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Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery

[Image: see text] The existing in situ preparation methods of solid polymer electrolytes (SPEs) often require the use of a solvent, which would lead to a complicated process and potential safety hazards. Therefore, it is urgent to develop a solvent-free in situ method to produce SPEs with good proce...

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Autores principales: Bai, Lu, Wang, Peng, Li, Chengyu, Li, Na, Chen, Xiaoqi, Li, Yantao, Xiao, Jijun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10268638/
https://www.ncbi.nlm.nih.gov/pubmed/37332777
http://dx.doi.org/10.1021/acsomega.2c07349
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author Bai, Lu
Wang, Peng
Li, Chengyu
Li, Na
Chen, Xiaoqi
Li, Yantao
Xiao, Jijun
author_facet Bai, Lu
Wang, Peng
Li, Chengyu
Li, Na
Chen, Xiaoqi
Li, Yantao
Xiao, Jijun
author_sort Bai, Lu
collection PubMed
description [Image: see text] The existing in situ preparation methods of solid polymer electrolytes (SPEs) often require the use of a solvent, which would lead to a complicated process and potential safety hazards. Therefore, it is urgent to develop a solvent-free in situ method to produce SPEs with good processability and excellent compatibility. Herein, a series of polyaspartate polyurea-based SPEs (PAEPU-based SPEs) with abundant (PO)(x)(EO)(y)(PO)(z) segments and cross-linked structures were developed by systematically regulating the molar ratios of isophorone diisocyanate (IPDI) and isophorone diisocyanate trimer (tri-IPDI) in the polymer backbone and LiTFSI concentrations via an in situ polymerization method, which gave rise to good interfacial compatibility. Furthermore, the in situ-prepared PAEPU-SPE@D(15) based on the IPDI/tri-IPDI molar ratio of 2:1 and 15 wt % LiTFSI exhibits an improved ionic conductivity of 6.80 × 10(–5) S/cm at 30 °C and could reach 10(–4) orders of magnitude when the temperature was above 40 °C. The Li|LiFePO(4) battery based on PAEPU-SPE@D(15) had a wide electrochemical stability window of 5.18 V, demonstrating a superior interface compatibility toward LiFePO(4) and the lithium metal anode, exhibited a high discharge capacity of 145.7 mAh g(–1) at the 100th cycle and a capacity retention of 96.8%, and retained a coulombic efficiency of above 98.0%. These results showed that the PAEPU-SPE@D(15) system displayed a stable cycle performance, excellent rate performance, and high safety compared with PEO systems, indicating that the PAEPU-based SPE system may play a crucial role in the future.
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spelling pubmed-102686382023-06-16 Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery Bai, Lu Wang, Peng Li, Chengyu Li, Na Chen, Xiaoqi Li, Yantao Xiao, Jijun ACS Omega [Image: see text] The existing in situ preparation methods of solid polymer electrolytes (SPEs) often require the use of a solvent, which would lead to a complicated process and potential safety hazards. Therefore, it is urgent to develop a solvent-free in situ method to produce SPEs with good processability and excellent compatibility. Herein, a series of polyaspartate polyurea-based SPEs (PAEPU-based SPEs) with abundant (PO)(x)(EO)(y)(PO)(z) segments and cross-linked structures were developed by systematically regulating the molar ratios of isophorone diisocyanate (IPDI) and isophorone diisocyanate trimer (tri-IPDI) in the polymer backbone and LiTFSI concentrations via an in situ polymerization method, which gave rise to good interfacial compatibility. Furthermore, the in situ-prepared PAEPU-SPE@D(15) based on the IPDI/tri-IPDI molar ratio of 2:1 and 15 wt % LiTFSI exhibits an improved ionic conductivity of 6.80 × 10(–5) S/cm at 30 °C and could reach 10(–4) orders of magnitude when the temperature was above 40 °C. The Li|LiFePO(4) battery based on PAEPU-SPE@D(15) had a wide electrochemical stability window of 5.18 V, demonstrating a superior interface compatibility toward LiFePO(4) and the lithium metal anode, exhibited a high discharge capacity of 145.7 mAh g(–1) at the 100th cycle and a capacity retention of 96.8%, and retained a coulombic efficiency of above 98.0%. These results showed that the PAEPU-SPE@D(15) system displayed a stable cycle performance, excellent rate performance, and high safety compared with PEO systems, indicating that the PAEPU-based SPE system may play a crucial role in the future. American Chemical Society 2023-05-31 /pmc/articles/PMC10268638/ /pubmed/37332777 http://dx.doi.org/10.1021/acsomega.2c07349 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Bai, Lu
Wang, Peng
Li, Chengyu
Li, Na
Chen, Xiaoqi
Li, Yantao
Xiao, Jijun
Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery
title Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery
title_full Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery
title_fullStr Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery
title_full_unstemmed Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery
title_short Polyaspartate Polyurea-Based Solid Polymer Electrolyte with High Ionic Conductivity for the All-Solid-State Lithium-Ion Battery
title_sort polyaspartate polyurea-based solid polymer electrolyte with high ionic conductivity for the all-solid-state lithium-ion battery
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10268638/
https://www.ncbi.nlm.nih.gov/pubmed/37332777
http://dx.doi.org/10.1021/acsomega.2c07349
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