Yongbiao Liu, Yang Song, Yongshang Zhang, Jiande Liu, Lin Li, Linsen Zhang, Lulu Du
{"title":"用于聚合物电解质的 g-C3N4@COF 异质结填料可实现快速锂+传输和高机械强度","authors":"Yongbiao Liu, Yang Song, Yongshang Zhang, Jiande Liu, Lin Li, Linsen Zhang, Lulu Du","doi":"10.1007/s11581-024-05796-8","DOIUrl":null,"url":null,"abstract":"<p>Solid polymer electrolytes (SPEs) show great promise for high-energy and high-safety lithium metal batteries. However, current SPEs suffer from low ionic conductivity and poor mechanical strength. Herein, the g-C<sub>3</sub>N<sub>4</sub>@COF heterojunction filler is constructed for SPEs for fast Li<sup>+</sup> transport and high Li<sup>+</sup> transference number. In addition, a robust 3D network is fabricated by using g-C<sub>3</sub>N<sub>4</sub>@COF heterojunction filler in order to further improve the mechanical robustness and electrochemical stability. As a consequence, the g-C<sub>3</sub>N<sub>4</sub>@COF-3D network/polymer electrolyte displays an ionic conductivity of 1.25×10<sup>−4</sup> S cm<sup>−1</sup> at 30 ℃, an electrochemical window of 5.0 V and the tensile strength of 8.613 MPa. Furthermore, the assembled LiFePO<sub>4</sub>//Li battery with the g-C<sub>3</sub>N<sub>4</sub>@COF-3D network/polymer electrolyte presents remarkable cycling stability with a capacity retention of 99.71% after 600 cycles. The above results indicate the great potential of the g-C<sub>3</sub>N<sub>4</sub>@COF-3D network/polymer electrolyte for advanced energy storage devices.</p>","PeriodicalId":599,"journal":{"name":"Ionics","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"g-C3N4@COF heterojunction filler for polymer electrolytes enables fast Li+ transport and high mechanical strength\",\"authors\":\"Yongbiao Liu, Yang Song, Yongshang Zhang, Jiande Liu, Lin Li, Linsen Zhang, Lulu Du\",\"doi\":\"10.1007/s11581-024-05796-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Solid polymer electrolytes (SPEs) show great promise for high-energy and high-safety lithium metal batteries. However, current SPEs suffer from low ionic conductivity and poor mechanical strength. Herein, the g-C<sub>3</sub>N<sub>4</sub>@COF heterojunction filler is constructed for SPEs for fast Li<sup>+</sup> transport and high Li<sup>+</sup> transference number. In addition, a robust 3D network is fabricated by using g-C<sub>3</sub>N<sub>4</sub>@COF heterojunction filler in order to further improve the mechanical robustness and electrochemical stability. As a consequence, the g-C<sub>3</sub>N<sub>4</sub>@COF-3D network/polymer electrolyte displays an ionic conductivity of 1.25×10<sup>−4</sup> S cm<sup>−1</sup> at 30 ℃, an electrochemical window of 5.0 V and the tensile strength of 8.613 MPa. Furthermore, the assembled LiFePO<sub>4</sub>//Li battery with the g-C<sub>3</sub>N<sub>4</sub>@COF-3D network/polymer electrolyte presents remarkable cycling stability with a capacity retention of 99.71% after 600 cycles. The above results indicate the great potential of the g-C<sub>3</sub>N<sub>4</sub>@COF-3D network/polymer electrolyte for advanced energy storage devices.</p>\",\"PeriodicalId\":599,\"journal\":{\"name\":\"Ionics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2024-09-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ionics\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s11581-024-05796-8\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ionics","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s11581-024-05796-8","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
g-C3N4@COF heterojunction filler for polymer electrolytes enables fast Li+ transport and high mechanical strength
Solid polymer electrolytes (SPEs) show great promise for high-energy and high-safety lithium metal batteries. However, current SPEs suffer from low ionic conductivity and poor mechanical strength. Herein, the g-C3N4@COF heterojunction filler is constructed for SPEs for fast Li+ transport and high Li+ transference number. In addition, a robust 3D network is fabricated by using g-C3N4@COF heterojunction filler in order to further improve the mechanical robustness and electrochemical stability. As a consequence, the g-C3N4@COF-3D network/polymer electrolyte displays an ionic conductivity of 1.25×10−4 S cm−1 at 30 ℃, an electrochemical window of 5.0 V and the tensile strength of 8.613 MPa. Furthermore, the assembled LiFePO4//Li battery with the g-C3N4@COF-3D network/polymer electrolyte presents remarkable cycling stability with a capacity retention of 99.71% after 600 cycles. The above results indicate the great potential of the g-C3N4@COF-3D network/polymer electrolyte for advanced energy storage devices.
期刊介绍:
Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.