Manganese-based oxide electrocatalysts for the oxygen evolution reaction: a review

Abstract

Oxygen evolution reaction (OER), as an essential process in water decomposition and air batteries, has received increasing attention in the context of clean energy production and efficient energy storage. With...

Effectual Water Oxidation Reinforced by Three-Dimensional (3D) MnO: A Highly Sustainable Electrocatalyst

“…A semiconducting energy conversion device is considered effective and sustainable if the benchmark 10 mA cm −2 current density is achieved at or below 350 mV of overpotential. 62 This decade current has been achieved by our best performing MnO@NF-60 catalyst, as presented in Figure 6c, at a significantly low overpotential ≥150 mV, which is remarkable in general to all known MnO electrocatalysts 22,37,55,56 and specifically to MnO@NF-30 which showed a decade current at an overpotential of ≥160 mV, a bit lower than the overpotential recorded for former MnO catalyst. Furthermore, it is obvious from SEM micrographs that the MnO@NF-30 exhibited incomplete growth of MnO nanoparticles on NF during 30 min of AACVD.…”

“…MnO@NF-60 revealed comparatively better OER activity as observed from MnO@NF-30 ( J ≥ 1000 mA cm –2 at E (RHE) = 1.73 V), and bare@NF ( J = 136 mA cm –2 at E (RHE) = 1.75 V) electrodes, respectively, as described in Figure a,b. It is the remarkable electrochemical activity at such a low potential by a single-phase 3D MnO catalyst reported to the best of our knowledge. ,,, Herein, a comparative overview of OER performances of different manganese oxide-based electrocatalysts investigated in different electrochemical studies is presented in Table . The MnO thin films reported in the present work exhibit the lowest overpotential (η 10 ) and long-term stability compared to the other manganese oxide catalysts reported.…”

Recent Advances in Manganese-Based Materials for Electrolytic Water Splitting

“…Metal sulfides or selenides can be converted into corresponding metal oxides/hydroxides, and the converted substances are considered to be important active sites for sulfide/selenide catalysts. In addition, surface residues or Se in oxides/hydroxides will further reduce the adsorption-free energy difference between O * and OH * , which is important reason the high electrocatalytic activity [ 62 , 63 ].…”

Oxygen-evolution reaction in the presence of cerium(iv) ammonium nitrate and iron (hydr)oxide: old system, new findings

“…2,3 However, developing efficient and stable oxygen-evolution catalysts (OECs) is crucial to yield breakthroughs in water-splitting technology. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Mn, [4][5][6][7][8][9][10] Fe, [11][12][13][14][15] Co, [16][17][18] Ni, [19][20][21] and Cu 22,23 compounds are synthesized using different methods and applied as OECs. Among other conditions, the oxygen-evolution reaction (OER) in the presence of cerium(IV) ammonium nitrate (CAN) as a sacrificial oxidant has been extensively investigated.…”