A Localized High-Concentration Electrolyte with Optimized Solvents and Lithium Difluoro(oxalate)borate Additive for Stable Lithium Metal Batteries | |
Yu, Lu2; Chen, Shuru2; Lee, Hongkyung2; Zhang, Linchao2,3; Engelhard, Mark H.1; Li, Qiuyan2; Jiao, Shuhong2; Liu, Jun2; Xu, Wu2; Zhang, Ji-Guang2 | |
刊名 | ACS ENERGY LETTERS |
2018-09-01 | |
期号 | 9页码:2059-2067 |
ISSN号 | 2380-8195 |
DOI | 10.1021/acsenergylett.8b00935 |
英文摘要 | We report a carbonate-based localized high-concentration electrolyte (LHCE) with a fluorinated ether as a diluent for 4-V class lithium metal batteries (LMBs), which enables dendrite-free Li deposition with a high Li Coulombic efficiency (similar to 98.5%) and much better cycling stability for Li metal anodes than previously reported dimethyl carbonate-based LHCEs at lean electrolyte conditions. This electrolyte consists of 1.2 M lithium bis(fluorosulfonyl)imide (LiFSI) in a cosolvent mixture of ethylene carbonate (EC)/ethyl methyl carbonate (EMC) with bis(2,2,2-trifluoroethyl) ether (BTFE) as the diluent and 0.15 M lithium difluoro(oxalate)borate (LiDFOB) as an additive. A Li parallel to LiNi1/3Mn1/3 Co1/3O2 battery with a high areal loading of 3.8 mAh cm(-2) maintains 84% of its initial capacity after 100 cycles. The enhanced stability can be attributed to the robust solid-electrolyte interface (SEI) layer formed on the Li metal decomposition of LiDFOB salt and EC solvent molecules. |
资助项目 | Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy (DOE) through the Advanced Battery Materials Research (BMR) program (Battery500 Consortium)[DE-AC02-05CH11231] ; DOE's Office of Biological and Environmental Research ; DOE[DE-AC05-76RL01830] ; DOE Vehicle Technologies Program within Applied Battery Research (ABR) for Transportation Program |
WOS关键词 | ION BATTERIES ; ANODE ; DIFLUORO(OXALATO)BORATE ; CAPACITY ; SALT |
WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science |
语种 | 英语 |
出版者 | AMER CHEMICAL SOC |
WOS记录号 | WOS:000445052900006 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/38852] |
专题 | 合肥物质科学研究院_中科院固体物理研究所 |
通讯作者 | Xu, Wu; Zhang, Ji-Guang |
作者单位 | 1.Pacific Northwest Natl Lab, Environm Mol Sci Lab, 3335 Innovat Blvd, Richland, WA 99354 USA 2.Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99354 USA 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230026, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Yu, Lu,Chen, Shuru,Lee, Hongkyung,et al. A Localized High-Concentration Electrolyte with Optimized Solvents and Lithium Difluoro(oxalate)borate Additive for Stable Lithium Metal Batteries[J]. ACS ENERGY LETTERS,2018(9):2059-2067. |
APA | Yu, Lu.,Chen, Shuru.,Lee, Hongkyung.,Zhang, Linchao.,Engelhard, Mark H..,...&Zhang, Ji-Guang.(2018).A Localized High-Concentration Electrolyte with Optimized Solvents and Lithium Difluoro(oxalate)borate Additive for Stable Lithium Metal Batteries.ACS ENERGY LETTERS(9),2059-2067. |
MLA | Yu, Lu,et al."A Localized High-Concentration Electrolyte with Optimized Solvents and Lithium Difluoro(oxalate)borate Additive for Stable Lithium Metal Batteries".ACS ENERGY LETTERS .9(2018):2059-2067. |
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