Formation of Li <sub>10</sub> Zn <sub>4</sub> O <sub>9</sub> , Li <sub>2</sub> MoO <sub>3</sub> , and ZnSeO <sub>3</sub> Nanophases: Roles in Electrical Conductivity and Electrochemical Stability in Lithium Ion Conductors and their Crystalline Counterparts
Aditi Sengupta, Anil Chamuah, Rakesh Ram, Chandan Kumar Ghosh, Sanghraj Diyali, Bhaskar Biswas, Mir Sahidul Ali, Sanjib Bhattacharya
Abstract
Li 2 O doped glass-nanocomposites and their crystalline counterparts have been developed and analyzed on the light of DC conductivity and cyclic-voltammetic (CV) studies. Micro-structural study reveals the distribution of Li 10 Zn 4 O 9, Li 2 Zn 2 (MoO 4 ) 3 , ZnMoO 4 , Zn(MoO 2 ) 2 , Li 2 Mo 6 O 7 and Li 2 MoO 3 nanophases in the glassy matrices. Crystalline counterparts exhibit an enhancement in crystallites’ sizes. As the crystalline counterpart is formed by controlled cooling, ZnSeO 3 chain structure is expected to break by increasing dimensions of molybdate rod-like structures. In the present study, crystalline counterpart shows better electrochemical stability. Interconnected ZnSeO 3 nanophases have to initiate structural stability as they play pivotal role in the formation of structure. Formation of Li 10 Zn 4 O 9 and Li 2 MoO 3 nanophases are supposed to be responsible for higher conductivity in the glassy system.