Unraveling the Correlation between the Synthesis Time and Electrochemical Performance of Transition Metal Layered Oxides by In Situ Neutron Powder Diffraction

Hua, Yingkai1; Huang, Zhiyuan1; Li, Sen1; Chen, Siyuan1; He, Xin2; Liu, Haodong3; Feng, Jun1,4

2023-06-01

10.1021/acsaem.3c00482

ACS APPLIED ENERGY MATERIALS   影响因子和分区

2574-0962

Ni-rich layered transition metaloxides are promisingcathodesfor Li-ion batteries due to their low cost and high theoretical capacity.However, their practical applications are hindered by the capacityfading caused by intrinsic lattice structure variations, such as changesin the atom arrangement and valence. In situ neutron powder diffractionis a powerful technique for studying the structure of battery materialsand is expected to provide more information than other techniquesdue to its nondestructive, high-resolution, and light-element probingcapability. Herein, we employed neutron powder diffraction to probethe structural evolution during the synthesis of LiNi0.5Co0.2Mn0.3O2 in real time, includingthe transition metal-oxygen/lithium-oxygen (TM-O/Li-O)bond, phase formation, and lattice parameters as a function of temperatureand isothermal dwelling time. The results revealed that the latticestructure of cathode materials is a function of temperature and isothermaldwelling time. Variations of the TM-O/Li-O bond andlattice parameters with the dwelling time at an annealing temperatureof 850 degrees C indicated that the instability of the structure ofthe layered transition metal oxides may be a possible mechanism forthe changes in the discharging capacity and cycle stability of thebattery performance. Our findings provide insights into the correlationbetween the annealing time of NCM cathodes and the electrochemicalperformance and can be very helpful for synthesizing high-performancetransition metal layered oxide materials.

in situ neutron diffraction lattice structureevolution Li-ion battery annealing time NCM cathodematerials materials synthesis LiNi0 5Co0 2Mn0 3O2

SCI ; EI

英语

第一 ; 通讯

Southern University of Science and Technology and Guangdong Provincial Key Laboratory Program[2021B1212040001] ; China Postdoctoral Science Foundation[2021M701589]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:001006214600001

AMER CHEMICAL SOC

20232714333861

Cathodes ; Cobalt compounds ; Housing ; Isotherms ; Lattice constants ; Lithium compounds ; Lithium-ion batteries ; Manganese compounds ; Neutron diffraction ; Neutrons ; Powder metals ; Transition metal oxides ; X ray powder diffraction

Urban Planning and Development:403.1 ; Metallurgy and Metallography:531 ; Electronic Components and Tubes:714 ; Crystal Lattice:933.1.1

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Sichuan Univ, Sch Chem Engn, Chengdu 610017, Peoples R China
3.Univ Calif San Diego, Dept Nanoengn, La Jolla, CA 92093 USA
4.Southern Univ Sci & Technol, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Shenzhen 518055, Guangdong, Peoples R China

Hua, Yingkai,Huang, Zhiyuan,Li, Sen,et al. Unraveling the Correlation between the Synthesis Time and Electrochemical Performance of Transition Metal Layered Oxides by In Situ Neutron Powder Diffraction[J]. ACS APPLIED ENERGY MATERIALS,2023,6:6563-6571.

Hua, Yingkai.,Huang, Zhiyuan.,Li, Sen.,Chen, Siyuan.,He, Xin.,...&Feng, Jun.(2023).Unraveling the Correlation between the Synthesis Time and Electrochemical Performance of Transition Metal Layered Oxides by In Situ Neutron Powder Diffraction.ACS APPLIED ENERGY MATERIALS,6,6563-6571.

Hua, Yingkai,et al."Unraveling the Correlation between the Synthesis Time and Electrochemical Performance of Transition Metal Layered Oxides by In Situ Neutron Powder Diffraction".ACS APPLIED ENERGY MATERIALS 6(2023):6563-6571.