Optimization effect of Ag-regulated manganese oxides on electrocatalytic performance for Li–O₂ batteries

Abstract

Developing efficient and inexpensive electrocatalysts for the sluggish reaction kinetics is important to help non-aqueous Li-O2 batteries achieve an ultra-high theoretical specific energy density of ~3500 Wh kg-1. Introducing Ag...

Synthesis, characterization and properties of indium-doped manganese oxide molecular sieve sponges

“…Manganese oxides exhibit plenty of applications such as catalytic combustion, 1 degradation of various organic contaminants, 2 environmental arsenic removal via interfacial adsorption, 3 anti-cancer/drug delivery/anti-bacterial agents, 4,5 energy storage devices, 6,7 microbial fuel cells, 8 and electrocatalysis in Li–O 2 batteries. 9 OMS-2 is a type of potassium-containing octahedral manganese oxide molecular sieve, where the letters O, M and S denote octahedral, manganese and sieve, respectively, and has a 2 × 2 tunnel structure and a tunnel size of 4.6 × 4.6 Å as a result of the arrangement of edge and corner-shared MnO 6 octahedra. 10 As a synthetic cryptomelane, OMS-2 materials have many applications, for example, catalytic volatile organic compound (VOC) combustion, 11 catalytic synthesis of imine from benzyl alcohol and aniline, 12 dispersive solid-phase microextraction as an interface adsorbent, 13 and hydrogen production from ethylenediamine-bisborane hydrolysis.…”