Fire-resistant and low-temperature self-healing bio-based hydrogel electrolytes based on peach gum polysaccharide/sisal nanofibers for flexible supercapacitors.

Zhang, Zuocai; Zhu, Nannan; Teng, Qijin; Wang, Jingwei; Wan, Xuejuan

Zhang, Zuocai; Zhu, Nannan; Teng, Qijin; Wang, Jingwei; Wan, Xuejuan.

Afiliación

Zhang Z; Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China; College of Physics and Optoelectronic Engineering, Shenzhen University,
Zhu N; Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China.
Teng Q; Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China.
Wang J; Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China.
Wan X; Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China. Electronic address: wanxj@szu.edu.cn.

Int J Biol Macromol ; 276(Pt 2): 133759, 2024 Sep.

Article en En | MEDLINE | ID: mdl-38986983

ABSTRACT

ABSTRACT

The introduction of flame retardancy and low-temperature self-healing capacities in hydrogel electrolytes are crucial for promoting the cycle stability and durability of the flexible supercapacitors in extreme environments. Herein, biomass-based dual-network hydrogel electrolyte (named PSBGL), was synthesized with borax crosslinked peach gum polysaccharide/sisal nanofibers composite, and its application in flexible supercapacitors was also investigated in detail. The dynamic cross-linking of the dual-network endows the PSBGL with excellent self-healing performance, enabling ultrafast self-healing within seconds at both room temperature and extreme low temperatures. The PSBGL bio-based hydrogel electrolyte can maintain the integrity of the carbon layer structure with limiting oxygen index of 56 % after 60 s of combustion under a flame gun. Additionally, the PSBGL exhibits high ionic conductivity (30.12 mS cm-1), good tensile strength (1.78 MPa), and robust adhesion to electrodes (1.15 MPa). The assembled supercapacitors demonstrate a high specific capacitance of 187.8 F g-1 at 0.5 A g-1, with 95.9 % capacitance retention rate after 10,000 cycles at room temperature. Importantly, even under extreme temperatures of 60 °C and -35 °C, the supercapacitors can also maintain high capacitance retention rates of 90.1 % and 86.5 % after 10,000 cycles. This work fills the gap between biomaterial design and high-performance flexible supercapacitors.

Asunto(s)

Capacidad Eléctrica; Electrólitos; Hidrogeles; Nanofibras; Gomas de Plantas; Nanofibras/química; Electrólitos/química; Hidrogeles/química; Gomas de Plantas/química; Prunus persica/química; Polisacáridos/química; Frío; Resistencia a la Tracción

Palabras clave

Bio-based hydrogel electrolyte; Flame retardant; Low-temperature self-healing

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hidrogeles / Capacidad Eléctrica / Electrólitos / Gomas de Plantas / Nanofibras Idioma: En Revista: Int J Biol Macromol Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos

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