Ionic liquid pre-intercalated MXene films for ionogel-based flexible micro-supercapacitors with high volumetric energy density
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2019Author:
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Nicolosi, V., Bao, X., Zheng, S., Zhang, C., Zhou, F., Dong, Y., Shi, X., Wu, Z.-S., Ionic liquid pre-intercalated MXene films for ionogel-based flexible micro-supercapacitors with high volumetric energy density, Journal of Materials Chemistry A, 2019, 7, 16, 9478-9485Download Item:
Abstract:
MXenes are emerging as a very promising electrode material of high-performance micro-supercapacitors (MSCs) for microscale electronics. However, MXene based MSCs (M-MSCs) reported so far exhibit low areal (≤10 μW h cm−2) and volumetric (≤20 mW h cm−3) energy densities due to their narrow working voltage in aqueous systems (0.6–1.0 V). Herein, we report for the first time the construction of high-voltage and high-energy flexible ionogel-based M-MSCs with interdigital microelectrodes of ionic liquid pre-intercalated MXene films. Benefitting from the pre-intercalation of ionic liquid, the as-fabricated M-MSCs, working at 3 V in 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIMBF4), exhibited high areal and volumetric energy densities of 13.9 μW h cm−2 and 43.7 mW h cm−3, respectively, both of which are among the highest values for the reported M-MSCs. Moreover, all-solid-state M-MSCs using ionogel electrolytes displayed exceptional flexibility without capacitance loss under various deformation conditions and seamless integration free of metal-based interconnections for boosting voltage output. Therefore, such high-energy M-MSCs hold great potential for direct integration of flexible and miniature electronics.
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064444187&doi=10.1039%2fc9ta02190f&partnerID=40&md5=c942a73ee53706c4afa5110deaa01aa3http://hdl.handle.net/2262/96011
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Author: Nicolosi, Valeria; Bao, Xinhe; Zheng, Shuanghao; Zhang, Chuanfang (John); Zhou, Feng; Dong, Yanfeng; Shi, Xiaoyu; Wu, Zhong-Shuai
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064444187&doi=10.1039%2fc9ta02190f&partnerID=40&md5=c942a73ee53706c4afa5110deaa01aa3http://hdl.handle.net/2262/96011
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Journal of Materials Chemistry A;7;
16;
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MXenes, Capacitance, Electrochemical electrodes, Flexible electronics, Ionic liquids, Microelectrodes, SupercapacitorDOI:
10.1039/c9ta02190fMetadata
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