Metal Organic Framework‐Derived Cobalt Dicarboxylate as a High‐Capacity Anode Material for Lithium‐ion Batteries

Abstract Considerable attention has been paid to metal‐organic frameworks (MOFs) for applications as electrode materials for lithium‐ion batteries recently. In this study, we use cobalt terephthalate CoC8H4O4 (CoTPA), one type of MOFs, as an anode material for lithium‐ion batteries for the first time. It delivers a high discharge capacity of about 700 mAh g−1 after 100 cycles with superior capacity retention. In contrast to the conventional lithium‐storage mechanism of MOF‐based anodes in organic carbonyl units, both the inorganic unit (Co2+) and the organic unit (carbonyl group) offer multi‐electron transfer reactions, which results in such a high capacity.