Nanorods MnOOH

Battery applications Titanium containing y-Mn02 (TM) hollow spheres synthesis and catalytic activities in Li-air batteries [123] Orthorhombic LiMn02 nanorods for lithium ion battery application [124] Electrochemical characterization of MnOOH-carbon nanocomposite cathodes for metal—air batteries [125] Electrocatalytic activity of nanosized manganite [126]... 

Ohsaka s group has extensively examined the electrochemical behavior of both chemically and electrochemically deposited Mn02, both as discrete NPs and as nanostructured interfacial materials [61,64—81]. We focus here on two of their studies that exemplify the electrocatalytic nature of these nanoscale materials. In the first effort, El-Deab and Ohsaka explored the electrocatalytic behavior of MnOOH nanorods that had been electrodeposited onto Pt electrodes by oxidation of Mn(II) in an aqueous solution of manganese acetate [76]. The nanorods had average diameters of 20 nm and aspect ratios of 45 (i.e. average lengths of 900 nm) and covered nearly... 

S. 1. Hydrothermal preparation of y-MnOOH and P Mn02 nanowires/nanorods... 

Facile methods have been developed to synthesize single-crystalline manganese oxide and oxyhydroxide nanowires/nanorods. Pure phase of single-crystalline y-MnOOH nanowires/nanorods have been synthesized by hydrothermal transformation of granular y- or p-MnOa in water at 180 - 200 °C, and pure P-MnOa and a-MnaOa nanowires/nanorods formed after subsequent calcination at... 

Ohsaka and coworkers initially reported the outstanding catalytic enhancement of OER of MnO,c nanorod modified platinum, gold and glassy carbon (GC) electrodes and evaluated the loading level of MnO (in the manganite phase, y-MnOOH) and the pH of the electrolyte for OER. The nanorods showed a maximum activity in basic medium and the... 

In general, 3-Mn02 nanostmctures were synthesized hydrothermally by the oxidation of a Mn " " precursor in either neutral [153,160,161,173,176] or alkaline [143, 175] media, or by thermal decomposition of a MnOOH precursor [145,166-168]that yielded only nanorod and nanowhisker morphologies. Products obtained via the thermal decomposition of MnOOH typically retained the dimensions of the MnOOH precursor. The diameters of the P-Mn02 nanorods were found to be within the range of 30 to 400 nm, with lengths of up to several micrometers. 

---