期刊
SMALL
卷 13, 期 17, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201604270
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资金
- National Natural Science Foundation of China [51372242, 21590794, 21210001, 21521092]
- Science and Technology Cooperation Special Project of Hong Kong, Macao, and Taiwan [2014DFT10310]
- National Key Basic Research Program of China [2014CB643802]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2011176]
- Chinese Academy of Sciences [XDB20030300]
- CAS-CSIRO project [GJHZ1730]
- Program of Science and Technology Development Plan of Jilin Province of China [20140201007GX]
Metal organic frameworks (MOFs) featuring versatile topological architectures are considered to be efficient self-sacrificial templates to achieve mesoporous nanostructured materials. A facile and cost-efficient strategy is developed to scalably fabricate binary metal oxides with complex hollow interior structures and tunable compositions. Bimetal organic frameworks of Ni-Co-BTC solid microspheres with diverse Ni/Co ratios are readily prepared by solvothermal method to induce the Ni2Co3-xO4 multishelled hollow microspheres through a morphology-inherited annealing treatment. The obtained mixed metal oxides are demonstrated to be composed of nanometer-sized subunits in the shells and large void spaces left between adjacent shells. When evaluated as anode materials for lithium-ion batteries, Ni2Co3-xO4-0.1 multishelled hollow microspheres deliver a high reversible capacity of 1109.8 mAh g(-1) after 100 cycles at a current density of 100 mA g(-1) with an excellent high-rate capability. Appropriate capacities of 832 and 673 mAh g(-1) could also be retained after 300 cycles at large currents of 1 and 2 A g(-1), respectively. These prominent electrochemical properties raise a concept of synthesizing MOFs-derived mixed metal oxides with multishelled hollow structures for progressive lithium-ion batteries.
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