In situ formed LiNi0.8Co0.15Al0.05O2@Li4SiO4 composite cathode material with high rate capability and long cycling stability for lithium-ion batteries

Abstract LiNi0.8Co0.15Al0.05O2 (LNCA) is a highly promising cathode material for lithium-ion batteries, but the low-rate capability and poor cycling stability of LNCA limit the expansibility of its commercial applications. Herein, Li4SiO4 with a small amount of Al is introduced to modify LNCA by combined wet-chemical and solid-state methods and improve its rate and cycle performance. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), High Resolution Transmission Electron Microscope (HRTEM), and Energy Disperse Spectroscopy (EDS) results confirm that a Li4SiO4 coating layer (2–5 nm) is firmly wrapped on the LNCA surface. The modified LNCA shows surprising rate performance and excellent cycle retention. Specifically, the LNCA material coated with 3 mol% Li4SiO4 displays a discharge capacity of 156.5 mAh g−1 at 10 C and exhibits a capacity retention of 88% after 100 cycles at 1 C rate(2.7–4.3 V). The excellent electrochemical performance of the LNCA@Li4SiO4 is due to the incorporation of the Li4SiO4 layer. This layer enhances the lithium-ion diffusion between electrode and electrolyte and suppresses the side reaction produced by direct contact between the active material and electrolyte during repeated charge–discharge cycles. All these findings indicate the high potential of this material for application in advanced lithium-ion batteries.

[1]  Deyu Wang,et al.  Correlation of oxygen non-stoichiometry to the instabilities and electrochemical performance of LiNi0.8Co0.1Mn0.1O2 utilized in lithium ion battery , 2015 .

[2]  Y. Koyama,et al.  Defect Chemistry in Layered LiMO2 (M = Co, Ni, Mn, and Li1/3Mn2/3) by First-Principles Calculations , 2012 .

[3]  Ji‐Guang Zhang,et al.  Tailoring grain boundary structures and chemistry of Ni-rich layered cathodes for enhanced cycle stability of lithium-ion batteries , 2018, Nature Energy.

[4]  C. Delmas,et al.  Thermal stability of lithium nickel oxide derivatives. Part I: LixNi1.02O2 and LixNi0.89Al0.16O2 (x = 0.50 and 0.30) , 2003 .

[5]  Bao Zhang,et al.  Cyclic performance of Li-rich layered material Li1.1Ni0.35Mn0.65O2 synthesized through a two-step calcination method , 2017 .

[6]  K. Zaghib,et al.  Effect of nano LiFePO4 coating on LiMn1.5Ni0.5O4 5 V cathode for lithium ion batteries , 2012 .

[7]  Yong Yang,et al.  A comparative study of LiNi0.8Co0.2O2 cathode materials modified by lattice-doping and surface-coating , 2004 .

[8]  Zhixing Wang,et al.  A comprehensive study on electrochemical performance of Mn-surface-modified LiNi0.8Co0.15Al0.05O2 synthesized by an in situ oxidizing-coating method , 2014 .

[9]  Zhixing Wang,et al.  Improving the cycling stability of LiCoO2 at 4.5 V through co-modification by Mg doping and zirconium oxyfluoride coating , 2015 .

[10]  Xin Guo,et al.  Enhancement of reactivity in Li4SiO4-based sorbents from the nano-sized rice husk ash for high-temperature CO2 capture , 2014 .

[11]  J. Dawson,et al.  Effects of cationic substitution on structural defects in layered cathode materials LiNiO2 , 2014 .

[12]  Bao Zhang,et al.  Investigation of phase structure change and electrochemical performance in LiVP2O7-Li3V2(PO4)3-LiVPO4F system , 2016 .

[13]  Junwei Jiang,et al.  The reactivity of delithiated Li(Ni1/3Co1/3Mn1/3)O2, Li(Ni0.8Co0.15Al0.05)O2 or LiCoO2 with non-aqueous electrolyte , 2007 .

[14]  Christopher M Wolverton,et al.  Electrical energy storage for transportation—approaching the limits of, and going beyond, lithium-ion batteries , 2012 .

