High-specific-energy aqueous supercapacitor with extended operating potential using trichloroacetic acid electrolyte

doi:10.1016/j.jpowsour.2022.231211

IR > 石油化工学院

	High-specific-energy aqueous supercapacitor with extended operating potential using trichloroacetic acid electrolyte
	Zhang, Deyi1,2 ; She, Wenna 1,2; Wang, Jingruo 1,2; Gao, Shiyao 1,2; Yang, Biao 1,2; Men, Xianxing 1,2; Wang, Kunjie1,2 ; Han, Zhiyong2 ; Chen, Xuefu2
	2022-04-15
发表期刊	Journal of Power Sources
ISSN	0378-7753
卷号	527
摘要	Extending the operating potential of electrolytes is an efficient strategy to improving the energy density of aqueous supercapacitors. In this work, trichloroacetic acid (TCA) is firstly developed to be an efficient acid electrolyte with extended operating potential to improve the energy density of the aqueous carbon-based supercapacitors. Meanwhile, a hierarchical porous carbon (HPC) with a high specific surface area of up to 3356 m2 g−1 derived from inedible fruits of flowering plums is prepared to match the newly developed TCA electrolyte. The prepared HPC exhibits a high specific capacitance of up to 460 F g−1 in the TCA electrolyte at 1 A g−1. The symmetric supercapacitor device based on the prepared HPC and TCA electrolyte can stably work at 1.3 V with excellent cycle durability, more than 95.4% of initial specific capacitance is reserved after 20000 cycles. Meanwhile, high specific energy of 18.8 Wh kg−1 is delivered at 203 W kg−1, which value is 2.38 times higher than the device using H2SO4 electrolyte. Energy density of the acidic aqueous supercapacitors can be dramatically improved by employing the newly developed TCA electrolyte while the large power density and excellent cycle durability of carbon-based supercapacitors can be well retained. © 2022 Elsevier B.V.
关键词	Capacitance Carbon Durability Electrolytes Porous materials Trichloroacetic acid Acid electrolytes Carbon-based Efficient strategy Energy density Hierarchical porous carbons High specific capacitances High specific surface area Specific capacitance Specific energy Symmetrics
DOI	10.1016/j.jpowsour.2022.231211
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000782290100003
出版者	Elsevier B.V.
EI入藏号	20220811702719
EI主题词	Supercapacitor
EI分类号	701.1 Electricity: Basic Concepts and Phenomena ; 702 Electric Batteries and Fuel Cells ; 704.1 Electric Components ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.1 Organic Compounds ; 951 Materials Science
来源库	WOS
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158045
专题	石油化工学院
通讯作者	Zhang, Deyi
作者单位	1.Lanzhou Univ Technol, Key Lab Low Carbon Energy & Chem Engn Gansu Prov, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China
第一作者单位	兰州理工大学; 石油化工学院
通讯作者单位	兰州理工大学; 石油化工学院
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Zhang, Deyi,She, Wenna,Wang, Jingruo,et al. High-specific-energy aqueous supercapacitor with extended operating potential using trichloroacetic acid electrolyte[J]. Journal of Power Sources,2022,527.
APA	Zhang, Deyi.,She, Wenna.,Wang, Jingruo.,Gao, Shiyao.,Yang, Biao.,...&Chen, Xuefu.(2022).High-specific-energy aqueous supercapacitor with extended operating potential using trichloroacetic acid electrolyte.Journal of Power Sources,527.
MLA	Zhang, Deyi,et al."High-specific-energy aqueous supercapacitor with extended operating potential using trichloroacetic acid electrolyte".Journal of Power Sources 527(2022).