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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
Author(s) -
Divya Madhusoodhanan Lathika,
Natarajan Subramanian,
Lee YunSung,
Aravindan Vanchiappan
Publication year - 2020
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202002624
Subject(s) - anode , cathode , intercalation (chemistry) , battery (electricity) , graphite , lithium (medication) , materials science , ion , energy storage , limiting , energy density , nanotechnology , chemical engineering , electrical engineering , engineering physics , electrode , chemistry , inorganic chemistry , composite material , physics , mechanical engineering , engineering , thermodynamics , organic chemistry , power (physics) , medicine , endocrinology
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.