Journal
NANOSCALE
Volume 6, Issue 6, Pages 3268-3273Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr05676g
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Funding
- 973 Project of China [2011CB935901]
- National Nature Science Foundations of China [91022033, 21201129, 201371108]
- Science and Technology Committee of Shanxi Province [20110321051]
- Technology Development, China, Project [2011-038]
- Shandong Provincial Natural Science Foundation for Distinguished Young Scholar
- Independent Innovation Foundations of Shandong University [2012ZD008]
- National Science Foundation of Shandong Province [ZR2012BM018]
- CAS Key Laboratory of Materials for Energy Conversion [KF2014002]
- Natural Science Youth Foundation of Shanxi Province [2013021011-4, 2013011012-3]
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Hierarchically porous materials are an ideal material platform for constructing high performance Li-ion batteries (LIBs), offering great advantages such as large contact area between the electrode and the electrolyte, fast and flexible transport pathways for the electrolyte ions and the space for buffering the strain caused by repeated Li insertion/extraction. In this work, NiO microspheres with hierarchically porous structures have been synthesized via a facile thermal decomposition method by only using a simple precursor. The superstructures are composed of nanocrystals with high specific surface area, large pore volume, and broad pore size distribution. The electrochemical properties of 3D hierarchical mesoporous NiO microspheres were examined by cyclic voltammetry and galvanostatic charge-discharge studies. The results demonstrate that the as-prepared NiO nanospheres are excellent electrode materials in LIBs with high specific capacity, good retention and rate performance. The 3D hierarchical mesoporous NiO microspheres can retain a reversible capacity of 800.2 mA h g(-1) after 100 cycles at a high current density of 500 mA g(-1).
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