Facile Synthesis of Flower-like (BiO)2CO3@MnO2 and Bi2O3@MnO2 Nanocomposites for Supercapacitors

Ma, Jixin; Zhu, Shijin; Shan, Qianyuan; Liu, Shifeng; Zhang, Jintao; Dong, Fan; Liu, Hongdong

doi:10.1016/j.electacta.2015.04.018

Cited by 54 publications

(26 citation statements)

References 28 publications

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“…Much effort has been dedicated to explore various ASC, which usually employ carbon‐based materials as negative electrode because of their large specific surface area, good electrical conductivity, fast charging/discharging kinetics, but their low specific capacitance limits the energy density of ASC, and hence metal oxide‐based anodes such as MoO 3− x , VN, and FeO x have shown promise for ASC due to their higher specific capacitance than carbon‐based materials . Bi 2 O 3 have been reported to be particularly promising since it is cheap, easy fabrication material with suitable negative working window and high theoretical specific capacitance (1370 F g −1 ) . Bi 2 O 3 and its composite materials consisting of the hierarchical rippled Bi 2 O 3 nanobelts, Bi 2 O 3 films, Bi 2 O 3 /activated carbon, Bi 2 O 3 /MnO 2 , and Bi 2 O 3 /reduced graphene (GN) oxide have been studied, and the special capacitance can reach 250, 98, 332.6, 139.4, and 94 F g −1 , respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Bi 2 O 3 have been reported to be particularly promising since it is cheap, easy fabrication material with suitable negative working window and high theoretical specific capacitance (1370 F g −1 ) . Bi 2 O 3 and its composite materials consisting of the hierarchical rippled Bi 2 O 3 nanobelts, Bi 2 O 3 films, Bi 2 O 3 /activated carbon, Bi 2 O 3 /MnO 2 , and Bi 2 O 3 /reduced graphene (GN) oxide have been studied, and the special capacitance can reach 250, 98, 332.6, 139.4, and 94 F g −1 , respectively. It is noteworthy that the capacitance of Bi 2 O 3 is far lower than that of theoretical value, and therefore, it is urgent to develop effective way to address the low specific capacitance issue.…”

Section: Introductionmentioning

confidence: 99%

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Oxygen‐Deficient Bismuth Oxide/Graphene of Ultrahigh Capacitance as Advanced Flexible Anode for Asymmetric Supercapacitors

Liu

Niu

et al. 2017

Adv Funct Materials

174

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Oxygen-deficient bismuth oxide (r-Bi 2 O 3 )/graphene (GN) is designed, fabricated, and demonstrated via a facile solvothermal and subsequent solution reduction method. The ultrafine network bacterial cellulose (BC) as substrate for r-Bi 2 O 3 /GN exhibits high flexibility, remarkable tensile strength (55.1 MPa), and large mass loading of 9.8 mg cm −2 . The flexible r-Bi 2 O 3 /GN/ BC anode delivers appreciable areal capacitance (6675 mF cm −2 at 1 mA cm −2 ) coupled with good rate capability (3750 mF cm −2 at 50 mA cm −2 ). In addition, oxygen vacancies have great influence on the capacitive performance of Bi 2 O 3 , delivering significantly improved capacitive values than the untreated Bi 2 O 3 flexible electrode, and ultrahigh gravimetric capacitance of 1137 F g −1 (based on the mass of r-Bi 2 O 3 ) can be obtained, achieving 83% of the theoretical value (1370 F g −1 ). Flexible asymmetric supercapacitor is fabricated with r-Bi 2 O 3 /GN/BC and Co 3 O 4 /GN/BC paper as the negative and positive electrodes, respectively. The operation voltage is expanded to 1.6 V, revealing a maximum areal energy density of 0.449 mWh cm −2 (7.74 mWh cm −3 ) and an areal power density of 40 mW cm −2 (690 mW cm −3 ). Therefore, this flexible anode with excellent electrochemical performance and high mechanical properties shows great potential in the field of flexible energy storage devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Oxygen‐Deficient Bismuth Oxide/Graphene of Ultrahigh Capacitance as Advanced Flexible Anode for Asymmetric Supercapacitors

Liu

Niu

et al. 2017

Adv Funct Materials

174

View full text Add to dashboard Cite

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“…The demand of renewable energy and energy storage systems is increasing day by day due to depletion of nonrenewable energy sources and fast increase in world population . Supercapacitors as novel class of energy storage devices have been extensively utilized to boost up military devices, electrical hybrid vehicles, portable and consumer wearable electronic devices due to their peculiar properties such as excellent cyclic stability and power density and fast charging and discharge time . Supercapacitor performance depends upon electrode materials; therefore, various materials are investigated as supercapacitor electrodes such as transition metal oxides, carbon materials, and conducting polymers .…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4] Supercapacitors as novel class of energy storage devices have been extensively utilized to boost up military devices, electrical hybrid vehicles, portable and consumer wearable electronic devices due to their peculiar properties such as excellent cyclic stability and power density and fast charging and discharge time. [5][6][7] Supercapacitor performance depends upon electrode materials; therefore, various materials are investigated as supercapacitor electrodes such as transition metal oxides, carbon materials, and conducting polymers. [8][9][10] Electrical double layer capacitors (carbon electrode supercapacitors) are considered excellent cyclic stable and having high power density, but their lower energy density and specific capacitance limit their utilization in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of novel hybrid composite La_2-xCo_xCuO₄electrode for high performance supercapacitors

