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Enhanced Capacity Retention of Li(3)V(2)(PO(4))(3)-Cathode-Based Lithium Metal Battery Using SiO(2)-Scaffold-Confined Ionic Liquid as Hybrid Solid-State Electrolyte

Li(3)V(2)(PO(4))(3) (LVP) is one of the candidates for high-energy-density cathode materials matching lithium metal batteries due to its high operating voltage and theoretical capacity. However, the inevitable side reactions of LVP with a traditional liquid-state electrolyte under high voltage, as w...

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Autores principales: Peng, Shihao, Luo, Jiakun, Liu, Wenwen, He, Xiaolong, Xie, Fang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343351/
https://www.ncbi.nlm.nih.gov/pubmed/37446558
http://dx.doi.org/10.3390/molecules28134896
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author Peng, Shihao
Luo, Jiakun
Liu, Wenwen
He, Xiaolong
Xie, Fang
author_facet Peng, Shihao
Luo, Jiakun
Liu, Wenwen
He, Xiaolong
Xie, Fang
author_sort Peng, Shihao
collection PubMed
description Li(3)V(2)(PO(4))(3) (LVP) is one of the candidates for high-energy-density cathode materials matching lithium metal batteries due to its high operating voltage and theoretical capacity. However, the inevitable side reactions of LVP with a traditional liquid-state electrolyte under high voltage, as well as the uncontrollable growth of lithium dendrites, worsen the cycling performance. Herein, a hybrid solid-state electrolyte is prepared by the confinement of a lithium-containing ionic liquid with a mesoporous SiO(2) scaffold, and used for a LVP-cathode-based lithium metal battery. The solid-state electrolyte not only exhibits a high ionic conductivity of 3.14 × 10(−4) S cm(−1) at 30 °C and a wide electrochemical window of about 5 V, but also has good compatibility with the LVP cathode material. Moreover, the cell paired with a solid-state electrolyte exhibits good reversibility and can realize a stable operation at a voltage of up to 4.8 V, and the discharge capacity is well-maintained after 100 cycles, which demonstrates excellent capacity retention. As a contrast, the cell paired with a conventional liquid-state electrolyte shows only an 87.6% discharge capacity retention after 100 cycles. In addition, the effectiveness of a hybrid solid-state electrolyte in suppressing dendritic lithium is demonstrated. The work presents a possible choice for the use of a hybrid solid-state electrolyte compatible with high-performance cathode materials in lithium metal batteries.
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spelling pubmed-103433512023-07-14 Enhanced Capacity Retention of Li(3)V(2)(PO(4))(3)-Cathode-Based Lithium Metal Battery Using SiO(2)-Scaffold-Confined Ionic Liquid as Hybrid Solid-State Electrolyte Peng, Shihao Luo, Jiakun Liu, Wenwen He, Xiaolong Xie, Fang Molecules Article Li(3)V(2)(PO(4))(3) (LVP) is one of the candidates for high-energy-density cathode materials matching lithium metal batteries due to its high operating voltage and theoretical capacity. However, the inevitable side reactions of LVP with a traditional liquid-state electrolyte under high voltage, as well as the uncontrollable growth of lithium dendrites, worsen the cycling performance. Herein, a hybrid solid-state electrolyte is prepared by the confinement of a lithium-containing ionic liquid with a mesoporous SiO(2) scaffold, and used for a LVP-cathode-based lithium metal battery. The solid-state electrolyte not only exhibits a high ionic conductivity of 3.14 × 10(−4) S cm(−1) at 30 °C and a wide electrochemical window of about 5 V, but also has good compatibility with the LVP cathode material. Moreover, the cell paired with a solid-state electrolyte exhibits good reversibility and can realize a stable operation at a voltage of up to 4.8 V, and the discharge capacity is well-maintained after 100 cycles, which demonstrates excellent capacity retention. As a contrast, the cell paired with a conventional liquid-state electrolyte shows only an 87.6% discharge capacity retention after 100 cycles. In addition, the effectiveness of a hybrid solid-state electrolyte in suppressing dendritic lithium is demonstrated. The work presents a possible choice for the use of a hybrid solid-state electrolyte compatible with high-performance cathode materials in lithium metal batteries. MDPI 2023-06-21 /pmc/articles/PMC10343351/ /pubmed/37446558 http://dx.doi.org/10.3390/molecules28134896 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Peng, Shihao
Luo, Jiakun
Liu, Wenwen
He, Xiaolong
Xie, Fang
Enhanced Capacity Retention of Li(3)V(2)(PO(4))(3)-Cathode-Based Lithium Metal Battery Using SiO(2)-Scaffold-Confined Ionic Liquid as Hybrid Solid-State Electrolyte
title Enhanced Capacity Retention of Li(3)V(2)(PO(4))(3)-Cathode-Based Lithium Metal Battery Using SiO(2)-Scaffold-Confined Ionic Liquid as Hybrid Solid-State Electrolyte
title_full Enhanced Capacity Retention of Li(3)V(2)(PO(4))(3)-Cathode-Based Lithium Metal Battery Using SiO(2)-Scaffold-Confined Ionic Liquid as Hybrid Solid-State Electrolyte
title_fullStr Enhanced Capacity Retention of Li(3)V(2)(PO(4))(3)-Cathode-Based Lithium Metal Battery Using SiO(2)-Scaffold-Confined Ionic Liquid as Hybrid Solid-State Electrolyte
title_full_unstemmed Enhanced Capacity Retention of Li(3)V(2)(PO(4))(3)-Cathode-Based Lithium Metal Battery Using SiO(2)-Scaffold-Confined Ionic Liquid as Hybrid Solid-State Electrolyte
title_short Enhanced Capacity Retention of Li(3)V(2)(PO(4))(3)-Cathode-Based Lithium Metal Battery Using SiO(2)-Scaffold-Confined Ionic Liquid as Hybrid Solid-State Electrolyte
title_sort enhanced capacity retention of li(3)v(2)(po(4))(3)-cathode-based lithium metal battery using sio(2)-scaffold-confined ionic liquid as hybrid solid-state electrolyte
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343351/
https://www.ncbi.nlm.nih.gov/pubmed/37446558
http://dx.doi.org/10.3390/molecules28134896
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