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Kinetic regulation of MXene with water-in-LiCl electrolyte for high-voltage micro-supercapacitors
Zhu, Yuanyuan1; Zheng, Shuanghao1,5; Lu, Pengfei1; Ma, Jiaxin1,6; Das, Pratteek1,6; Su, Feng1,6; Cheng, Hui-Ming2,3,4; Wu, Zhong-Shuai1,5
Corresponding AuthorCheng, Hui-Ming(cheng@imr.ac.cn) ; Wu, Zhong-Shuai(wuzs@dicp.ac.cn)
2022-02-23
Source PublicationNATIONAL SCIENCE REVIEW
ISSN2095-5138
Pages9
AbstractHigh-voltage aqueous MXene symmetric planar micro-supercapacitors based on water-in-LiCl electrolyte were developed, which presented a record operating voltage of 1.6 V and a wide temperature range of -40 degrees C to 60 degrees C. MXenes are one of the key materials for micro-supercapacitors (MSCs), integrating miniaturized energy-storage components with microelectronics. However, the energy densities of MSCs are greatly hampered by MXenes' narrow working potential window (typically <= 0.6 V) in aqueous electrolytes. Here, we report the fabrication of high-voltage MXene-MSCs through the efficient regulation of reaction kinetics in 2D Ti3C2Tx MXene microelectrodes using a water-in-LiCl (WIL, 20 m LiCl) salt gel electrolyte. Importantly, the intrinsic energy-storage mechanism of MXene microelectrodes in WIL, which is totally different from traditional electrolytes (1 m LiCl), was revealed through insitu and exsitu characterizations. We validated that the suppression of MXene oxidation at high anodic potential occurred due to the high content of WIL regulating anion intercalation in MXene electrodes, which effectively broadened the voltage window of MXene-MSCs. Remarkably, the symmetric planar MXene-MSCs presented a record operating voltage of 1.6 V, resulting in an exceptionally high volumetric energy density of 31.7 mWh cm(-3). With the ultra-high ionic conductivity (69.5 mS cm(-1)) and ultralow freezing point (-57 degrees C) of the WIL gel electrolyte, our MSCs could be operated in a wide temperature range of -40 to 60 degrees C, and worked for a long duration even at -40 degrees C, demonstrative of its practicality in extreme environments.
KeywordMXene micro-supercapacitors water-in-LiCl aqueous high voltage wide temperature
Funding OrganizationNational Natural Science Foundation of China ; Liao Ning Revitalization Talents Program ; Liaoning BaiQianWan Talents Program ; Central Government of Liaoning Province Guides the Funds for Local Science and Technology Development ; Dalian Innovation Support Plan for High Level Talents ; Dalian National Laboratory for Clean Energy (DNL) ; DNL Cooperation Fund, CAS ; Dalian Institute of Chemical Physics (DICP) ; Dalian National Laboratory for Clean Energy ; China Postdoctoral Science Foundation ; Yulin University ; Chinese Academy of Sciences (CAS)
DOI10.1093/nsr/nwac024
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[22005297] ; National Natural Science Foundation of China[22125903] ; National Natural Science Foundation of China[51872283] ; National Natural Science Foundation of China[22075279] ; National Natural Science Foundation of China[22005298] ; Liao Ning Revitalization Talents Program[XLYC1807153] ; Liaoning BaiQianWan Talents Program ; Central Government of Liaoning Province Guides the Funds for Local Science and Technology Development[2021JH6/10500112] ; Dalian Innovation Support Plan for High Level Talents[2019RT09] ; Dalian National Laboratory for Clean Energy (DNL) ; DNL Cooperation Fund, CAS[DNL201912] ; DNL Cooperation Fund, CAS[DNL201915] ; DNL Cooperation Fund, CAS[DNL202016] ; DNL Cooperation Fund, CAS[DNL202019] ; Dalian Institute of Chemical Physics (DICP)[DICP ZZBS201708] ; Dalian Institute of Chemical Physics (DICP)[DICP ZZBS201802] ; Dalian Institute of Chemical Physics (DICP)[DICP I2020032] ; Dalian National Laboratory for Clean Energy[2021002] ; Dalian National Laboratory for Clean Energy[2021009] ; China Postdoctoral Science Foundation[2020M680995] ; China Postdoctoral Science Foundation[2019M661141] ; Yulin University ; Chinese Academy of Sciences (CAS)
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000785607100001
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172768
Collection中国科学院金属研究所
Corresponding AuthorCheng, Hui-Ming; Wu, Zhong-Shuai
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Shenzhen Inst Adv Technol, Fac Mat Sci & Engn, Inst Technol Carbon Neutral, Shenzhen 518055, Peoples R China
4.Tsinghua Univ, Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China
5.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Yuanyuan,Zheng, Shuanghao,Lu, Pengfei,et al. Kinetic regulation of MXene with water-in-LiCl electrolyte for high-voltage micro-supercapacitors[J]. NATIONAL SCIENCE REVIEW,2022:9.
APA Zhu, Yuanyuan.,Zheng, Shuanghao.,Lu, Pengfei.,Ma, Jiaxin.,Das, Pratteek.,...&Wu, Zhong-Shuai.(2022).Kinetic regulation of MXene with water-in-LiCl electrolyte for high-voltage micro-supercapacitors.NATIONAL SCIENCE REVIEW,9.
MLA Zhu, Yuanyuan,et al."Kinetic regulation of MXene with water-in-LiCl electrolyte for high-voltage micro-supercapacitors".NATIONAL SCIENCE REVIEW (2022):9.
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