et al. 2019

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Summary Hybrid composites La2‐xCoxCuO4 (x = 0, 0.1, 0.2, and 0.3) are prepared using one‐step simple hydrothermal route as electrodes for supercapacitors. The effect of varying cobalt content on morphological, structural, and electrochemical properties has been explored using X‐ray diffraction, scanning electron microscopy, and cyclic voltammetry, respectively. The structural parameters obtained by X‐ray diffraction showed tetragonal phase of hybrid composite without any evident impurity phases. The analysis of morphological properties suggested a strong correlation with electrochemical properties, for instance, a relationship between fabric porous structures and electrochemically active sites for redox reactions and intercalation/de‐intercalation processes. The hybrid composite electrodes demonstrated high specific capacitance of the order of 1304 F/g at 10 mV/s scan rate and exhibited decreasing trend on increasing scan rate. Hybrid composites were also tested for their ability as an electrode of high performance supercapacitors in different aqueous electrolytes, i. e, KOH, H2SO4, and Na2SO4 to optimize the best compatible electrolyte. The composite electrode material showed excellent cyclic stability and 98% capacitance retention for 1 A/g after 2000 cycles. The remarkable performance of hybrid composite electrode entails its potential for commercial applications of supercapacitors.

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“…fabricated hierarchical flower‐like NiS, which delivers high specific discharge capacitance, by using a solvothermal synthesis method. The porous structure composites shorten the ion transport path and increase the specific surface area of the material, which result in an excellent supercapacitor performance . The direct growth of metal compounds on Ni foam to form a non‐dense nanostructured layer for high‐performance supercapacitors have recently attracted considerable attention, as no adhesives nor conductive additives are used during this process …”

Section: Introductionmentioning

confidence: 99%

Synthesis of the Urchin‐Like NiS@NiCo₂S₄ Composites on Nickel Foam for High‐Performance Supercapacitors

Yang

Feng

et al. 2019

ChemElectroChem

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A simple hydrothermal treatment process was used to prepare urchin‐like NiS@NiCo2S4 composites on Ni foam, which were then employed as binder‐free and conductive‐agent‐free electrodes for pseudocapacitors. The as‐synthesized composites have significant capacitive performance because of the novel porous structure. A specific capacitance up to 14.32 F cm−2 was obtained at a current density of 5 mA cm−2, which was far higher than that of pristine NiCo2S4 nanotube arrays (about 8.4 F cm−2). More importantly, Ni@NiS@NiCo2S4 and activated carbon (AC) were assembled as the positive and negative electrode, respectively, in an asymmetric supercapacitor, which possesses prominent performance. In addition to 78.7 % capacitance retention when cycling at 50 mA cm−2 for 5000 cycles, the as‐fabricated Ni@NiS@NiCo2S4//AC device exhibits a high energy density of 38.96 Wh kg−1 and power density of 339.62 W kg−1 at a current density of 10 mA cm−2.

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Facile Synthesis of Flower-like (BiO)2CO3@MnO2 and Bi2O3@MnO2 Nanocomposites for Supercapacitors

Cited by 54 publications

References 28 publications

Oxygen‐Deficient Bismuth Oxide/Graphene of Ultrahigh Capacitance as Advanced Flexible Anode for Asymmetric Supercapacitors

Oxygen‐Deficient Bismuth Oxide/Graphene of Ultrahigh Capacitance as Advanced Flexible Anode for Asymmetric Supercapacitors

Fabrication of novel hybrid composite La_2-xCo_xCuO₄electrode for high performance supercapacitors

Synthesis of the Urchin‐Like NiS@NiCo₂S₄ Composites on Nickel Foam for High‐Performance Supercapacitors

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Facile Synthesis of Flower-like (BiO)2CO3@MnO2 and Bi2O3@MnO2 Nanocomposites for Supercapacitors

Cited by 54 publications

References 28 publications

Oxygen‐Deficient Bismuth Oxide/Graphene of Ultrahigh Capacitance as Advanced Flexible Anode for Asymmetric Supercapacitors

Oxygen‐Deficient Bismuth Oxide/Graphene of Ultrahigh Capacitance as Advanced Flexible Anode for Asymmetric Supercapacitors

Fabrication of novel hybrid composite La2-xCoxCuO4electrode for high performance supercapacitors

Synthesis of the Urchin‐Like NiS@NiCo2S4 Composites on Nickel Foam for High‐Performance Supercapacitors

Contact Info

Product

Resources

About

Fabrication of novel hybrid composite La_2-xCo_xCuO₄electrode for high performance supercapacitors

Synthesis of the Urchin‐Like NiS@NiCo₂S₄ Composites on Nickel Foam for High‐Performance Supercapacitors