The re-emergence of sodium ion batteries: testing, processing, …
For example, it has been well documented that safety implications arise if too much lithium is removed from the Li 1-x CoO 2 crystal structure (> ca. 0.5 mol Li) because of irreversible changes in the crystal structure. 13, 14 In comparison, sodium-layered oxides can show a greater stability window for Na 1-x MO 2. 15 – 17 Furthermore, sodium ...