|
| Two-dimensional silica-modified polyethylene oxide solid polymer electrolyte to enhance the performance of lithium-ion batteries |
| Author Name | Affiliation | E-mail | | LUO Zhihong | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | SHI Yan | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | AN Jinyu | College of Civil Engineering, Guizhou University, Guiyang 550025, China | | | ZHENG Deyi | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | LI Long | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | | | OUYANG Quansheng | Advanced Batteries and Materials Engineering Research Center, Guizhou Light Industry Technical College, Guiyang 550025, China | | | SHI Bin | State Key Laboratory of Advanced Chemical Power Sources, Guizhou Meiling Power Supply Co., Ltd., Zunyi, Guizhou 563003, China | shibin401@sina.com | | SHAO Jiaojing | School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China | shaojiao_jing@163.com |
|
| Abstract: Herein, the positively charged two-dimensional (2D) porous silica (PSN+) nanosheet was obtained by modifying the 2D silica obtained from acid-etched 2D vermiculite, and then the PSN+ was used as the filler of polyethylene oxide (PEO)-based solid polymer electrolytes (SPEs). Given the abundant positive charges, PSN+ effectively binds with the anions dissociated from lithium salts, thereby promoting lithium-ion transport and achieving a decent lithium-ion transference number. At 50℃, the PSN+-based SPEs demonstrated a higher ionic conductivity of 7.5×10-5 S·cm-1, lithium-ion transference number of 0.30, and a stable voltage window of 4.41 V. Consequently, the asassembled LiFePO4||Li batteries delivered excellent initial discharge specific capacity of 155.7 mAh·g-1 at 0.2C with 97.1% capacity retention after 100 cycles at 50℃. |
| Keywords: lithium-ion battery solid polymer electrolyte filler two-dimensional silica |
| Hits: 151 |
| Download times: 87 |
| LUO Zhihong,SHI Yan,AN Jinyu,ZHENG Deyi,LI Long,OUYANG Quansheng,SHI Bin,SHAO Jiaojing.Two-dimensional silica-modified polyethylene oxide solid polymer electrolyte to enhance the performance of lithium-ion batteries[J].Chinese Journal of Inorganic Chemistry,2024,40(5):1005-1014. |
| View Full Text View/Add Comment Download reader |
|
|
|
|
|
|
|
|
