Directly Electrospun Carbon Nanofibers Incorporated with Mn3O4 Nanoparticles as Bending-Resistant Cathode for Flexible Al-Air Batteries

Yu, Ying; Zuo, Yuxin; Liu, Ying; Wu, Youjun; Zhang, Zhonghao; Cao, Qi; Zuo, Chao

doi:10.3390/nano10020216

Cited by 10 publications

(8 citation statements)

References 38 publications

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“…Apparently, the peak power density and discharge voltage of N‐NPC‐900 outperformed those (106.2 mW cm −2 at 0.58 V) of commercial Pt/C used as the cathode catalysts under the same catalyst loading amount. The excellent performances of N‐NPC‐900‐based all‐solid‐state Al‐air battery, especially its tremendous power density, exceed those of counterparts using various cathode catalysts (Figure 4d and Table S4, Supporting Information), including acetylene black, [ 36 ] Fe 3 C@N‐doped carbon fibers, [ 37 ] P‐doped carbon dots, [ 38 ] carbon papers, [ 39 ] Ag nanoparticles‐decorated CNTs, [ 40 ] commercial carbon sheets, [ 41 ] Mn 3 O 4 ‐decorated carbon fibers, [ 42 ] La 2 O 3 /SrO/MnO 2 ‐mixed catalysts, [ 43 ] Pt/C powders, [ 44 ] and MnO x ‐decorated fibrous carbon. [ 45 ] Moreover, the Al‐air battery based on N‐NPC‐900 catalyst enabled a consecutive discharge under a high voltage of 1.27 V for more than 30 h (Figure 4e).…”

Section: Resultsmentioning

confidence: 99%

Inhibiting Surface Diffusion to Synthesize 3D Bicontinuous Nanoporous N‐Doped Carbon for Boosting Oxygen Reduction Reaction in Flexible All‐Solid‐State Al‐Air Batteries

Zhang

et al. 2021

Adv Funct Materials

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Catalyzing oxygen reduction reaction (ORR) and accelerating oxygen diffusion are two key challenges for the requirements of the cathode catalysts in the metal-air batteries. A promising strategy for improving both ORR performance and mass diffusion simultaneously is to build carbon-based catalysts with ORR-active chemical dopants and 3D interconnected porosity. Herein, a 3D nanoporous N-doped carbon with bicontinuous porosity and interconnected open-pore channels is reported, which is prepared by a polyaniline-assisted template method. The polyaniline can efficiently inhibit the surface diffusioncaused template coarsening, achieving a small pore size of 35 nm. The small porous morphology gives rise to a high N-dopant concentration up to 7.20 at.%, which in turn exhibits a commercial Pt/C-comparable ORR performance together with satisfied durability in alkaline media. Using these nanoporous carbon catalysts as air electrodes, an all-solid-state flexible Al-air battery is assembled with the measured maximum power density reaching 130.5 mW cm −2 , as compared to 106.2 mW cm −2 when the commercial Pt/C standard is used. This study provides an efficient method to synthesize 3D N-doped carbon with bicontinuous nano-sized pore channels for wide-ranging applications in portable and flexible devices.

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Section: Resultsmentioning

confidence: 99%

Inhibiting Surface Diffusion to Synthesize 3D Bicontinuous Nanoporous N‐Doped Carbon for Boosting Oxygen Reduction Reaction in Flexible All‐Solid‐State Al‐Air Batteries

Zhang

et al. 2021

Adv Funct Materials

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“…The Mn 3 O 4 /CNF electrode could maintain a high specific capacity of 1021 mAh cm À2 after bending 1000 times (Figure 11d). [149] The Mn 3 O 4 /CNF-based Al-air battery demonstrated excellent electrochemical performance and mechanical stability. Ma et al prepared a class of iron carbide nanoparticles embedded mesoporous N-doped carbon nanofibers (Fe 3 C@N-CFs) by pyrolyzing the MOF modified PAN electrospun nanofibers (Figure 11e).…”

Section: Flexible Metal-air Batteriesmentioning

confidence: 98%

Section: Flexible Metal-air Batteriesmentioning

confidence: 99%

Electrospun Nanofibers for New Generation Flexible Energy Storage

Liu

Yan

et al. 2020

Energy & Environ Materials

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As one of the essential components for flexible electronics, flexible electrochemical energy storage (EES) has garnered extensive interests at all levels of materials, devices, and systems. The successful implementation of high‐performance flexible EES devices relies on exploring of suitable electrode/electrolyte materials that have both superior electrochemical and mechanical properties. For this function, one‐dimensional electrospun nanofibers have emerged as a class of promising building blocks for the key components of flexible EES devices. In this overview, the fundamental principles and technical advances of electrospinning are examined, for both their successes and challenges in controllable fabrication of nanofibers with the desirable chemical compositions, micro/meso‐/nanostructures, and therefore resultant properties. The advances in applications of electrospun nanofibers for various key flexible EES devices are critically looked into, including those in supercapacitors, metal‐ion batteries, and metal‐air batteries. The existing challenges and prospects of these electrospun nanofiber‐based flexible EES are discussed, aiming to inspire continued efforts in developing the optimal high‐performance and low cost flexible EES devices for long‐awaited practical applications.

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“…The polymer alkaline gel electrolyte and flexible air cathode were prepared according to our previous paper [6,39], respectively. A 3 × 4 cm aluminum foil served as the metal anode.…”

Section: Characterization and Electrochemical Testsmentioning

confidence: 99%

Electrospun Al2O3 Film as Inhibiting Corrosion Interlayer of Anode for Solid Aluminum–Air Batteries

Zuo

Liu

et al. 2020

Batteries

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Solid Al–air batteries are a promising power source for potable electronics due to their environmentally friendly qualities and high energy density. However, the solid Al–air battery suffers from anodic corrosion and it is difficult to achieve a higher specific capacity. Thus, this work aims at suppressing the corrosion of Al anode by adding an electrospun Al2O3 interlayer on to the surface of the anode. The Al2O3 interlayer effectively inhibits the self-corrosion of the Al anode. Further, the effects of the thickness of the Al2O3 film on corrosion behavior were investigated. The results showed that the Al–air battery with a 4 μm Al2O3 interlayer is more suitable for a low current density discharge, which could be applied for mini-watt devices. With a proper thickness of the Al2O3 interlayer, corrosion of the anode was considerably suppressed without sacrificing the discharge voltage at a low current density. The Al–air battery with a 4 μm Al2O3 interlayer provided a significantly high capacity (1255 mAh/g at 5 mA/cm2) and an excellent stability. This wo presents a promising approach for fabricating an inhibiting corrosion interlayer for solid Al–air battery designed for mini-watt devices.

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Directly Electrospun Carbon Nanofibers Incorporated with Mn3O4 Nanoparticles as Bending-Resistant Cathode for Flexible Al-Air Batteries

Cited by 10 publications

References 38 publications

Inhibiting Surface Diffusion to Synthesize 3D Bicontinuous Nanoporous N‐Doped Carbon for Boosting Oxygen Reduction Reaction in Flexible All‐Solid‐State Al‐Air Batteries

Inhibiting Surface Diffusion to Synthesize 3D Bicontinuous Nanoporous N‐Doped Carbon for Boosting Oxygen Reduction Reaction in Flexible All‐Solid‐State Al‐Air Batteries

Electrospun Nanofibers for New Generation Flexible Energy Storage

Electrospun Al2O3 Film as Inhibiting Corrosion Interlayer of Anode for Solid Aluminum–Air Batteries

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