Abstract
Two-dimensional morphological (2DM) metal oxides are highly desirable for the improvement of electrochemical performance of lithium-ion batteries (LIBs). Herein, a facile and scalable strategy to fabricate porous 2DM zinc-cobalt oxide (ZCO) plates is reported, with the help of a morphology-maintained annealing treatment of metal organic frameworks (MOFs). Through change the proportion of metal nitrates in the precursors, a series of porous ZCO plates are synthesized. Thanks to the porous structure, 2DM morphological features and nanosized building block of Co3O4 plates, the Co3O4 plates electrode as anode materials for LIBs display the high reversible capacity (1027 mA h g-1 at 100 mA g−1 after 100 cycles), remarkable rate capability (541 mA h g-1 even at 1000 mA g−1). Furthermore, this strategy of synthesizing the ZCO plates with MOFs provides a new approach to design bimetallic transition metal oxides that the ratio of transition metal is continuously adjusted and has great lithium storage properties.
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