A bismuth oxide nanosheet-coated electrospun carbon nanofiber film: a free-standing negative electrode for flexible asymmetric supercapacitors

Li, Lü; Zhang, Xitian; Zhang, Zhiguo; Zhang, Mingyi; Cong, Lina; Pan, Yu; Lin, Shuang‐Yan

doi:10.1039/c6ta06755g

Cited by 134 publications

(58 citation statements)

References 49 publications

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“…The cyclic voltammetry (CV) profiles of r‐Bi 2 O 3 /GN/BC at different scan rates are shown in Figure a. A couple of well‐defined characteristic redox peaks of Bi 2 O 3 is observed between −1 and 0 V, following the Faradaic reactions by equation given below: Bi 2 O 3 + 3H 2 O + 6 e − → 2Bi + 6OH − . Additionally, the current response increases with increasing scan rate, and obvious redox peaks with small shift can be observed at the high scan rate of 20 mV s −1 , suggesting the good rate performance.…”

Section: Resultsmentioning

confidence: 96%

“…Despite great progress, for the emerging applications, further areal capacitance improvement of Bi 2 O 3 film electrode is a vital requirement for flexible supercapacitors. Moreover, the weak rate performance is found in this strategy, only 19% retention is obtained as the rate scan from 5 mV s −1 to 150 mV s −1 . Good rate property is based on fast ion and electron transfer.…”

Section: Introductionmentioning

confidence: 94%

“…Xu et al reported the Bi 2 O 3 flexible anode, in which flower‐like Bi 2 O 3 grown on carbon (CNF) paper with large loading amount (9 mg cm −2 ), and the high areal capacitance of 545 and 312 mF cm −2 can be obtained at the current density of 3 and 15 mA cm −2 . Li et al also demonstrated the Bi 2 O 3 /CNF negative electrode, which shows an areal capacitance of 783 mF cm −2 at 5 mV s −1 and about 150 mF cm −2 at 150 mV s −1 in KOH electrolyte. Despite great progress, for the emerging applications, further areal capacitance improvement of Bi 2 O 3 film electrode is a vital requirement for flexible supercapacitors.…”

Section: Introductionmentioning

confidence: 97%

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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: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

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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“…This achieved rate performance also considerably exceeds the values of the current developed anodes for ARBs. [3b,12,13] For better understanding the real performance of our designed electrode, we plotted the stereogram of gravimetric capacity and areal capacity against mass loading in Figure d, with the comparison to previous reported anodes for aqueous batteries. Significantly, the P–Bi–C electrode has the largest areal capacity and relatively high gravimetric capacity despite the highest mass loading.…”

mentioning

confidence: 99%

In Situ Activation of 3D Porous Bi/Carbon Architectures: Toward High‐Energy and Stable Nickel–Bismuth Batteries

et al. 2018

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To achieve high-energy and stable aqueous rechargeable batteries, state-of-the art of anode materials are needed. Bismuth (Bi) has recently emerged as an attractive anode material due to its highly reversible redox reaction and suitable negative operating working window. However, the capacity and durability of currently reported Bi anodes are still far from satisfactory. Here, an in situ activation strategy is reported to prepare a 3D porous high-density Bi nanoparticles/carbon architecture (P-Bi-C) as an efficient anode for nickel-bismuth batteries. Taking advantages of the fast channels for charge transfer and ion diffusion, enhanced wettability, and accessible surface area, the highly loaded P-Bi-C electrode delivers a remarkable capacity of 2.11 mA h cm as well as high rate capability (1.19 mA h cm at 120 mA cm ). To highlight, a robust aqueous rechargeable Ni//Bi battery based on the P-Bi-C anode is first constructed, achieving decent capacity (141 mA h g ), impressive durability (94% capacity retention after 5000 cycles), and admirable energy density (16.9 mW h cm ). This work paves the way for designing superfast nickel-bismuth batteries with high energy and long-life and may inspire new development for aqueous rechargeable batteries.

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“…Owing to abundant crystal morphologies and unique physical properties, Bi 2 O 3 has attracted extensive attention in SC field [109]. Bi 2 O 3 presents five main polymorphic forms (α-, β-, γ-, δ-, and ω-Bi 2 O 3 ).…”

Section: Bismuth Oxidesmentioning

confidence: 99%

Hierarchically nanostructured transition metal oxides for supercapacitors

et al. 2017

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A bismuth oxide nanosheet-coated electrospun carbon nanofiber film: a free-standing negative electrode for flexible asymmetric supercapacitors

Abstract: The development of a negative electrode for supercapacitors is very critical for the next-generation of energy-storage devices while it remains a great challenge.

Cited by 134 publications

References 49 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

In Situ Activation of 3D Porous Bi/Carbon Architectures: Toward High‐Energy and Stable Nickel–Bismuth Batteries

Hierarchically nanostructured transition metal oxides for supercapacitors

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