Electrochemical performance and reaction mechanism of all-solid-state lithium–air batteries composed of lithium, Li1+xAlyGe2−y(PO4)3 solid electrolyte and carbon nanotube air electrode

• DOI: 10.1039/c2ee22381c
• Publication Date: 2012-08-16T15:03:16Z
• Authors: Hirokazu Kitaura; Haoshen Zhou
• Keywords: Fast ion conductor

The all-solid-state lithium–air cells using lithium anode, the Li1+xAlyGe2−y(PO4)3 inorganic solid electrolyte and air electrode composed of carbon nanotubes were constructed. electrochemical performance reaction mechanism investigated in atmosphere. successful discharging charging. first discharge charge capacities about 1700 mA h g−1 900 g−1, respectively, at a current density 500 voltage range 2.0–4.2 V (vs. Li/Li+). observed redox potential around 3.1 Li) indicated that is formation decomposition Li2O2. Additionally, total polarization 0.2 V, between curves under low density, proved use stable electrolytes can improve large cell organic liquid electrolytes. However, presence both chemical side reactions, which gases such as water dioxide ambient involved, was also suggested discussed according to experimental results.