Citation: Duan Huiyu, Wang Tong, Wu Xinyi, Su Ziyun, Zhuang Jing, Liu Suli, Zhu Rongmei, Chen Changyun, Pang Huan. CeO₂ quantum dots doped Ni-Co hydroxide nanosheets for ultrahigh energy density asymmetric supercapacitors[J]. Chinese Chemical Letters, ;2020, 31(9): 2330-2332. doi: 10.1016/j.cclet.2020.06.001 shu

CeO₂ quantum dots doped Ni-Co hydroxide nanosheets for ultrahigh energy density asymmetric supercapacitors

Duan Huiyu ^a,b ,
Wang Tong ^a ,
Wu Xinyi ^a ,
Su Ziyun ^a ,
Zhuang Jing ^a ,
Liu Suli ^a,*, ,
Zhu Rongmei ^b,*, ,
Chen Changyun ^a,*, ,
Pang Huan ^b,*,

a.
Key Laboratory of Advanced Functional Materials of Nanjing, School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China
b.
School of Chemistry and Chemical Engineering, Institute for Innovative Materials and Energy, Yangzhou University, Yangzhou 225009, China

Received Date: 18 December 2019
Revised Date: 23 May 2020
Accepted Date: 1 June 2020
Available Online: 1 June 2020

Figures(4)

By integrating the merits of lanthanide elements and quantum dots, we firstly design CeO₂ quantum dots doped Ni-Co hydroxide nanosheet via a controllable synthetic strategy, which exhibits a large specific capacitance (1370.7 F/g at 1.0 A/g) and a good cyclic stability (90.6% retention after 4000 cycles). Moreover, we assemble an aqueous asymmetric supercapacitor with the obtained material, which has an extremely high energy density (108.9 Wh/kg at 378 W/kg) and outstanding cycle stability (retaining 88.1% capacitance at 2.0 A/g after 4000 cycles).
- Asymmetric supercapacitor,
- Electrochemical energy storage,
- Quantum dots,
- Transition metal hydroxides,
- Rare earth
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CeO2 quantum dots doped Ni-Co hydroxide nanosheets for ultrahigh energy density asymmetric supercapacitors

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通讯作者: 陈斌, bchen63@163.com

CeO₂ quantum dots doped Ni-Co hydroxide nanosheets for ultrahigh energy density asymmetric supercapacitors