2020
DOI: 10.1002/adfm.202003407
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A Facile and Scalable Strategy for Fabrication of Superior Bifunctional Freestanding Air Electrodes for Flexible Zinc–Air Batteries

Abstract: The large‐scale fabrication of efficient and inexpensive bifunctional catalysts is highly desirable but very challenging for oxygen reduction reaction and oxygen evolution reaction (ORR–OER) in metal–air batteries. Here, a facile and scalable approach for the fabrication of hierarchically porous air electrode consisting of cobalt nanoparticles embedded in bamboo‐like nitrogen‐rich carbon nanotubes (Co/N@CNTs), which are in situ grown onto the surface of carbon nanotube macrofilm (CNMF) through a catalytic grow… Show more

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Cited by 129 publications
(89 citation statements)
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“…Communications density is about forty-six times of the aqueous lithium-ion battery (Figure S9). [28][29][30][31][32][33] Besides the high electrochemical performance, the Mg-air battery could be made into a fiber shape with a coaxial structure, and it was flexible (Figure S10). The fiber Mg-air battery performed a stable output voltage after bending to 458, 908 and 1358.…”
Section: Angewandte Chemiementioning
confidence: 99%
“…Communications density is about forty-six times of the aqueous lithium-ion battery (Figure S9). [28][29][30][31][32][33] Besides the high electrochemical performance, the Mg-air battery could be made into a fiber shape with a coaxial structure, and it was flexible (Figure S10). The fiber Mg-air battery performed a stable output voltage after bending to 458, 908 and 1358.…”
Section: Angewandte Chemiementioning
confidence: 99%
“…Such single cell with NCF as air cathode holds high OCV up to 1.499 V (Figure S23, Supporting Information), which can rival with those in the reported state-of-the-art solid-state ZABs. [52][53][54] The coin cell type ZAB could steadily discharge at 5 mA cm −2 for 10 000 s without conspicuous voltage attenuation (Figure 4i). More impressively, six coin cells in series could light up 51 parallel high-power red LED lamp beads and keep high brightness (inset in Figure 4i), revealing great potential as portable power source in practical applications.…”
Section: Resultsmentioning
confidence: 99%
“…The encapsulated Co NPs at the tips of N‐doped CNTs excite the catalytic active sites through the interaction with the N‐doped graphitic carbon shell. Meanwhile, the surrounding carbon layer prevent the NPs from aggregation and leaching during the electrochemical process 85 . Accordingly, the interconnected macroporous carbon ensures the exposure of the well dispersed NPs (Figure 8E,F).…”
Section: Tm/carbon Hybrids For Oxygen Electrocatalystsmentioning
confidence: 99%