Journal
NANO LETTERS
Volume 14, Issue 6, Pages 3550-3555Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl501164y
Keywords
Biomimetic design; high rate; layered/spinel cathodes; Li-ion batteries; membrane; nanocoating
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Funding
- Key National Basic Research and Development Program of China [2009CB220100]
- National Natural Science Foundation of China [51102018, 21103011]
- Program for New Century Excellent Talents in University [NCET-13-0044]
- BIT Scientific and Technological Innovation Project [2013CX01003]
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Lack of high-performance cathode materials has become a technological bottleneck for the commercial development of advanced Li-ion batteries. We have proposed a biomimetic design and versatile synthesis of ultrathin spinel membrane-encapsulated layered lithium-rich cathode, a modification by nanocoating. The ultrathin spinel membrane is attributed to the superior high reversible capacity (over 290 mAh g(-1)), outstanding rate capability, and excellent cycling ability of this cathode, and even the stubborn illnesses of the layered lithium-rich cathode, such as voltage decay and thermal instability, are found to be relieved as well. This cathode is feasible to construct high-energy and high-power Li-ion batteries.
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