Two-step approach of fabrication of three-dimensional MnO2-graphene-carbon nanotube hybrid as a binder-free supercapacitor electrode

Xiong, Chuanyin; Li, Tiehu; Dang, Alei; Zhao, Tingkai; Li, Hao; Lv, Huiqin

doi:10.1016/j.jpowsour.2015.12.056

Cited by 147 publications

(39 citation statements)

References 41 publications

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“…In particular, rectangular CV curves at large scan rates, e.g., up to 10 V s −1 , show that our paper electrode owns good rate capability. This is inseparable from porous structure and superior electrical property of PCM electrode . Galvanostatic charge–discharge (GCD) tests and electrochemical impedance spectroscopy (EIS) characteristic give consistent results (Figure c and Figure S7 (Supporting Information)).…”

supporting

confidence: 53%

Breathable and Wearable Energy Storage Based on Highly Flexible Paper Electrodes

Dong

et al. 2016

Advanced Materials

227

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Breathable and wearable energy storage is achieved based on an innovative design solution. Carbon nanotube/MnO -decorated air-laid paper electrodes, with outstanding flexibility and good electrochemical performances, are prepared. They are then assembled into solid-state supercapacitors. By making through-holes on the supercapacitors, breathable and flexible supercapacitors are successfully fabricated.

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supporting

confidence: 53%

Breathable and Wearable Energy Storage Based on Highly Flexible Paper Electrodes

Dong

et al. 2016

Advanced Materials

227

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“…More importantly, the obtained value of specific capacitance for CM10 thin film in KFCN:Na 2 SO 4 electrolyte is much higher than the previous report (see S. I. S6) and that proves the potential of the present work for developing the higher energy storage devices293031323334. Figure 9(i) compares the cycling stability of the CM10 thin film in Na 2 SO 4 and KFCN:Na 2 SO 4 electrolyte.…”

Section: Resultssupporting

confidence: 55%

An innovative concept of use of redox-active electrolyte in asymmetric capacitor based on MWCNTs/MnO2 and Fe2O3 thin films

Chodankar

Dubal

Lokhande

et al. 2016

Sci Rep

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In present investigation, we have prepared a nanocomposites of highly porous MnO2 spongy balls and multi-walled carbon nanotubes (MWCNTs) in thin film form and tested in novel redox-active electrolyte (K3[Fe(CN)6] doped aqueous Na2SO4) for supercapacitor application. Briefly, MWCNTs were deposited on stainless steel substrate by “dip and dry” method followed by electrodeposition of MnO2 spongy balls. Further, the supercapacitive properties of these hybrid thin films were evaluated in hybrid electrolyte ((K3[Fe(CN)6 doped aqueous Na2SO4). Thus, this is the first proof-of-design where redox-active electrolyte is applied to MWCNTs/MnO2 hybrid thin films. Impressively, the MWCNTs/MnO2 hybrid film showed a significant improvement in electrochemical performance with maximum specific capacitance of 1012 Fg−1 at 2 mA cm−2 current density in redox-active electrolyte, which is 1.5-fold higher than that of conventional electrolyte (Na2SO4). Further, asymmetric capacitor based on MWCNTs/MnO2 hybrid film as positive and Fe2O3 thin film as negative electrode was fabricated and tested in redox-active electrolytes. Strikingly, MWCNTs/MnO2//Fe2O3 asymmetric cell showed an excellent supercapacitive performance with maximum specific capacitance of 226 Fg−1 and specific energy of 54.39 Wh kg−1 at specific power of 667 Wkg−1. Strikingly, actual practical demonstration shows lightning of 567 red LEDs suggesting “ready-to sell” product for industries.

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“…Therefore, the 3D nanocarbon hybrids (such as CNT/graphene, CNF/ graphene, CNT/CNF hybrids) are studied by a large number of the research groups, aiming at overcoming these shortcomings and a synergistic integration of their inherent properties in the new hybrid materials [9][10][11]. These nanocarbon hybrids have an interconnected network of carbon structure, resulting in a synergistic effect in enhanced conductivity in comparison with the individual components, and the special 3D structure significantly provides a variety of applications, such as field-effect transistors [12,13], electron field emitters [14][15][16], sensors [17][18][19][20], fuel cell [21][22][23], batteries [24,25], and supercapacitors [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Three-Dimensional Nanocarbon Hybrids by Chemical Vapor Deposition

Li¹,

Deng²,

Dai³

2020

Hybrid Nanomaterials - Flexible Electronics Materials

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Carbon nanomaterials such as graphene, carbon nanotube (CNT), and carbon nanofiber (CNF) have received tremendous attentions in the past two decades due to their extraordinary mechanical strength and thermal and electrical properties. Recently, it indicates that three-dimensional (3D) nanocarbon hybrids overcome the weakness of individual low-dimensional nanocarbon materials and exhibit unique properties among carbon nanomaterials. Efforts have thus been made to acquire synergistic integration of one-dimensional (1D) and two-dimensional (2D) carbon nanomaterials. Meanwhile, chemical vapor deposition (CVD) is a widespread and effective method of fabricating three-dimensional nanocarbon hybrids compared with other synthetic methods. In this case, a number of 3D nanocarbon hybrids are synthesized by using different precursors at diverse temperature, and the nanocarbon hybrids are expected to be a promising choice for various application areas in the future.

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Two-step approach of fabrication of three-dimensional MnO2-graphene-carbon nanotube hybrid as a binder-free supercapacitor electrode

Cited by 147 publications

References 41 publications

Breathable and Wearable Energy Storage Based on Highly Flexible Paper Electrodes

Breathable and Wearable Energy Storage Based on Highly Flexible Paper Electrodes

An innovative concept of use of redox-active electrolyte in asymmetric capacitor based on MWCNTs/MnO2 and Fe2O3 thin films

Synthesis of Three-Dimensional Nanocarbon Hybrids by Chemical Vapor Deposition

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