2022
DOI: 10.1021/acsami.1c23731
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Manganese Oxide/Iron Carbide Encapsulated in Nitrogen and Boron Codoped Carbon Nanowire Networks as Accelerated Alkaline Hydrogen Evolution and Oxygen Reduction Bifunctional Electrocatalysts

Abstract: Along with the widespread applications of various energy storage and conversion devices, the prices of precious metal platinum (Pt) and transition-metal cobalt/nickel keep continuously growing. In the future, designing high-efficiency nonprecious-metal catalysts based on low-cost iron (Fe) and manganese (Mn) metals for hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR) is fairly critical for commercial applications of hydrogen fuel cells. In this study, for the first time, we design novel th… Show more

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Cited by 34 publications
(20 citation statements)
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“…The high-resolution TEM (HRTEM) image of the nanoparticle taken near the carbon layer (inset of Figure 2b) demonstrates lattice fringes in two different directions with lattice spacings of 0.208 and 0.229 nm, which correspond to Co(111) and MnO(200), respectively. 32,33 These two phases are in close and direct contact without carbon layers or any other secondary phase in between, indicating that a nanoscale heterointerface between Co and MnO phases is formed near the surface of the composite nanoparticle. The formed heterostructure is expected to be beneficial for the realization of interfacial synergy in the Co/MnO heterostructural electrocatalyst.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…The high-resolution TEM (HRTEM) image of the nanoparticle taken near the carbon layer (inset of Figure 2b) demonstrates lattice fringes in two different directions with lattice spacings of 0.208 and 0.229 nm, which correspond to Co(111) and MnO(200), respectively. 32,33 These two phases are in close and direct contact without carbon layers or any other secondary phase in between, indicating that a nanoscale heterointerface between Co and MnO phases is formed near the surface of the composite nanoparticle. The formed heterostructure is expected to be beneficial for the realization of interfacial synergy in the Co/MnO heterostructural electrocatalyst.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…In addition, the Fe 3 C particles wrapped in carbon layers enhanced the electronic structure and activity of the active site, which promoted the activity at the Fe(II) sites and resulted in a high ORR activity. 15,[43][44][45]…”
Section: Electrochemical Properties and Analysismentioning
confidence: 99%
“…Recently, with the rapid consumption of fossil fuels and severe environmental pollution problems, it is imperative to develop sustainable clean energies, such as wind energy, solar energy, hydrogen energy, geothermal energy, and advanced energy storage technologies. [1][2][3][4][5][6] Among various clean energies, hydrogen is considered as the most promising energy, which is a substitute to fossil fuels when facing alleviating global warming and associated environmental distress. [7][8][9] Besides, the pollution-free energy sources are increasingly being paid attention to by researchers by referring to the trend of sustainable development and ecological protection.…”
Section: Introductionmentioning
confidence: 99%