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Dr. Dong-Wook Han, Jun-Hwan Ku, Ryoung-Hee Kim, Dr. Dong-Jin Yun, Seok-Soo Lee and Seok-Gwang Doo Aluminum Manganese Oxides with Mixed Crystal Structure: High-Energy-Density Cathodes for Rechargeable Sodium Batteries ChemSusChem 7

Article first published online: 2 MAY 2014 | DOI: 10.1002/cssc.201301254

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Going Al in: The incorporation of aluminum into NaxMnO2 results in aluminum manganese oxides (NaAl0.1Mn0.9O2) showing higher initial discharge capacity and superior cycling performance compared to pristine NaxMnO2. The enhanced performance is due to the formation of a new orthorhombic layered NaMnO2 phase merged with a small amount of tunnel Na0.44MnO2 phase in NaAl0.1Mn0.9O2, and to increase in the surface stability of the NaAl0.1Mn0.9O2 particles caused by the formation of Al[BOND]O bonds on their surfaces.

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