期刊
CHEMELECTROCHEM
卷 2, 期 11, 页码 1830-1838出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201500145
关键词
3D networks; iron oxide; lithium-ion batteries; microspheres; nitrogen-doped graphene
资金
- National Defense Basic Research Program of China [B1320133001]
- National Nature Science Foundations of China [21201171]
Novel 3D hierarchically porous and nitrogen-doped graphene-like microspheres (3D NPGSs) are prepared by precursor-assisted chemical vapor deposition. 3D NPGSs obtained by using Ni microspheres as a structural template exhibit a 3D conductive framework, and have a well-defined porous structure, large surface area and appropriate heteroatom doping, making them suitable for high-performance storage of lithium ions. Consequently, a good rate capability and excellent cycle performance are achieved using the 3D NPGSs as anodes for lithium storage, and a high reversible capacity of 840mAhg(-1) is obtained after 200cycles. For a further capacitance boost, a thin layer of iron oxide nanoparticles is deposited onto the 3D NPGSs. The resulting 3D FeOx-NPGS electrode exhibits a stable reversible capacity up to 1343mAhg(-1) after 100cycles.
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