3D hierarchical porous carbon derived from direct carbonization and in-situ chemical activation of potatoes toward high-performance supercapacitors

doi:10.1088/2053-1591/ab4d36

	3D hierarchical porous carbon derived from direct carbonization and in-situ chemical activation of potatoes toward high-performance supercapacitors
	Lu, Chun 1; Qian, Xue-Zhi 1; Zhu, Hao-Yan 1; Hu, Yu-Xia 3; Zhang, Yu-Shan 1; Zhang, Bin-Mei 1; Kong, Ling-Bin 1,2; Liu, Mao-Cheng 1,2
刊名	Materials Research Express
	2019-10-23
卷号	6 期号:11
关键词	Capacitance Carbon Carbonization Costs Electrolytes Ionic liquids Pore size Porous materials Potassium hydroxide Supercapacitor Capacitive behavior Carbonization process Electrochemical performance Hierarchical porous carbons Hierarchical porous structures High specific capacitances High specific surface area potatoes
ISSN号	2053-1591
DOI	10.1088/2053-1591/ab4d36
英文摘要	The construction of hierarchical porous carbon with low cost and superior performance based on biomass materials plays a significance role in application of supercapacitors. A three-dimensional Hierarchical Porous Carbon (3D HPC) was synthesized by one-step carbonization process with in situ chemical activation using potato as precursor. The 3D HPC exhibits high specific surface area and good hierarchical porous structure which can serve an excellent electrochemical performance. It can reach a high specific capacitance of 236 F g-1 at 0.5 A g-1 and a long cycle life (capacitance retention of 96% after 10000 cycles) in 2 M KOH. The 3D HPC//3D HPC symmetrical supercapacitor achieves a high energy density of 6.8 Wh kg-1 at the power density of 310 W kg-1. Meanwhile, the [BMIm]BF4/acetonitrile (AN) ionic liquid was applied to promote the energy density to supercapacitors, the higher energy density (45.06 Wh kg-1) is shown compared with that in aqueous electrolyte and most reported carbon materials in ionic liquid. The outstanding performance is attributed to the porous structure with different pore size which not only provide large surface area but also facilitate the electrolyte ions transport rapidly. This study offers a convenient and effective approach to deriving low cost and high performance carbon material for supercapacitors. © 2019 IOP Publishing Ltd.
WOS研究方向	Materials Science
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000504242000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114355]
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Bailie Engineering AndTechnology, Lanzhou City University, Lanzhou; 730070, China
推荐引用方式 GB/T 7714	Lu, Chun,Qian, Xue-Zhi,Zhu, Hao-Yan,et al. 3D hierarchical porous carbon derived from direct carbonization and in-situ chemical activation of potatoes toward high-performance supercapacitors[J]. Materials Research Express,2019,6(11).
APA	Lu, Chun.,Qian, Xue-Zhi.,Zhu, Hao-Yan.,Hu, Yu-Xia.,Zhang, Yu-Shan.,...&Liu, Mao-Cheng.(2019).3D hierarchical porous carbon derived from direct carbonization and in-situ chemical activation of potatoes toward high-performance supercapacitors.Materials Research Express,6(11).
MLA	Lu, Chun,et al."3D hierarchical porous carbon derived from direct carbonization and in-situ chemical activation of potatoes toward high-performance supercapacitors".Materials Research Express 6.11(2019).