All Two-Dimensional Pseudocapacitive Sheet Materials for Flexible Asymmetric Solid-State Planar Microsupercapacitors with High Energy Density

doi:10.1021/acsnano.9b07183

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	All Two-Dimensional Pseudocapacitive Sheet Materials for Flexible Asymmetric Solid-State Planar Microsupercapacitors with High Energy Density
	Zhao, Fangfang 4; Liu, Weihong 4; Qiu, Tianlun 4; Gong, Wen-Bin 2; Ma, Wei 3; Li, Qingwen 2; Li, Feng 1; Geng, Fengxia 4
刊名	ACS NANO
	2020
卷号	14 期号:1 页码:603-610
关键词	two-dimensional materials MXene manganese oxides pseudocapacitive planar microsupercapactior
ISSN号	1936-0851
DOI	10.1021/acsnano.9b07183
通讯作者	Geng, Fengxia(gengfx@suda.edu.cn)
英文摘要	With the rapid development of portable devices and wireless protocols, miniaturized energy storage units have become an important prerequisite. Although in-plane microsupercapacitors are emerging as competitive candidate devices, their practical applications have been severely hindered by their low energy density. Here, employing pseudocapacitive active materials working in complementary voltage windows, namely, manganese oxide (MnO2) and titanium carbide (Ti3C2), both in the two-dimensional sheet morphology, a flexible asymmetric interdigitated solid-state microsupercapacitor was assembled. Profiting from the perfect voltage complementarity of the two types of sheets, the high exposure of electrochemically active sites and the maximized utilization of the sheets due to the planar ion transport, the designed device achieved excellent electrochemical performance even when using a gel electrolyte. In particular, the device obtained a high specific capacitance of 106 F g(-1) (295 mF cm(-2)), a wide potential window (2 V), an ultrahigh rate performance (retaining 83% even with a 20-fold in current density to 20 A g(-1)), an excellent cycling stability (87% retention after 10(4) cycles at 10 A g(-1)), and a competitive energy density of 58 W h kg(-1) (162 mu W h cm(-2)) that are even comparable to those of some microbatteries, while maintaining a high power density of 985 W kg(-1) (2.7 mW cm(-2)). Importantly, this outstanding electrochemical performance was also stably maintained under various bending conditions. These results indicate that two-dimensional pseudocapacitive sheet materials have a plethora of possibilities for constructing flexible and wearable devices.
资助项目	National Natural Science Foundation of China[51772201] ; Jiangsu Specially-Appointed Professor Program ; Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000510531500051
资助机构	National Natural Science Foundation of China ; Jiangsu Specially-Appointed Professor Program ; Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137153]
专题	金属研究所_中国科学院金属研究所
通讯作者	Geng, Fengxia
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, 398 Ruoshui Rd,Suzhou Ind Pk, Suzhou 215123, Peoples R China 3.Zhengzhou Univ, Sch Chem Engn, Res Ctr Heterogeneous Catalysis & Engn Sci, Zhengzhou 450001, Peoples R China 4.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Fangfang,Liu, Weihong,Qiu, Tianlun,et al. All Two-Dimensional Pseudocapacitive Sheet Materials for Flexible Asymmetric Solid-State Planar Microsupercapacitors with High Energy Density[J]. ACS NANO,2020,14(1):603-610.
APA	Zhao, Fangfang.,Liu, Weihong.,Qiu, Tianlun.,Gong, Wen-Bin.,Ma, Wei.,...&Geng, Fengxia.(2020).All Two-Dimensional Pseudocapacitive Sheet Materials for Flexible Asymmetric Solid-State Planar Microsupercapacitors with High Energy Density.ACS NANO,14(1),603-610.
MLA	Zhao, Fangfang,et al."All Two-Dimensional Pseudocapacitive Sheet Materials for Flexible Asymmetric Solid-State Planar Microsupercapacitors with High Energy Density".ACS NANO 14.1(2020):603-610.