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Zhu Z, Zhang Y, Kong D, He N, Chen Q. A Novel High Entropy Hydroxide Electrode Material for Promoting Energy Density of Supercapacitors and Its Efficient Synthesis Strategy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307754. [PMID: 38072773 DOI: 10.1002/smll.202307754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/22/2023] [Indexed: 05/18/2024]
Abstract
In this work, a novel high entropy hydroxide NiCoMoMnZn-layered double hydroxide(LDH) is synthesized as an electrode material for supercapacitors using a novel template re-etching method to promote the energy density. As a positive electrode material for supercapacitors, NiCoMoMnZn-LDH has the advantage of a uniform distribution of elements, high specific surface area, porous and stable structure. More importantly, the specific capacitance can reach 1810.2 F g-1 at the current density of 0.5 A g-1, and the NiCoMoMnZn-LDH//AC HSC assembled from the material has an energy density of up to 62.1 Wh kg-1 at a power density of 475 W kg-1. Moreover, the influence of different compositions on their morphological, structural, and electrochemical properties is investigated based on the characterization results. Then, the synergistic mechanism among the components of the high entropy NiCoMoMnZn-LDH is revealed in detail by DFT calculations. In addition, the synthesis strategy proposed in this work for high-entropy hydroxides exhibits universality. Experimental results show that the proposed strategy successfully avoids not only phase separation and element aggregation in the formation of high entropy materials, but also reduces structural distortion, which is beneficial for efficient and large-scale synthesis of high entropy hydroxides.
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Affiliation(s)
- Ziyang Zhu
- School of Energy and Power Engineering, Northeast Electric Power University, Jilin, 132012, China
| | - Yingjin Zhang
- School of Automation Engineering, Northeast Electric Power University, Jilin, 132012, China
| | - Dehao Kong
- School of Energy and Power Engineering, Northeast Electric Power University, Jilin, 132012, China
| | - Nan He
- School of Energy and Power Engineering, Northeast Electric Power University, Jilin, 132012, China
| | - Qicheng Chen
- School of Energy and Power Engineering, Northeast Electric Power University, Jilin, 132012, China
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Ju H, Yang J, Guo X, Lang H, Wang S, Pu C, Zhao L, Yang L, Han W. Prussian blue analogue-derived Co 3O 4/Fe 2O 3 with a partially hollow and octahedral structure for high-performance supercapacitors. Dalton Trans 2024; 53:2626-2634. [PMID: 38224010 DOI: 10.1039/d3dt04021f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
A supercapacitor (SC) is considered as a promising energy storage device because of its high power density, fast charging/discharging speed and long cycle life. The transition metal oxides prepared by traditional methods face some challenges, such as low conductivity and uncontrollable pore size distribution. Therefore, we have prepared Prussian blue analogues (PBAs) using a coprecipitation method. By adjusting additives in the experimental process, uniform PBAs with a series of regular morphologies and structures are successfully prepared. Then the corresponding metal oxides are obtained by calcining precursors. We systematically study the influence of the morphology and structure of metal oxides Co3O4/Fe2O3 derived from PBAs on their electrochemical performance. The metal oxide with a partially hollow and octahedral structure shows excellent electrochemical performance. In a neutral electrolyte, the specific capacitance is 659.7 F g-1 at a current density of 0.5 A g-1. After 6000 cycles, the capacitance retention rate is 63.7%. An asymmetric supercapacitor (ASC) is constructed using Co3O4/Fe2O3 with an octahedral structure (CFMO-PVP-2) as the positive electrode and YP-50F as the negative electrode. The maximum energy density is 31.4 W h kg-1 at a power density of 1921 W kg-1. The maximum power density is 8421 W kg-1 at an energy density of 23.5 W h kg-1. The excellent electrochemical performance is attributed to the low resistance (Rw and Rct) and high DOH- derived from the oxide particles on the surface and within the inner parts of the octahedron, which are available for electron transport. Meanwhile, the open void between adjacent nanoparticles allows the electrolyte ions to diffuse more efficiently and ensures a much more effective area for participating in a reaction. The strategy will give new insights into designing high-performance SCs based on PBAs.
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Affiliation(s)
- Hui Ju
- College of Chemistry and Chemical Engineering, Mianyang Teachers' College, Mianyang, 621900, China.
| | - Jixiang Yang
- College of Chemistry and Chemical Engineering, Mianyang Teachers' College, Mianyang, 621900, China.
| | - Xiaoyang Guo
- College of Chemistry and Chemical Engineering, Mianyang Teachers' College, Mianyang, 621900, China.
| | - Hongli Lang
- College of Chemistry and Chemical Engineering, Mianyang Teachers' College, Mianyang, 621900, China.
| | - Sheng Wang
- College of Chemistry and Chemical Engineering, Mianyang Teachers' College, Mianyang, 621900, China.
| | - Chenjin Pu
- College of Chemistry and Chemical Engineering, Mianyang Teachers' College, Mianyang, 621900, China.
| | - Ling Zhao
- College of Chemistry and Chemical Engineering, Mianyang Teachers' College, Mianyang, 621900, China.
| | - Lirong Yang
- College of Chemistry and Chemical Engineering, Mianyang Teachers' College, Mianyang, 621900, China.
| | - Wenjing Han
- College of Chemical Engineering, Sichuan University of Science and Engineering, Zigong, 643000, China
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Facile electrodeposition route for the fabrication of Ni/Ni(OH)2 nanocomposite films with different supporting electrolytes and their electrochemical properties. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139471] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Hosseinzadeh B, Nagar B, Benages-Vilau R, Gomez-Romero P, Kazemi SH. MOF-derived conformal cobalt oxide/C composite material as high-performance electrode in hybrid supercapacitors. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138657] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jiang J, Sun Y, Chen Y, Zhou Q, Rong H, Hu X, Chen H, Zhu L, Han S. Design and fabrication of metal-organic frameworks nanosheet arrays constructed by interconnected nanohoneycomb-like nickel-cobalt oxide for high energy density asymmetric supercapacitors. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136077] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Hong ST, Lin LY. Fabrication of TiO2 nanoparticle/TiO2 microcone array photoanode for fiber-type dye-sensitized solar cells: Effect of acid concentration on morphology of microcone. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135278] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Large-scale synthesis of Ni(OH)2/peach gum derived carbon nanosheet composites with high energy and power density for battery-type supercapacitor. J Colloid Interface Sci 2019; 557:608-616. [DOI: 10.1016/j.jcis.2019.09.061] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/11/2019] [Accepted: 09/17/2019] [Indexed: 11/22/2022]
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A facile preparation of graphene/reduced graphene oxide/Ni(OH)2 two dimension nanocomposites for high performance supercapacitors. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.09.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hong WL, Lin LY. Influence of structure directing agents on synthesizing battery-type materials for flexible battery supercapacitor hybrids. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.04.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hong WL, Lin LY. Studying the substrate effects on energy storage abilities of flexible battery supercapacitor hybrids based on nickel cobalt oxide and nickel cobalt oxide@nickel molybdenum oxide. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Chen YC, Lin LY. Investigating the redox behavior of activated carbon supercapacitors with hydroquinone and p-phenylenediamine dual redox additives in the electrolyte. J Colloid Interface Sci 2019; 537:295-305. [DOI: 10.1016/j.jcis.2018.11.026] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/08/2018] [Accepted: 11/09/2018] [Indexed: 11/24/2022]
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Chen TY, Lin LY. Morphology variation for the nickel cobalt molybdenum copper oxide with different metal ratios and their application on energy storage. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.12.157] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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