Jump to main content
Jump to site search


Self-healing and shape-memory solid polymer electrolytes with high mechanical strength facilitated by a poly(vinyl alcohol) matrix

Author affiliations

Abstract

Self-healing and shape-memory solid polymer electrolytes (SSSPEs) based on poly(vinyl alcohol) (PVA) with ureidopyrimidinone (UPy) and poly(ethylene glycol) (PEG) units (PVA-UPy-PEG) were successfully fabricated by the reactions of different chain length epoxide functionalized-PEG and 2(6-isocyanatohexylaminocarbonylamino)-6-methyl-4[1H]-pyrimidinone (UPy-NCO) with the hydroxyl of PVA. The SSSPE with the longest PEG side chain (PVA-UPy-PEG750) exhibited good thermal stability until 254 °C, a low glass transition temperature (−44.8 °C), excellent self-healing and shape-memory performance, and high tensile stress. The PVA-UPy-PEG750 also showed a high ionic conductivity of 1.51 × 10−4 S cm−1 with an EO/Li+ ratio of 11 : 1 at 60 °C, wide electrochemical window (5.0 V vs. Li/Li+), and improved lithium-ion transference number (tLi+ = 0.34). Moreover, the lithium plating/stripping behavior of SSSPEs indicated the improved interfacial stability between the polymer electrolyte and the lithium metal electrode. The Li/PVA-UPy-PEG750/LiFePO4 cell exhibited a higher initial discharge capacity of 145 mA h g−1 and maintained a discharge capacity of 117 mA h g−1 after 150 cycles and a coulombic efficiency of 99% with 0.1C at 60 °C. The SSSPE could be a promising candidate as the all-solid-state polymer electrolyte for lithium-ion batteries.

Graphical abstract: Self-healing and shape-memory solid polymer electrolytes with high mechanical strength facilitated by a poly(vinyl alcohol) matrix

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Sep 2019, accepted on 05 Nov 2019 and first published on 06 Nov 2019


Article type: Paper
DOI: 10.1039/C9PY01406C
Polym. Chem., 2019, Advance Article

  •   Request permissions

    Self-healing and shape-memory solid polymer electrolytes with high mechanical strength facilitated by a poly(vinyl alcohol) matrix

    Y. H. Jo, B. Zhou, K. Jiang, S. Li, C. Zuo, H. Gan, D. He, X. Zhou and Z. Xue, Polym. Chem., 2019, Advance Article , DOI: 10.1039/C9PY01406C

Search articles by author

Spotlight

Advertisements