[15]  Zhixing Wang,et al.  A modified co-precipitation process to coat LiNi1/3Co1/3Mn1/3O2 onto LiNi0.8Co0.1Mn0.1O2 for improving the electrochemical performance , 2014 .

[16]  Tongchao Liu,et al.  Aligned Li+ Tunnels in Core-Shell Li(NixMnyCoz)O2@LiFePO4 Enhances Its High Voltage Cycling Stability as Li-ion Battery Cathode. , 2016, Nano letters.

[17]  Hun‐Gi Jung,et al.  A high-capacity Li[Ni0.8Co0.06Mn0.14]O2 positive electrode with a dual concentration gradient for next-generation lithium-ion batteries , 2015 .

[18]  Pengjian Zuo,et al.  Al2O3 Coated Concentration-Gradient Li[Ni0.73Co0.12Mn0.15]O2 Cathode Material by Freeze Drying for Long-Life Lithium Ion Batteries , 2015 .

[19]  Zhen He,et al.  Exploring the use of electrochemical impedance spectroscopy (EIS) in microbial fuel cell studies , 2009 .

[20]  Chong Seung Yoon,et al.  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 , 2013 .

[21]  Xuanxuan Bi,et al.  Evolution of redox couples in Li- and Mn-rich cathode materials and mitigation of voltage fade by reducing oxygen release , 2018, Nature Energy.

[22]  Bao Zhang,et al.  Porous spherical LiMnPO4·2Li3V2(PO4)3/C cathode material synthesized via spray-drying route using oxalate complex for lithium-ion batteries , 2015 .

[23]  Bao Zhang,et al.  Suppressing the Voltage Fading of Li[Li0.2Ni0.13Co0.13Mn0.54]O2 Cathode Material via Al2O3 Coating for Li-Ion Batteries , 2018 .

[24]  Baojun Chen,et al.  An approach to application for LiNi0.6Co0.2Mn0.2O2 cathode material at high cutoff voltage by TiO2 coating , 2014 .

[25]  Min-Joon Lee,et al.  Nickel-rich layered lithium transition-metal oxide for high-energy lithium-ion batteries. , 2015, Angewandte Chemie.

[26]  Yong Jiang,et al.  Mechanical properties of nylon-6/SiO2 nanofibers prepared by electrospinning , 2009 .

[27]  Chongmin Wang,et al.  Harnessing the concurrent reaction dynamics in active Si and Ge to achieve high performance lithium-ion batteries , 2018 .

[28]  S. Peng,et al.  First-principles study on the structural and electronic properties of Li4SiO4 and Al-doped Li4SiO4 , 2016 .

[29]  Synthesis of Li2MnO3-stabilized LiCoO2 cathode material by spray-drying method and its high-voltage performance , 2015 .

[30]  Haoshen Zhou,et al.  Fabrication of FePO4 layer coated LiNi1/3Co1/3Mn1/3O2: Towards high-performance cathode materials for lithium ion batteries , 2012 .

[31]  De-cheng Li,et al.  Effect of synthesis method on the electrochemical performance of LiNi1/3Mn1/3Co1/3O2 , 2004 .

[32]  W. H. Baur,et al.  Crystal structure of ordered Li4SiO4 , 1979 .

[33]  Biaobiao Yang,et al.  Comparative Investigation of Na2FeP2O7 Sodium Insertion Material Synthesized by Using Different Sodium Sources , 2018 .

[34]  E. Cairns,et al.  In situ-formed LiVOPO4@V2O5 core-shell nanospheres as a cathode material for lithium-ion cells , 2017 .

[35]  K. Du,et al.  Mg–Al–B co-substitution LiNi0.5Co0.2Mn0.3O2 cathode materials with improved cycling performance for lithium-ion battery under high cutoff voltage , 2016 .

[36]  Zhixing Wang,et al.  Improved high voltage electrochemical performance of Li2ZrO3-coated LiNi0.5Co0.2Mn0.3O2 cathode material , 2015 .