High-performance 2.5 V aqueous asymmetric supercapacitor based on MnO2 nanowire/hierarchical porous carbon composite

Li, Liangshuo1; Pang, Shuhua1; Fan, Xin1; Wang, Yanfang2; Cheng, Hua2; Fang, Dong3; Qin, Lin1; Deng, Ming1; Lu, Zhouguang2

2021-02-01

10.1080/10667857.2021.1879539

MATERIALS TECHNOLOGY   影响因子和分区

1066-7857

1753-5557

Aqueous supercapacitor shows a narrow operating voltage range because of the limitation of the water electrolysis, resulting in low energy density. In this work, a nanoporous MnO2 entangled hierarchical porous carbon skeleton (simplified to MHPC) has been successfully prepared. Aqueous asymmetric supercapacitor has been assembled by employing the MHPC as a positive electrode, a hierarchical porous carbon skeleton (HPC) as a negative electrode, and a neutral Na2SO4 aqueous solution as electrolyte. The assembled asymmetric supercapacitor can be stably charged in an aqueous medium in a wide voltage range of 0-2.5 V and delivers a maximum energy density of 20.8Wh/kg at a power density of 0.25 kW/kg and 25 kW/kg at an energy density of 11.1 Wh/kg in a 1 M Na2SO4 aqueous solution. This strategy provides a new idea for developing high-energy supercapacitor.

Aqueous asymmetric supercapacitor high-performance porous carbon frameworks

SCI ; EI

英语

通讯

Natural Science Foundation of Guangxi Province[2020GXNSFAA159015]

Materials Science

Materials Science, Multidisciplinary

WOS:000622209300001

TAYLOR & FRANCIS LTD

20211010021253

Carbon carbon composites ; Electrodes ; Electrolytes ; Manganese oxide ; Musculoskeletal system ; Porous materials ; Sodium sulfate ; Supercapacitor

Structural Materials Other Than Metal, Plastics or Wood:415.4 ; Biomechanics, Bionics and Biomimetics:461.3 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Guilin Univ Technol, Coll Mat Sci & Engn, Guangxi Key Lab Opt & Elect Mat & Devices, Guilin, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Guangdong Prov Key Lab Energy Mat Elect Power, Shenzhen, Peoples R China
3.Kunming Univ Sci & Technol, Coll Mat Sci & Engn, Kunming, Yunnan, Peoples R China

Li, Liangshuo,Pang, Shuhua,Fan, Xin,et al. High-performance 2.5 V aqueous asymmetric supercapacitor based on MnO2 nanowire/hierarchical porous carbon composite[J]. MATERIALS TECHNOLOGY,2021,37:780-788.

Li, Liangshuo.,Pang, Shuhua.,Fan, Xin.,Wang, Yanfang.,Cheng, Hua.,...&Lu, Zhouguang.(2021).High-performance 2.5 V aqueous asymmetric supercapacitor based on MnO2 nanowire/hierarchical porous carbon composite.MATERIALS TECHNOLOGY,37,780-788.

Li, Liangshuo,et al."High-performance 2.5 V aqueous asymmetric supercapacitor based on MnO2 nanowire/hierarchical porous carbon composite".MATERIALS TECHNOLOGY 37(2021):780-788.