Construction of Complex Co3O4@Co3V2O8 Hollow Structures from Metal–Organic Frameworks with Enhanced Lithium Storage Properties

• DOI: 10.1002/adma.201702875
• Publication Date: 2017-11-24T12:14:42Z
• Authors: Yan Lu; Le Yu; Minghong Wu; Yong Wang; Xiong Wen (David)...
• Keywords: Co3O4@Co3V2O8; Engineering::Chemical engineering; :Chemical engineering [Engineering]; Lithium‐ion Batteries; 02 engineering and technology; 0210 nano-technology; 7. Clean energy

AbstractA novel metal–organic‐framework‐engaged strategy is demonstrated for the preparation of multishelled Co3O4@Co3V2O8 hybrid nanoboxes. This strategy relies on the unique reaction of zeolitic imidazolate framework‐67 with the vanadium source of vanadium oxytriisopropoxide. Benefitting from the synthetic versatility, a series of nanostructures can be realized including triple‐shelled and double‐shelled Co3O4@Co3V2O8 nanoboxes and single‐shelled Co3V2O8 nanoboxes. When evaluated as electrode materials for lithium‐ion batteries, these unique hollow structures demonstrate remarkable lithium storage properties. For example, the triple‐shelled Co3O4@Co3V2O8 nanoboxes retain a high capacity of 948 mAh g−1 after 100 cycles at 100 mA g−1.