Rigid-Flexible Coupling High Ionic Conductivity Polymer Electrolyte for an Enhanced Performance of LiMn2O4/Graphite Battery at Elevated Temperature
文献类型：期刊论文
| 作者 | Hu, Pu1,2; Duan, Yulong1; Hu, Deping1,2; Qin, Bingsheng1; Zhang, Jianjun1 ; Wang, Qingfu1; Liu, Zhihong1; Cui, Guanglei1; Chen, Liquan3
|
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2015-03-04 |
| 卷号 | 7期号:8页码:4720-4727 |
| 关键词 | Li-ion battery polymer electrolyte poly(ethyl alpha-cyanoacrylate) LiMn2O4 |
| 英文摘要 | LiMn2O4-based batteries exhibit severe capacity fading during cycling or storage in LiPF6-based liquid electrolytes, especially at elevated temperatures. Herein, a novel rigid-flexible gel polymer electrolyte is introduced to enhance the cyclability of LiMn2O4/graphite battery at elevated temperature. The polymer electrolyte consists of a robust natural cellulose skeletal incorporated with soft segment poly(ethyl alpha-cyanoacrylate). The introduction of the cellulose effectively overcomes the drawback of poor mechanical integrity of the gel polymer electrolyte. Density functional theory (DFT) calculation demonstrates that the poly(ethyl alpha-cyanoacrylate) matrices effectively dissociate the lithium salt to facilitate ionic transport and thus has a higher ionic conductivity at room temperature. Ionic conductivity of the gel polymer electrolyte is 3.3 x 10(-3) S cm(-1) at room temperature. The gel polymer electrolyte remarkably improves the cycling performance of LiMn2O4-based batteries, especially at elevated temperatures. The capacity retention after the 100th cycle is 82% at 55 degrees C, which is much higher than that of liquid electrolyte (1 M LiPF6 in carbonate solvents). The polymer electrolyte can significantly suppress the dissolution of Mn2+ from surface of LiMn2O4 because of strong interaction energy of Mn2+ with PECA, which was investigated by DFT calculation. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Science & Technology - Other Topics ; Materials Science |
| 关键词[WOS] | LI-ION ; SPINEL ELECTRODES ; CAPACITY LOSSES ; CELLS ; CATHODE ; DISSOLUTION ; DEPOSITION ; GRAPHITE ; BEHAVIOR ; OXIDES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000353005300034 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/6427]  |
| 专题 | 青岛生物能源与过程研究所_仿生能源与储能系统团队 |
| 作者单位 | 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao Ind Energy Storage Res Inst, Qingdao 266101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Pu,Duan, Yulong,Hu, Deping,et al. Rigid-Flexible Coupling High Ionic Conductivity Polymer Electrolyte for an Enhanced Performance of LiMn2O4/Graphite Battery at Elevated Temperature[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(8):4720-4727. |
| APA | Hu, Pu.,Duan, Yulong.,Hu, Deping.,Qin, Bingsheng.,Zhang, Jianjun.,...&Chen, Liquan.(2015).Rigid-Flexible Coupling High Ionic Conductivity Polymer Electrolyte for an Enhanced Performance of LiMn2O4/Graphite Battery at Elevated Temperature.ACS APPLIED MATERIALS & INTERFACES,7(8),4720-4727. |
| MLA | Hu, Pu,et al."Rigid-Flexible Coupling High Ionic Conductivity Polymer Electrolyte for an Enhanced Performance of LiMn2O4/Graphite Battery at Elevated Temperature".ACS APPLIED MATERIALS & INTERFACES 7.8(2015):4720-4727. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。