Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 27, Pages 14291-14297Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta02915e
Keywords
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Funding
- National Science and Technology Support Program [2012BAC08B08, 2012BAK30B04]
- Program for Innovative Research Team in University of Ministry of Education of China [IRT13037]
- Key Science and Technology Innovation Team of Zhejiang Province [2010R50013]
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A novel peanut-like hierarchical micro/nano-lithium-rich cathode material Li1.2Mn0.54Ni0.18Co0.08O2 has been successfully synthesized via a facile solvothermal method combined with a calcination process. XRD patterns show that the as-prepared sample has high crystallinity and a well-formed layered structure. As a cathode material for Li-ion batteries, this oxide exhibits high capacity, good cyclic stability and superior rate capability. It delivers a discharge capacity of 229.9 mA h g(-1) at a current density of 200 mA g(-1) between 2.0 and 4.8 V with a high capacity retention of 94.2% after 100 cycles. High reversible discharge capacities of 198.3, 167.5 and 145 mA h g(-1) are obtained at 400, 1000 and 2000 mA g(-1), respectively. This excellent electrochemical performance is attributed to the hierarchical micro/nanostructure.
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