a-Mn2O3 porous fibers synthesized by air-heated solution blow spinning (A-HSBS) technique: electrochemical assessment for oxygen evolution reaction in alkaline medium.
ARAÚJO, Rondinele Nunes de; RAIMUNDO, Rafael Alexandre; NEVES, Gelmires de Araújo; MASTELARO, Valmor Roberto; MACEDO, Daniel Araujo; LOUREIRO, Francisco José Almeida; TORRES, Marco Antonio Morales; MENEZES, Romualdo Rodrigues.
ARAÚJO, Rondinele Nunes de; RAIMUNDO, Rafael Alexandre; NEVES, Gelmires de Araújo; MASTELARO, Valmor Roberto; MACEDO, Daniel Araujo; LOUREIRO, Francisco José Almeida; TORRES, Marco Antonio Morales; MENEZES, Romualdo Rodrigues.
Abstract: In this work, we report a novel synthesis route of a-Mn2O3 porous fibers obtained by air-heated solution blow spinning (A-HSBS) and their application as an electrocatalyst for the oxygen evolution reaction (OER). Our a-Mn2O3 porous fibers presented superior OER performance to other electrocatalysts reported in the literature, and it is because the fibrous morphology and multiple Mn charge states, which lead to a small overpotential of 378 mV @ 10 mA cm-2. Furthermore, the fibrous a-Mn2O3 electrode exhibited long-term electrochemical stability confirmed by chronopotentiometry testing for 18 h at a current density of 10 mA cm-2 and showing retention/preservation of microstructural properties. Our results underscore the potential of the A-HSBS for producing electrodes with a fiber-like morphology, based on transition metals. The proposed synthesis route can provide economical, durable, and efficient electrocatalysts for water splitting, which can be applied in several applications, such as electrocatalysts, biosensors, among others.
@article={003197561,author = {ARAÚJO, Rondinele Nunes de; RAIMUNDO, Rafael Alexandre; NEVES, Gelmires de Araújo; MASTELARO, Valmor Roberto; MACEDO, Daniel Araujo; LOUREIRO, Francisco José Almeida; TORRES, Marco Antonio Morales; MENEZES, Romualdo Rodrigues.},title={a-Mn2O3 porous fibers synthesized by air-heated solution blow spinning (A-HSBS) technique: electrochemical assessment for oxygen evolution reaction in alkaline medium},journal={Journal of Physics and Chemistry of Solids},note={v. 192, p. 112086-1-112086-9 + supplementary data},year={2024}}