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Incorporating 2D gamma-Al2O3 nanosheets into the flexible PEO-based solid electrolyte for lithium metal batteries

文献类型：期刊论文

作者Song, Jiechen1,2,3; Xu, Yuxing1,6; Zhou, Yuncheng1,2; Wang, Pengfei1; Feng, Hailan1; Yang, Jun1; Zhuge, Fuchang4; Tan, Qiangqiang1,5,6
刊名ELECTROCHIMICA ACTA
出版日期2023
卷号437页码:13
关键词2D Li-ion transport channels PEO-based polymer electrolytes Lithium metal batteries
ISSN号0013-4686
DOI10.1016/j.electacta.2022.141504
英文摘要Solid polymer electrolytes using polyethylene oxide (PEO) are promising for boosting the safety of lithium metal batteries (LMBs), but suffer from low ionic conductivity due to high crystallinity and poor segment motion of PEO. Adding plasticizers like succinonitrile (SN) is one of the solutions to improve the ionic conductivity of PEO, but it sacrifices the cycle performances of LMBs. In addition, the ability to conduct lithium ions of PEO-SN matrixes is yet to be improved. Herein, two-dimensional gamma-Al2O3 nanosheets are first introduced into the PEO-SN matrix to facilitate the long-range migration of lithium ions and improve the electrochemical properties of PEO-SN matrix, realizing the new design of traditional materials. The mechanism between gamma-Al2O3 nanosheets and the polymer matrix is discussed. The addition of gamma-Al2O3 nanosheets improves the ionic conductivities and cycle performances of PEO-LiTFSI-SN (PLS) electrolytes. In specific, the ionic conductivity at 25 degrees C of the PEO-LiTFSI-SN-Al2O3 nanosheet (PLS-A) electrolyte is up to 2.02 x 10-4 S cm-1. Meanwhile, the electrochemical properties of Li/PLS-A/LiFePO4 are tested, with a low overpotential change of 0.06 V, coulombic efficiency above 99.6%, and capacity retention of 95% at 0.5C and 60 degrees C after 50 cycles. The solid electrolyte system provides a feasible strategy for the application of 2D nanofillers in PEO polymer electrolytes.
WOS关键词NANOCOMPOSITE POLYMER ELECTROLYTES ; ANISOTROPIC ION-TRANSPORT ; TOTAL-ENERGY CALCULATIONS ; STATE ; CONDUCTIVITY ; PERFORMANCE
资助项目Open Research Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2021-D-13] ; National Natural Science Foundation of China[51902310] ; Beijing Natural Science Foundation[2222030] ; State Key Laboratory of Multiphase complex systems[MPCS-2021-A-04]
WOS研究方向Electrochemistry
语种英语
WOS记录号WOS:000906888100001
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Open Research Fund of State Key Laboratory of Multiphase Complex Systems ; National Natural Science Foundation of China ; Beijing Natural Science Foundation ; State Key Laboratory of Multiphase complex systems
源URL[http://ir.ipe.ac.cn/handle/122111/56351]  
专题中国科学院过程工程研究所
通讯作者Zhuge, Fuchang; Tan, Qiangqiang
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Hebei Technol Innovat Ctr Adv Energy Mat, Langfang 065001, Peoples R China
4.Gansu Daxiang Energy Technol Co Ltd, Baiyin 730913, Gansu, Peoples R China
5.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
6.Langfang Green Ind Technol Ctr, Langfang Econ & Tech Dev Zone, Langfang 065001, Peoples R China
推荐引用方式
GB/T 7714		 Song, Jiechen,Xu, Yuxing,Zhou, Yuncheng,et al. Incorporating 2D gamma-Al2O3 nanosheets into the flexible PEO-based solid electrolyte for lithium metal batteries[J]. ELECTROCHIMICA ACTA,2023,437:13.
APA Song, Jiechen.,Xu, Yuxing.,Zhou, Yuncheng.,Wang, Pengfei.,Feng, Hailan.,...&Tan, Qiangqiang.(2023).Incorporating 2D gamma-Al2O3 nanosheets into the flexible PEO-based solid electrolyte for lithium metal batteries.ELECTROCHIMICA ACTA,437,13.
MLA Song, Jiechen,et al."Incorporating 2D gamma-Al2O3 nanosheets into the flexible PEO-based solid electrolyte for lithium metal batteries".ELECTROCHIMICA ACTA 437(2023):13.

入库方式： OAI收割

来源：过程工程研究所

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