MnO2 modified perovskite oxide SrCo0.875Nb0.125O3 as supercapacitor electrode material

Lei, Na; Qiao, Yin; Liu, Guanfu; Xu, Renhao; Jiang, Guohua; Demir, Müslüm; Pian, Pian

doi:10.1016/j.matchemphys.2022.126389

Cited by 20 publications

(6 citation statements)

References 71 publications

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“…The variation curve of the C s value of the 5-NBHPC-700-4 electrode with the number of charging/discharging cycles is presented in Figure f. The capacitance retention rate of the 5-NBHPC-700-4 electrode is as high as 94.2%, and the Coulomb efficiency remains around 100% after 10,000 charging/discharging cycles at 5 A g –1 , which is obviously better than the previously reported supercapacitor electrode materials synthesized by other methods. , The two insets in the lower left and right corners of Figure f exhibit the charge/discharge curves of the 5-NBHPC-700-4 electrode during the first 5 and last 5 charge/discharge cycles, respectively. This indicates that the charging and discharging process is still highly reversible and stable after 10,000 cycles, which is inseparable from the excellent pore distribution and stable carbon skeleton structure of the bamboo shavings porous carbon.…”

Section: Resultsmentioning

confidence: 81%

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Qiu

Zhang

Zhao

et al. 2022

Ind. Eng. Chem. Res.

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Considering the problems of environmental pollution and treatment costs generated by renewable waste biomass on a global scale, the development of high-performance electrodes utilizing plentiful natural waste biomass as sustainable precursors is essential to facilitate the practical application of supercapacitors. Hence, we develop a facile and efficient method to construct waste bamboo shavings into petal-like hierarchical porous carbon electrode materials with an ultrahigh specific surface area and N, O codoped interfaces through H 3 PO 4 -catalyzed hydrothermal pretreatment combined with coactivation by KOH/melamine. The effects of optimal regulation of pore structure and surface modification (heteroatom doping) on the superior electrochemical properties of carbon materials are investigated in depth. The derived carbon materials presenting an excellent potential for practical applications of supercapacitors are mainly attributed to their large specific surface area (3392 m 2 g −1 ), prominent pore volume (2.081 m 3 g −1 ), and petal-like hierarchical porous structure with abundant N, O content, which results in rapid ion diffusion and adequate electrical charge storage as well as contributed pseudocapacitance. 5-BHPC-700-4 exhibits attractive electrochemical properties in a 6.0 M KOH electrolyte, including a delightful capacitance (501.6 F g −1 at 0.5 A g −1 in a three-electrode system) and superior cycling stability (94.2% capacitance retention after 10,000 cycles at 5.0 A g −1 ). The assembled symmetrical supercapacitor device achieves an impressive energy density of 15.3 Wh kg −1 at a power density of 290 W kg −1 . This work provides a valuable reference for the design and preparation of biomass-based hierarchical porous carbon with outstanding supercapacitor performance and low cost.

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Section: Resultsmentioning

confidence: 81%

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Qiu

Zhang

Zhao

et al. 2022

Ind. Eng. Chem. Res.

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“…4e, the CoWO 4 @WO 3 -1 electrode exhibits better rate properties than the other electrodes, which are also superior to those of most previously reported cobalt- and tungsten-based electrodes. 39–41 The relation of the redox peak current density ( i , mA cm −2 ) and scan rate ( υ , mV s −1 ) was studied by eqn (4) and (5) to further evaluate the kinetic properties of the CoWO 4 @WO 3 -1 electrode: i = aν b log i = log a + b log ν where a and b are variable parameters. A b value equal to 0.5 indicates a diffusion-controlled process.…”

Section: Resultsmentioning

confidence: 99%

Unique CoWO₄@WO₃heterostructured nanosheets with superior electrochemical performances for all-solid-state supercapacitors

Guo

et al. 2022

Dalton Trans.

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“…MnO 2 is a crystal or black powder with up to 30 different crystal structures. As a natural mineral, it is more complex than simple oxides due to its polyvalence and nonstoichiometric composition [ 42 , 43 , 44 , 45 , 46 ]. In catalysis, different crystalline MnO 2 types have different catalytic activities.…”

Section: Basic Knowledge Of Manganese-based Materialsmentioning

confidence: 99%

Recent Advances in Manganese-Based Materials for Electrolytic Water Splitting

Zhou

Liu

et al. 2023

IJMS

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Developing earth-abundant and highly effective electrocatalysts for electrocatalytic water splitting is a prerequisite for the upcoming hydrogen energy society. Recently, manganese-based materials have been one of the most promising candidates to replace noble metal catalysts due to their natural abundance, low cost, adjustable electronic properties, and excellent chemical stability. Although some achievements have been made in the past decades, their performance is still far lower than that of Pt. Therefore, further research is needed to improve the performance of manganese-based catalytic materials. In this review, we summarize the research progress on the application of manganese-based materials as catalysts for electrolytic water splitting. We first introduce the mechanism of electrocatalytic water decomposition using a manganese-based electrocatalyst. We then thoroughly discuss the optimization strategy used to enhance the catalytic activity of manganese-based electrocatalysts, including doping and defect engineering, interface engineering, and phase engineering. Finally, we present several future design opportunities for highly efficient manganese-based electrocatalysts.

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MnO2 modified perovskite oxide SrCo0.875Nb0.125O3 as supercapacitor electrode material

Cited by 20 publications

References 71 publications

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Unique CoWO₄@WO₃heterostructured nanosheets with superior electrochemical performances for all-solid-state supercapacitors

Recent Advances in Manganese-Based Materials for Electrolytic Water Splitting

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MnO2 modified perovskite oxide SrCo0.875Nb0.125O3 as supercapacitor electrode material

Cited by 20 publications

References 71 publications

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Unique CoWO4@WO3heterostructured nanosheets with superior electrochemical performances for all-solid-state supercapacitors

Recent Advances in Manganese-Based Materials for Electrolytic Water Splitting

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Unique CoWO₄@WO₃heterostructured nanosheets with superior electrochemical performances for all-solid-state supercapacitors