Citation: Fei Yu, Haoyuan Yin, Xueting Bai, Junyao Pan, Xiaochen Zhang, Jie Ma. Cu@Cu₂O/carbon for efficient desalination in capacitive deionization[J]. Chinese Chemical Letters, ;2023, 34(12): 108362. doi: 10.1016/j.cclet.2023.108362 shu

Cu@Cu₂O/carbon for efficient desalination in capacitive deionization

Fei Yu ^a ,
Haoyuan Yin ^a ,
Xueting Bai ^a ,
Junyao Pan ^a ,
Xiaochen Zhang ^a ,
Jie Ma ^{b, c, *,}

a.
College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
b.
Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
c.
School of Civil Engineering, Kashi University, Kashi 844000, China

jma@tongji.edu.cn

Received Date: 24 November 2022
Revised Date: 26 February 2023
Accepted Date: 21 March 2023
Available Online: 22 March 2023

Figures(4)

Electrode materials with strong desalting ability is an important research direction of capacitive deionization. In this study, HKUST-1 was successfully synthesized by the solvothermal method, and MOFs-derived porous carbon/Cu@Cu₂O composites were prepared by simple pyrolysis as cathode materials for CDI. After high-temperature pyrolysis, the Cu⁺ site with unsaturated coordination is generated, and the structure changes from micropores to the coexistence of mesoporous and micropores. The complex pore structure is conducive to strengthening ion migration and diffusion. The results show that the porous carbon/Cu@Cu₂O materials derived from MOFs depend on the pseudocapacitance behavior for capacitive deionization and desalination. At a voltage window of -1.2 V~1.2 V, a current density of 40 mA/g, and 5 mmol/L NaCl, the HDC-1100 exhibited the best desalting capacity of 30.9 mg/g. HDC-1100 also has good cycle stability. After 20 cycles of adsorption and desorption, the desalting capacity almost does not decrease. Therefore, MOFs derived porous carbon/Cu@Cu₂O composites are expected to be an excellent choice for CDI cathode materials.
- Metal-organic framework,
- Derived carbon,
- Capacitive deionization,
- HKUST-1
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Cu@Cu2O/carbon for efficient desalination in capacitive deionization

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Cu@Cu₂O/carbon for efficient desalination in capacitive deionization