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      Mechanical Composite of LiNi 0.8Co 0.15Al 0.05O 2/Carbon Nanotubes with Enhanced Electrochemical Performance for Lithium-Ion Batteries

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          Abstract

          LiNi 0.8Co 0.15Al 0.05O 2/carbon nanotube (NCA/CNT) composite cathode materials are prepared by a facile mechanical grinding method, without damage to the crystal structure and morphology of the bulk. The NCA/CNT composite exhibits enhanced cycling and rate performance compared with pristine NCA. After 60 cycles at a current rate of 0.25 C, the reversible capacity of NCA/CNT composite cathode is 181 mAh/g with a discharge retention rate of 96%, considerably higher than the value of pristine NCA (153 mAh/g with a retention rate of 90%). At a high current rate of 5 C, it also can deliver a reversible capacity of 160 mAh/g, while only 140 mAh/g is maintained for the unmodified NCA. Highly electrical conductive CNTs rather than common inert insulating materials are for the first time employed as surface modifiers for NCA, which are dispersed homogenously on the surface of NCA particles, not only improving the electrical conductivity but also providing effective protection to the side reactions with liquid electrolyte of the battery.

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            Comparison of the structural and electrochemical properties of layered Li[NixCoyMnz]O2 (x = 1/3, 0.5, 0.6, 0.7, 0.8 and 0.85) cathode material for lithium-ion batteries

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              Role of surface coating on cathode materials for lithium-ion batteries

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                Author and article information

                Contributors
                chuhong.zhang@scu.edu.cn
                Journal
                Nanoscale Res Lett
                Nanoscale Res Lett
                Nanoscale Research Letters
                Springer US (New York )
                1931-7573
                1556-276X
                30 May 2017
                30 May 2017
                2017
                : 12
                : 376
                Affiliations
                ISNI 0000 0001 0807 1581, GRID grid.13291.38, State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, , Sichuan University, ; Chengdu, 610065 China
                Author information
                http://orcid.org/0000-0002-3378-7570
                Article
                2143
                10.1186/s11671-017-2143-4
                5449312
                28565884
                a783a024-d1be-40be-9b12-2925ce92d4f6
                © The Author(s). 2017

                Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

                History
                : 20 April 2017
                : 15 May 2017
                Funding
                Funded by: National Basic Research Program of China (973 Program)
                Award ID: 2013CB934700
                Award Recipient :
                Funded by: FundRef http://dx.doi.org/10.13039/501100001809, National Natural Science Foundation of China;
                Award ID: 51673123
                Award ID: 51222305
                Award Recipient :
                Funded by: Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University)
                Award ID: SKLPME2014-2-07
                Award Recipient :
                Categories
                Nano Express
                Custom metadata
                © The Author(s) 2017

                Nanomaterials
                lini0.8co0.15al0.05o2 (nca),carbon nanotubes (cnts),solid-state grinding,lithium-ion battery,cathode

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