiliang Liu, Congde Qiao, Guangda Li, Qiang Wang, & Jingjie Han. (2023). ACS Applied Polymer Materials(5). https://doi.org/10.1021/acsapm.3c00270
IEEE [1] Guotao Zhang, Xiaoxia Cai, Cong Li, Jinshui Yao, Weiliang Liu, Congde Qiao, Guangda Li, Qiang Wang, and Jingjie Han, ACS Applied Polymer Materials, no. 5, 2023, doi: 10.1021/acsapm.3c00270. keywords: {double crosslinked network;freeze−thaw method;high conductivity;mechanical toughness;zinc−air battery}