The application of transition metal cobaltites in electrochemistry

Guo, Xiaowen; Chen, Changyun; Zhang, Yongcai; Xu, Yuxia; Pang, Huan

doi:10.1016/j.ensm.2019.04.017

Cited by 57 publications

(28 citation statements)

References 277 publications

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“…Amid all these transitional metal oxides, cerium oxide is considered as one of the most suitable candidates for electrode material due to its unique properties, namely higher thermal stability, excellent oxygen storage capacity, supercial electrical diffusivity, and conductivity. 82 Spherical crystalline cerium oxide nanoparticles of diameter range 5-10 nm, synthesized from the hydrothermal method was studied for its electrochemical properties using galvanostatic methods, and the result signies that the initial discharge capacity of cerium oxide fabricated electrode was 460 mA h g À1 , which is higher than the preexisting carbonaceous electrode. Aer 50 cycles only 7% loss was observed in the discharge capacity, which means it has better cyclability.…”

Section: Physicochemical Propertiesmentioning

confidence: 99%

Cerium oxide nanoparticles: properties, biosynthesis and biomedical application

et al. 2020

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Section: Physicochemical Propertiesmentioning

confidence: 99%

Cerium oxide nanoparticles: properties, biosynthesis and biomedical application

et al. 2020

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“…22,23 Thus, the rapid transfer of electrons (electronic conductivity) in the NiCo 2 O 4 electrode and the considerable battery type charge storage behavior can offer a promising positive electrode material for designing HSC with high energy density. 21,24 Even though the electrode materials exhibit high conductivity and synergetic redox performances, rich electroactive sites for the accumulation of electrolyte ions and high transport rate are necessary for effective electrochemical reactions. 1,5,25 Hence, a peculiar design of electroactive materials with high specific surface area and high porous design is important to further improve the electrochemical properties.…”

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confidence: 99%

“…Recently, various nanostructured NiCo 2 O 4 , like nanoflowers, urchin, porous nanospheres, nanowires, nanoflakes, and so on, have been reported as the supercapacitor electrode material with morphological dependent electrochemical performances. 21,22,24 Among various nanostructures, 2D nanomaterials have stunning physicochemical properties and showed special attention in the field of energy storage materials. 5,7,27 These ultrathin, single or few-layered nanosheets exhibit some unique properties like high surface-tovolume ratio, surface charge, a high degree of anisotropic, and so on.…”

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Two dimensional layered nickel cobaltite nanosheets as an efficient electrode material for high‐performance hybrid supercapacitor

et al. 2021

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Nickel cobalt oxide (NCO) is considered an auspicious electrode candidate for the reinforcement of energy-storage devices. Currently, an immense interest is devoted to modifying the morphological aspects of the NCO to boost their surface texture and electrochemical performances, which is feasible for the development of high energy density and durable devices. Herein, we report the synthesis of layered NCO nanosheets via solvothermal reaction by tuning the solvent volume ratio (water/N,N-Dimethylformamide [DMF]) for supercapacitor electrode material. The nickel cobalt oxide is prepared utilizing a 1:2 (DMF:water) ratio of solvent (NCO1) displays a controlled growth of 2D nanosheets with excellent surface texture. Moreover, NCO1 demonstrates the battery type charge storage properties with a maximum specific capacitance (C sp ) of 731 F g À1 , which is far better than NCO2 (623 F g À1 ) and NCO3 (556 F g À1 ) prepared in other solvent proportions. Besides, the constructed hybrid supercapacitor utilizing activated carbon (AC) and NCO1 as the negative and positive electrodes, respectively, exhibits the C sp of 120 F g À1 , and maximum specific energy 37.33 W h kg À1 for the specific power 691.31 W kg À1 and demonstrates excellent stability~80.56% for 20 000 cycles.In different electrochemical energy storage devices, supercapacitors (SCs) have gained abundant consideration as a novel and promising future energy storage device. [1][2][3] Due to their cost effectiveness, fast discharge and charge rate, extraordinary power density, exceptionally extended lifespan, and better safety reliability. [4][5][6] Despite SCs have these excellent features, the limited energy density has severely restricted their feasible application compare to batteries. 7-9 Thus, it is essential to lift

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“…12,19 In particular, binary spinel-type materials are very attractive as battery-type electrode owing to their high theoretical capacitance, eco-friendliness, strong redox activity, abundant resources and low cost. [19][20][21] Thus, nanostructuring the binary spinel metal oxides is a viable route to improve the electrochemical performance. For instance, the nanostructured ZnCo 2 O 4 such as coral-like nanowires, peony-like structure, hierarchical microspheres and cubic-like structure showed the higher specific capacitances compared to bulk counterparts.…”

Section: Introductionmentioning

confidence: 99%

“…Co 1.5 O 4−δ electrode achieves the higher peak current and larger enclosed area of the CV plot than those of ZnCo 2 O 4 , Co 3 O 4 and ZnO electrodes, representing a higher capacitance. The high capacitances of the zinc cobaltite nanomaterials are mainly attributed to the Faradaic reactions contributed by the abundant active sites of M-O/M-O-OH (M represents Zn or Co) in the alkaline electrolyte can be expressed by the following equations:20,34 …”

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3D flower‐like oxygen‐deficient non‐stoichiometry zinc cobaltite for high performance hybrid supercapacitors

et al. 2021

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Non-stoichiometry and defect engineering of nanostructured materials plays a vital role in controlling the electronic structure, which results in enhancing the electrochemical performances. Herein, we report three-dimensional (3D) oxygen-deficient flower-like non-stoichiometry zinc cobaltite (Zn 1.5 Co 1.5 O 4−δ ) for hybrid supercapacitor applications. In particular, XRD, XPS and Raman analyses confirm the oxygen-deficiency of the nonstoichiometry Zn 1.5 Co 1.5 O 4−δ . The oxygen-deficient non-stoichiometry and 3D hierarchical porous structure of Zn 1.5 Co 1.5 O 4−δ offer the efficient utilization of abundant electrochemical active sites and the rapid transportation of ion/electron. Accordingly, the Zn 1.5 Co 1.5 O 4−δ electrode achieves the high specific capacitance of 763.32 F g −1 at 1 A g −1 , which is superior to those of ZnCo 2 O 4 (613.14 F g − 1), Co 3 O 4 (353.88 F g −1 ) and ZnO (248.59 F g −1 ). The hybrid supercapacitor cells, configuring Zn 1.5 Co 1.5 O 4−δ as the positive electrode and activated carbon as negative electrodes, respectively, deliver the maximum energy/power densities (40.49 W h kg −1 at 397.37 W kg −1 and 20.87 W h kg −1 at 50.08 kW kg −1 ) and outstanding cycle stability with capacitance retention of 89.42% over 20 000 cycles.

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The application of transition metal cobaltites in electrochemistry

Cited by 57 publications

References 277 publications

Cerium oxide nanoparticles: properties, biosynthesis and biomedical application

Cerium oxide nanoparticles: properties, biosynthesis and biomedical application

Two dimensional layered nickel cobaltite nanosheets as an efficient electrode material for high‐performance hybrid supercapacitor

3D flower‐like oxygen‐deficient non‐stoichiometry zinc cobaltite for high performance hybrid supercapacitors

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