Control of MnO2 nanocrystal shape from tremella to nanobelt for ehancement of the oxygen reduction reaction activity

High-performance of bare and Ti-doped α-MnO2 nanoparticles in catalyzing the Oxygen Reduction Reaction

“…To our best knowledge [8,16,17], the a-MnO 2 polymorph is the most active towards oxygen reduction reaction and its controlled synthesis is still a current research interest [13]. Furthermore, as already stated in the literature [12,18] …”

Morphology and crystallinity-controlled synthesis of manganese cobalt oxide/manganese dioxides hierarchical nanostructures for high-performance supercapacitors

“…Up to now, MnO 2 with diverse structures and morphologies (such as nanosheets [4], hollow nanospheres [5], nanoflowers [6], nanowires/nanorods [7,8], thin films [9], and nanotubes [10]) and different crystalline phases (such as a [11], b [12], g [13], and d [14]) have been fabricated via electrochemical and chemical routes, and their electrochemical properties have been investigated. These studies indicate that the outstanding nanostructures and crystalline phases of the MnO 2 materials have been regarded as critical factors to influence their properties.…”

Enhanced Oxygen Reduction Reaction Activity with Electrodeposited Ag on Manganese Oxide–Graphene Supported Electrocatalyst

“…Manganese oxide (MnO x ) is one of the most promising alternatives with considerable catalytic activity toward the ORR with up-and-coming advantages, such as wide natural abundance, low cost, and environmental friendliness [25][26][27][28]. Surface morphology of MnO x -based catalysts is an important influential factor to their electrochemical properties [29]. Earlier results show that the electrocatalytic activities of MnO 2 toward the ORR depend strongly on the crystallographic structures, following an order of β-MnO 2 <λ-MnO 2 <γ-MnO 2 <α-MnO 2 ≈δ-MnO 2 [30].…”