A novel solid-state poly
A novel solid-state block copolymer (i.e., poly(urethane-b-siloxane, PUSR) electrolyte for lithium metal battery was designed and prepared. The structures of PUSR copolymer and PUSR-based solid polymer electrolytes (SPEs) were characterized by FT-IR and XPS, respectively; the physical properties, me...
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Veröffentlicht in: | Journal of materials science 2022-11, Vol.57 (43), p.20320 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A novel solid-state block copolymer (i.e., poly(urethane-b-siloxane, PUSR) electrolyte for lithium metal battery was designed and prepared. The structures of PUSR copolymer and PUSR-based solid polymer electrolytes (SPEs) were characterized by FT-IR and XPS, respectively; the physical properties, mechanical, thermal and electrochemical performances of the SPEs were also investigated. It was shown that the types of lithium salt and their contents in the SPEs had a significant impact on the performances of PUSR-based electrolytes. For most PUSR-based SPEs, the maximum fracture elongation ratio and maximum fracture intensity can be up to 170% and 5 MPa, respectively; and the thermal decomposition temperature is above 320 °C. For the PUSR-LiBOB40 SPE, its ion conductivity ([sigma]), Li ionic transference number ( [Formula omitted]) and electrochemical window reach 1.5 x 10.sup.-4S cm.sup.-1, 0.80 and over 5.0 V at room temperature, respectively. The evaluation on the lithium metal battery (LMB) assembled with PUSR-LiBOB40 electrolyte demonstrates that PUSR-based electrolyte was a promising and potential SPE candidate for lithium metal battery with high energy and power density, high stability and long-life. This work paves a new way for development of advanced SPE for LMBs. |
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ISSN: | 0022-2461 |
DOI: | 10.1007/s10853-022-07886-2 |