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| Rational design of a pre-lithiated ionogel membrane with enhanced safety and electrochemical performances | |
| Xing, Chunxian1; Li, Bosen1,2; Zhang, Jiahe1; Su, Peipei1,2; Pan, Shanshan1,2; Cao, Yong3; Gao, Erping3; Zhang, Haitao1,2 | |
| 2021-11-01 | |
| Source Publication | MATERIALS CHEMISTRY AND PHYSICS
 |
| ISSN | 0254-0584 |
| Volume | 272Pages:7 |
| Abstract | Hard carbon is hard to be commercialized due to its low initial efficiency. The irreversible capacity loss usually consumes numerous lithium ions from the electrolyte, leading to an unexpected energy density attenuation. Therefore, effective pre-lithiation methods are extremely desired. Herein, a striking and simple pre-lithiated method was proposed through introducing lithium metal passivation powder into ionogel electrolyte as lithium source. Safety features and electrochemical performances of as prepared ionogel electrolyte were studied systemically. Notably, our work found that the incorporation of lithium metal powder could effectively improve the ionic conductivity, reduce the reactive activation energy, and supplement the lithium-ion loss of electrolyte. The pre-lithiated electrolyte could stand an ultra-high operating potential window of 4.2 V in lithium-ion capacitors. Moreover, our study reveals that the dissociation of the ionic clusters within the ionogel electrolyte favors the electrochemical performances at high temperature. Our optimized device delivered a maximum energy density of 138 Wh kg-1 and a maximum power density of 19339.4 W kg-1 at 60 degrees C. This simple prelithiation method will significantly benefit the rational fabrication of lithium-ion capacitors with high energy density and reasonable safety. |
| Keyword | Pre-lithiation Ionogel electrolyte Lithium-ion capacitors Safety Ionic liquid |
| DOI | 10.1016/j.matchemphys.2021.124975 |
| Language | 英语 |
| WOS Keyword | LITHIUM-ION CAPACITORS ; POLYMER ELECTROLYTE ; HARD CARBON ; NEGATIVE ELECTRODE ; ANODE MATERIALS ; GRAPHITE ANODE ; LIQUID ; COMPOSITE ; BATTERIES ; ENERGY |
| Funding Project | National Key Research and Development Program of China[2016YFB0100304] ; National Natural Science Foundation of China[21878308] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Funding Organization | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| WOS ID | WOS:000682345400003 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/49612 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Zhang, Haitao |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Hefei Got High Tech Power Energy Co Ltd, 599 Daihe Rd, Hefei, Anhui, Peoples R China |
| Recommended Citation GB/T 7714 | Xing, Chunxian,Li, Bosen,Zhang, Jiahe,et al. Rational design of a pre-lithiated ionogel membrane with enhanced safety and electrochemical performances[J]. MATERIALS CHEMISTRY AND PHYSICS,2021,272:7. |
| APA | Xing, Chunxian.,Li, Bosen.,Zhang, Jiahe.,Su, Peipei.,Pan, Shanshan.,...&Zhang, Haitao.(2021).Rational design of a pre-lithiated ionogel membrane with enhanced safety and electrochemical performances.MATERIALS CHEMISTRY AND PHYSICS,272,7. |
| MLA | Xing, Chunxian,et al."Rational design of a pre-lithiated ionogel membrane with enhanced safety and electrochemical performances".MATERIALS CHEMISTRY AND PHYSICS 272(2021):7. |
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