Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 1, Pages 582-587Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b09641
Keywords
lithium-ion batteries; nickel-rich layered material; Li+ transportation; cycling stability; rate capability
Funding
- Chinese National 973 Program [2015CB251100]
- National Natural Science Foundation of China [51472032, 51202083]
- Program for New Century Excellent Talents in University [NCET-13-0044]
- Special Fund of Beijing Coconstruction Project
- BIT Scientific and Technological Innovation Project [2013CX01003]
- National Key Technology RD Program [2013BAG10B00]
- Major achievements Transformation Project for Central University in Beijing
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The nickel-rich LiNi0.7Co0.15Mn0.15O2 material was sintered by Li source with the Ni0.7Co0.15Mn0.15(OH)(2) precursor, which was prepared via hydrothermal treatment after coprecipitation. The intensity ratio of I-(110)/I-(108) obtained from X-ray diffraction patterns and high-resolution transmission electronmicroscopy confirm that the particles have enhanced growth of (110), (100), and (010) surface planes, which supply superior inherent Li+ deintercalation/intercalation. The electrochemical measurement shows that the LiNi0.7Co0.15Mn0.15O2 material has high cycling stability and rate capability, along with fast charge and discharge ability. Li+ diffusion coefficient at the oxidation peaks obtained by cyclic voltammogram measurement is as large as 10(-11) (cm(2) s(-1)) orders of magnitude, implying that the nickel-rich material has high Li+ diffusion capability.
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