期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 25, 期 19, 页码 5043-5050出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201806006
关键词
electrochemistry; lithium; metal-organic frameworks; nanoporous materials; nanostructures
资金
- Key Project of Guangdong Province Nature Science Foundation [2017B030311013]
- Scientific and Technological Plan of Guangdong Province, P.R. China [201804010169, 2017B020227009, 2017A040405048, 2017A040405047, 2017A040405049, 2016A040403109, 2016A050502054, 2016A050503019]
- Scientific and Technological Plan of Guangzhou City, P.R. Chin [201804010169, 2017B020227009, 2017A040405048, 2017A040405047, 2017A040405049, 2016A040403109, 2016A050502054, 2016A050503019]
Nanoporous ZnMn2O4 nanorods have been successfully synthesized by calcining beta-MnO2/ZIF-8 precursors (ZIF-8 is a type of metal-organic framework). If measured as an anode material for lithium-ion batteries, the ZnMn2O4 nanorods exhibit an initial discharge capacity of 1792 mA h g(-1) at 200 mA g(-1), and an excellent reversible capacity of 1399.8 mA h g(-1) after 150 cycles (78.1 % retention of the initial discharge capacity). Even at 1000 mA g(-1), the reversible capacity is still as high as 998.7 mA h g(-1) after 300 cycles. The remarkable lithium-storage performance is attributed to the one-dimensional nanoporous structure. The nanoporous architecture not only allows more lithium ions to be stored, which provides additional interfacial lithium-storage capacity, but also buffers the volume changes, to a certain degree, during the Li+ insertion/extraction process. The results demonstrate that nanoporous ZnMn2O4 nanorods with superior lithium-storage performance have the potential to be candidates for commercial anode materials in lithium-ion batteries.
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