Facial design and synthesis of Ce doped Co-Ni oxide nanocages with cubic structure for high-performance asymmetric supercapacitors

Gao, Haiwen; Wang, Yan; Shen, Honglong; Wu, Zongdeng; Song, Jing; Jia, Yu; Liu, Cai; Jing, Haiyan; Zhao, Peng; Lei, Wu; Hao, Qingli

doi:10.1016/j.apsusc.2022.156132

Cited by 16 publications

(3 citation statements)

References 57 publications

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“…After more than 10 000 charge and discharge cycles in 1 mol L −1 KOH aqueous solution, 94% of the initial capacity was maintained, indicating good cycling performance. Gao 10 et al doped cobalt–nickel oxide nanocages with Ce, and the specific capacitance of the nanomaterial was as high as 1976 F g −1 at 1 Å g −1 current density. After 10 000 cycles, the capacitance retention rate of the NiCo 2 O x /CeO y /CC device was 91.5%, indicating that the material has good application value in high-performance supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Research on zinc cobaltate porous mesh materials with different percentages of Sm doping: synthesis, structural and capacitive properties analysis

Wang,

Wu,

Hao

et al. 2024

React. Chem. Eng.

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Section: Introductionmentioning

confidence: 99%

Research on zinc cobaltate porous mesh materials with different percentages of Sm doping: synthesis, structural and capacitive properties analysis

Wang,

Wu,

Hao

et al. 2024

React. Chem. Eng.

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“…Shen et al [10] successfully prepared layered electrode materials with ZnCo 2 O 7 nanorods/nickel foam integration using a hydrothermal synthesis method, with a specific capacitance of 1400 F•g −1 . Gao et al [11] doped cobalt nickel oxide nanocages with Ce and the specific capacitance of the nanomaterial was as high as 1976 F•g −1 at a current density of 1 A•g −1 . After 10,000 cycles, the capacitance retention rate of the NiCo 2 O x /CeOy/CC device is 91.5%, indicating that the material has good application value in high performance supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation of Nd–Doped Zinc Cobalt Oxide Porous Film and Its Electrochemical Properties

Yue,

Wang,

et al. 2023

Coatings

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In this paper, ZnCo2O4(Nd–ZnCo2O4) films were prepared using a hydrothermal method and an electrodeposition method. We characterized the samples using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The effect of Nd–ZnCo2O4 doping on the stability of the materials was studied. The results show that the Nd−ZnCo2O4 prepared in the experiment presents a porous network structure, no other impurity peaks and impurity elements exist, and the purity is high. In the experiment, the electrochemical properties of Nd−ZnCo2O4 were studied. When the current density is 3 A·g−1, the specific capacitance F·g−1 of the electrode is 1982 F·g−1. When the current density is changed 100 times, and every time it is changed back to 3 A·g−1, the specific capacitance F·g−1 is 1973 F·g−1, which is 99.5% of the initial specific capacitance F·g−1. 1982 F·g−1 indicates that Nd−ZnCo2O4 has good stability and can be reused many times. In the cycle stability performance test of Nd–ZnCo2O4//CNTs devices, when the current density is 3 A·g−1, the specific capacitance is 180 F·g−1. After 10,000 cycle charge discharge tests, the specific capacitance F·g−1 becomes 162 F·g−1, maintaining 90% of the initial specific capacitance. These results show that the electrode material has a long cycle life and good cycle stability.

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“…Therefore, boosting C or V is an effective route to further improving energy density. ASCs, a type of SCs with different materials for the anode and cathode, allow for the full utilization of the voltage of both electrodes to expand the operating voltage of the whole cell, thus greatly increasing the energy density [9][10][11][12]. To this end, constructing new electrode materials with high specific capacitance and a wide voltage range has become a major scientific challenge.…”

Section: Introductionmentioning

confidence: 99%

Facile microwave-assisted synthesis of Ce-doped Bi2O3 for efficient asymmetric supercapacitors

Tao,

Wei,

et al. 2023

Preprint

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Bi2O3 (BT) is considered a fascinating anode material for asymmetric supercapacitors (ASCs) due to its high theoretical capacity, but the low conductivity limits further applications. With this in mind, cerium-doped Bi2O3 (Ce−BT) nanoflower spheres were synthesized by a facile and rapid microwave-assisted solvothermal method for ASCs anode materials. It is found that the morphology of BT could be controlled by Ce doping from stacked nanosheets to well-dispersed nanoflowers spheres and producing abundant amorphous regions, thus expediting the ion transport rate. Consequently, When the added Bi to Ce molar ratio is 40:1 (Ce-BT-40), it exhibited a specific capacitance of 721 F g−1 at 0.5 A g−1. Additionally, when fabricating ASCs with as-prepared Ce−BT−40 and CeNiCo-LDH, an energy density of 59.1 Wh kg−1 is provided at a power density of 652 W kg−1. This work not only reveals the mechanism of the effect of Ce doping on the electrochemical properties of BTs but also proposes a rapid synthesis method of Ce−BTs by microwave-assisted solvent method, which provides new insights for building advanced ASCs with high energy density and low cost.

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Facial design and synthesis of Ce doped Co-Ni oxide nanocages with cubic structure for high-performance asymmetric supercapacitors

Cited by 16 publications

References 57 publications

Research on zinc cobaltate porous mesh materials with different percentages of Sm doping: synthesis, structural and capacitive properties analysis

Research on zinc cobaltate porous mesh materials with different percentages of Sm doping: synthesis, structural and capacitive properties analysis

Study on the Preparation of Nd–Doped Zinc Cobalt Oxide Porous Film and Its Electrochemical Properties

Facile microwave-assisted synthesis of Ce-doped Bi2O3 for efficient asymmetric supercapacitors

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