In situ growth of Co3O4 coating layer derived from MOFs on LiNi0.8Co0.15Al0.05O2 cathode materials
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LiNi0.8Co0.15Al0.05O2 (NCA) has become one of the research focuses due to its advantages including low cost and high reversible capacity. However, many drawbacks such as the dissolution of the cation into the electrolyte caused by hydrofluoric acid severely limited its electrochemical performance. In this study, Co3O4 derived from metal-organic frameworks (MOFs) is coated on the surface of commercial NCA utilizing in situ growth followed by annealing. The structure and morphology of the samples are characterized by X-ray diffraction, scanning electron microscope, and transmission electron microscope. NCA@Co3O4 delivers a remarkable capacity retention of 73.7% and 84.4% at 1 C and 2 C after 100 cycles at each rate, respectively. Meanwhile, the rate performance of NCA@Co3O4 is significantly improved. The inhibition of the side reaction between cathode materials and electrolyte, and the reduced charge-transfer resistance that brought by Co3O4 coating layer are the main reasons for the excellent electrochemical performance.
KeywordsLiNi0.8Co0.15Al0.05O2 Surface coating In situ growth MOFs derived Co3O4
This work is supported by the Scientific and Technological Development Project of the Beijing Education Committee (No. KZ201710005009).
- 9.Kasnatscheew J, Evertz M, Streipert B, Wagner R, Nowak S, Cekic Laskovic I, Winter M (2017) Changing established belief on capacity fade mechanisms: thorough investigation of LiNi1/3Co1/3Mn1/3O2 (NCM111) under high voltage conditions. J Phys Chem C 121:1521–1529. https://doi.org/10.1021/acs.jpcc.6b11746 CrossRefGoogle Scholar
- 17.Hou P, Zhang H, Deng X, Xu X, Zhang L (2017) Stabilizing the electrode/electrolyte interface of LiNi0.8Co0.15Al0.05O2 through tailoring aluminum distribution in microspheres as long-life, high-rate, and safe cathode for lithium-ion batteries. ACS Appl Mater Interfaces 9:29643–29653. https://doi.org/10.1021/acsami.7b05986 CrossRefGoogle Scholar
- 18.Huang B, Li X, Wang Z, Guo H, Shen L, Wang J (2014) A comprehensive study on electrochemical performance of Mn-surface-modified LiNi0.8Co0.15Al0.05O2 synthesized by an in situ oxidizing-coating method. J Power Sources 252:200–207. https://doi.org/10.1016/j.jpowsour.2013.11.092 CrossRefGoogle Scholar
- 19.Zhao J, Wang Z, Wang J, Guo H, Li X, Gui W, Chen N, Yan G (2018) Anchoring K+ in Li+ sites of LiNi0.8Co0.15Al0.05O2 cathode material to suppress its structural degradation during high-voltage cycling. Energy Technol. https://doi.org/10.1002/ente.201800361
- 28.Zhang C, Xiao J, Lv X, Qian L, Yuan S, Wang S, Lei P (2016) Hierarchically porous Co3O4/C nanowire arrays derived from a metal–organic framework for high performance supercapacitors and the oxygen evolution reaction. J Mater Chem A 4:16516–16523. https://doi.org/10.1039/c6ta06314d CrossRefGoogle Scholar
- 30.Wu R, Wang D, Rui X, Liu B, Zhou K, Law A, Yan Q, Wei J, Chen Z (2015) In-situ formation of hollow hybrids composed of cobalt sulfides embedded within porous carbon polyhedra/carbon nanotubes for high-performance lithium-ion batteries. Adv Mater 27:3038–3044. https://doi.org/10.1002/adma.201500783 CrossRefGoogle Scholar
- 31.Wu R, Qian X, Rui X, Liu H, Yadian B, Zhou K, Wei J, Yan Q, Feng X, Long Y, Wang L, Huang Y (2014) Zeolitic imidazolate framework 67-derived high symmetric porous Co3O4 hollow dodecahedra with highly enhanced lithium storage capability. Small 10:1932–1938. https://doi.org/10.1002/smll.201303520 CrossRefGoogle Scholar
- 44.Yan X, Chen L, Shah S, Liang J, Liu Z (2017) The effect of Co3O4 & LiCoO2 cladding layer on the high rate and storage property of high nickel material LiNi0.8Co0.15Al0.05O2 by simple one-step wet coating method. Electrochim Acta 249:179–188. https://doi.org/10.1016/j.electacta.2017.07.015 CrossRefGoogle Scholar
- 49.Pan W, Peng W, Yan G, Guo H, Wang Z, Li X, Gui W, Wang J, Chen N (2018) Suppressing the voltage decay and enhancing the electrochemical performance of Li1.2Mn0.54Co0.13Ni0.13O2 by multifunctional Nb2O5 coating. Energy Technol. https://doi.org/10.1002/ente.201800253