Highly Perforated V 2 O 5 Cathode with Restricted Lithiation toward Building “Rocking‐Chair” Type Cell with Graphite Anode Recovered from Spent Li‐Ion Batteries

Current research motivation on fabricating next‐generation lithium‐ion batteries by averting the growing demand for battery raw materials brings enormous interest on the V 2 O 5 cathode again as a result of its abundance, ease synthesis, and tunable Li‐intercalation properties. So far, the research activities are mainly focused on V 2 O 5 to attain a maximum capacity (>300 mAh g −1 ) for more than 1 mol. Li‐intercalation which results in poor structural stability. Keeping this issue in mind, here, the full‐cell assembly by limiting 1 mol is proposed and constructed. Li‐insertion in V 2 O 5 as a cathode and LiC 6 as an anode for the first time. Prior to the full‐cell assembly, hydrothermally prepared rod‐like V 2 O 5 reveals the specific capacity of 143 mAh g −1 in half‐cell configuration with good cycling stability. The full‐cell, V 2 O 5 /LiC 6, offers a specific capacity of ≈236 mAh g −1 with a maximum energy density of ≈197.1 Wh kg −1 . Furthermore, the practical feasibility of the cell has been examined at different temperatures that divulged a maximum energy density of 136 Wh kg −1 at 50 °C. Also, the obtained results encourage V 2 O 5 as a strong contender for the commercial LiFePO 4 /C system andpave the new directions for advanced battery technology.