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| Ultra-stable high voltage lithium metal batteries enabled by solid garnet electrolyte surface-engineered with a grafted aromatics layer | |
| Li, Jin1,2,3; Zhang, Haitao1,2,3,4; Cui, Yingyue1,2,3; Da, Haoran1,2,3; Cai, Yingjun1,3; Zhang, Suojiang1,3 | |
| 2022-12-15 | |
| Source Publication | CHEMICAL ENGINEERING JOURNAL
 |
| ISSN | 1385-8947 |
| Volume | 450Pages:10 |
| Abstract | The instability and Li2CO3 contaminants of garnet-type electrolytes exposed to air could lead to in its poor interfacial contact with the lithium metal. Generally, the thermal treatment temperature of garnet should overpass 700 & DEG;C to remove surface contaminants. Herein, we report a low temperature method in which con-taminants are converted to the aromatics lithiophilic interface via a simple azo reaction at 60 & DEG;C. The free radicals formed by the decomposition of the azo compound are grafted onto garnet, thereby the garnet compatibility in lithium metal batteries (LMBs) are improved effectively. The reaction mechanism is confirmed by density functional theory calculations, comprehensive electrochemical characterizations, and applying designed azo compounds. The modified garnet membrane shows a high mechanical property and reduced interfacial impedance, high Young's modulus of 169.99 GPa and ionic conductivity of 0.457 mS/cm at 20?. Subsequently, combined XPS depth etching and TOF-SIMS characterizations show that the interfacial layer is composed of a rich C-F bond surface layer and a rich-LiF bottom layer, enabling rapid transport and uniform deposition of lithium ions. Moreover, the superior cycling stability facilitated by modified composite electrolyte is demonstrated in Li/LiFePO4 and Li/LiNi0.5Co0.2Mn0.3O2 full batteries. This new conversion chemistry via azo compound provides a practical solution for achieving high-energy solid-state LMBs. |
| Keyword | Solid-state electrolytes Surface engineering Azo compound Free radical Conversion chemistry |
| DOI | 10.1016/j.cej.2022.138457 |
| Language | 英语 |
| WOS Keyword | INTERFACIAL RESISTANCE ; POLYMER ELECTROLYTE ; STRATEGIES ; CONDUCTION ; EFFICIENT ; PROGRESS |
| Funding Project | National Key Research and Development Program of China[2019YFA0705602] ; Science and Technology Service Network Initiative program of CAS[KFJ-STS-QYZD-2021-02-002] ; Zhengzhou major Science and tech- nology projects[2019CXZX0074] ; Key Science and Technology Special Project of Henan Province[201111311400] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Environmental ; Engineering, Chemical |
| Funding Organization | National Key Research and Development Program of China ; Science and Technology Service Network Initiative program of CAS ; Zhengzhou major Science and tech- nology projects ; Key Science and Technology Special Project of Henan Province |
| WOS ID | WOS:000861884200005 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/54757 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Cai, Yingjun; Zhang, Suojiang |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 4.Zhengzhou Inst Emerging Ind Technol, Henan Key Lab Energy Storage Mat & Proc, Zhengzhou 450003, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Jin,Zhang, Haitao,Cui, Yingyue,et al. Ultra-stable high voltage lithium metal batteries enabled by solid garnet electrolyte surface-engineered with a grafted aromatics layer[J]. CHEMICAL ENGINEERING JOURNAL,2022,450:10. |
| APA | Li, Jin,Zhang, Haitao,Cui, Yingyue,Da, Haoran,Cai, Yingjun,&Zhang, Suojiang.(2022).Ultra-stable high voltage lithium metal batteries enabled by solid garnet electrolyte surface-engineered with a grafted aromatics layer.CHEMICAL ENGINEERING JOURNAL,450,10. |
| MLA | Li, Jin,et al."Ultra-stable high voltage lithium metal batteries enabled by solid garnet electrolyte surface-engineered with a grafted aromatics layer".CHEMICAL ENGINEERING JOURNAL 450(2022):10. |
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