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Improvement of electrochemical performance of nickel rich LiNi0.6Co0.2Mn0.2O2 cathode active material by ultrathin TiO2 coating.
Dalton Trans. 2016 Jun 21; 45(23):9669-75.DT

Abstract

LiNi0.6Co0.2Mn0.2O2 cathode material has been surface-modified by coating with ultrathin TiO2via atomic layer deposition (ALD) technology to improve the electrochemical performance of LiNi0.6Co0.2Mn0.2O2 cathodes for lithium ion batteries. Within the cut-off voltage of 2.5-4.3 V, the coated sample delivers an initial discharge capacity of 187.7 mA h g(-1) at 0.1 C and with a capacity retention about 85.9% after 100 cycles at 1 C, which provides a significant improvement in terms of discharge capacity and cyclability, as compared with those of the bare one. Such enhanced electrochemical performance of the coated sample is ascribed to its high-quality ultrathin coating of amorphous TiO2, which can protect the active material from HF attack, withstand the dissolution of metal ions in the electrode and favor the lithium diffusion of oxide as proved by electrochemical impedance spectroscopy (EIS) tests. TiO2 coating via the ALD process provides a potential approach for battery factories to surface-modify Ni-rich electrode materials so as to realize improvements in electrochemical performance.

Authors+Show Affiliations

National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, Jiangsu 210093, China. yftang@nju.edu.cn.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27225044

Citation

Qin, CanCan, et al. "Improvement of Electrochemical Performance of Nickel Rich LiNi0.6Co0.2Mn0.2O2 Cathode Active Material By Ultrathin TiO2 Coating." Dalton Transactions (Cambridge, England : 2003), vol. 45, no. 23, 2016, pp. 9669-75.
Qin C, Cao J, Chen J, et al. Improvement of electrochemical performance of nickel rich LiNi0.6Co0.2Mn0.2O2 cathode active material by ultrathin TiO2 coating. Dalton Trans. 2016;45(23):9669-75.
Qin, C., Cao, J., Chen, J., Dai, G., Wu, T., Chen, Y., Tang, Y., Li, A., & Chen, Y. (2016). Improvement of electrochemical performance of nickel rich LiNi0.6Co0.2Mn0.2O2 cathode active material by ultrathin TiO2 coating. Dalton Transactions (Cambridge, England : 2003), 45(23), 9669-75. https://doi.org/10.1039/c6dt01764a
Qin C, et al. Improvement of Electrochemical Performance of Nickel Rich LiNi0.6Co0.2Mn0.2O2 Cathode Active Material By Ultrathin TiO2 Coating. Dalton Trans. 2016 Jun 21;45(23):9669-75. PubMed PMID: 27225044.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Improvement of electrochemical performance of nickel rich LiNi0.6Co0.2Mn0.2O2 cathode active material by ultrathin TiO2 coating. AU - Qin,CanCan, AU - Cao,JiaLi, AU - Chen,Jun, AU - Dai,GaoLe, AU - Wu,TongFu, AU - Chen,Yanbin, AU - Tang,YueFeng, AU - Li,AiDong, AU - Chen,Yanfeng, Y1 - 2016/05/26/ PY - 2016/5/27/entrez PY - 2016/5/27/pubmed PY - 2016/5/27/medline SP - 9669 EP - 75 JF - Dalton transactions (Cambridge, England : 2003) JO - Dalton Trans VL - 45 IS - 23 N2 - LiNi0.6Co0.2Mn0.2O2 cathode material has been surface-modified by coating with ultrathin TiO2via atomic layer deposition (ALD) technology to improve the electrochemical performance of LiNi0.6Co0.2Mn0.2O2 cathodes for lithium ion batteries. Within the cut-off voltage of 2.5-4.3 V, the coated sample delivers an initial discharge capacity of 187.7 mA h g(-1) at 0.1 C and with a capacity retention about 85.9% after 100 cycles at 1 C, which provides a significant improvement in terms of discharge capacity and cyclability, as compared with those of the bare one. Such enhanced electrochemical performance of the coated sample is ascribed to its high-quality ultrathin coating of amorphous TiO2, which can protect the active material from HF attack, withstand the dissolution of metal ions in the electrode and favor the lithium diffusion of oxide as proved by electrochemical impedance spectroscopy (EIS) tests. TiO2 coating via the ALD process provides a potential approach for battery factories to surface-modify Ni-rich electrode materials so as to realize improvements in electrochemical performance. SN - 1477-9234 UR - https://www.unboundmedicine.com/medline/citation/27225044/Improvement_of_electrochemical_performance_of_nickel_rich_LiNi0_6Co0_2Mn0_2O2_cathode_active_material_by_ultrathin_TiO2_coating_ L2 - https://doi.org/10.1039/c6dt01764a DB - PRIME DP - Unbound Medicine ER -
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