材料科学
法拉第效率
化学工程
聚酰胺
电解质
锂(药物)
酰胺锂
X射线光电子能谱
高分子化学
化学
有机化学
电极
物理化学
医学
对映选择合成
工程类
内分泌学
催化作用
作者
Changlin Liu,Yang He,Xiaowei An,Zhijun Wu,Xiaogang Hao,Qiang Zhao,Abuliti Abudula,Guoqing Guan
出处
期刊:Resources chemicals and materials
[Elsevier]
日期:2023-06-01
卷期号:2 (2): 167-176
标识
DOI:10.1016/j.recm.2023.03.003
摘要
A novel poly(ether block amide) (PEBA) based solid-state polymer electrolyte (SPE) was prepared using a casting method, in which 20wt% lithium (Li) bis-(trifluoromethanesulfonyl)imide (LiTFSI) and aluminum oxide (Al2O3) nanoparticles were used as the Li salt and solid plasticizer, respectively. In the case of addition of 3wt% Al2O3 nanoparticles, ion conductivity of the obtained PEBA 2533–20wt% LiTFSI-3wt% Al2O3 SPE was 3.57 × 10−5 S cm−1 at 25 °C. Furthermore, the Li symmetrical battery assembled with it showed excellent cycling stability (1000 h) at 0.1 mA cm−2. While, the assembled all-solid-state Li/PEBA 2533–20% LiTFSI-3wt% Al2O3/LiFePO4 (areal capacity: 0.15 mAh cm−2) battery maintained 94.9% of the maximal capacity (133.9 mAh g−[email protected] mA cm−2) at 60 °C even after 650 cycles with a superior average coulombic efficiency (CE) of 99.84%. By using X-ray photoelectron spectroscope (XPS), self-aggregation layer (SAL) of polyamide 12 (PA12) of PEBA 2533 was discovered, which should contribute to promoting the robustness of lithium fluoride (LiF) enriched solid-electrolyte interphase (SEI) layer. In addition, it is considered that the state of interface between SPE and cathode should be the cause of voltage polarization of the full cell.
科研通智能强力驱动
Strongly Powered by AbleSci AI