Synthesis design of interfacial nanostructure for nickel-rich layered cathodes

Zhang，Lihan1,2; Wang，Shuwei1,2; Zhu，Liang3; He，Lunhua4,5,6; He，Shun1; Qin，Xianying1; Zhao，Chenglong1; Kang，Feiyu1,2; Li，Baohua1

2022-06-15

10.1016/j.nanoen.2022.107119

Nano Energy   影响因子和分区

2211-2855

2211-3282

High-energy nickel-rich layered oxide cathodes are one kind of the promising materials to electric vehicles powered by lithium-ion batteries. However, grain boundary structure and chemistry disintegration show the most serious challenges for these cathodes at long-term cycles, particularly under extreme temperatures and high voltages. Herein, we present a sustainable synthesis route to achieve a uniform surface/interface-coating of nickel-rich layered oxide secondary particles as well as grain boundaries. The obtained cathodes demonstrate dramatically enhanced rate capability and cycling stability in a wide temperature range from −40 ℃ to 60 ℃ even charged to the high cut-off voltage of 4.5 V. Moreover, the cathodes display a high humidity tolerance with scarcely any sign of impurity after exposure to an atmosphere with 98% relative humidity. The highly dense and resistive fluorine- and cobalt-rich interphase structures can effectively protect the particles from the simultaneous degradation of surface structure and side reactions with electrolytes at cycling. This facile interfacial nanostructure is further demonstrated with lower interface energy, facilitating the lithium-ions transport with lower interface impedance and improved stability. Thereby, this synthesis perspectives provide the new insights of nickel-rich lithium cathodes at grain boundary dimensions.

High voltage Humidity tolerance Interfacial nanostructure Nickel-rich cathode Wide-temperature operation

SCI ; EI

英语

其他

China Postdoctoral Science Foundation[2020M680541];National Natural Science Foundation of China[51802221];National Natural Science Foundation of China[51872157];National Natural Science Foundation of China[52072208];

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000791262400003

ELSEVIER

20221311850921

Cathodes ; Disintegration ; Grain boundaries ; Lithium-ion batteries ; Nickel oxide ; Surface structure

Nanotechnology:761 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Solid State Physics:933 ; Materials Science:951

2-s2.0-85127001074

Scopus

1.Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center,Tsinghua Shenzhen International Graduate School,Shenzhen,518055,China
2.Laboratory of Advanced Materials,School of Materials Science and Engineering,Tsinghua University,Beijing,100084,China
3.Department of Physics and Shenzhen Key Laboratory of for Advanced Quantum Functional Materials and Devices,South University of Science and Technology of China,Shenzhen,518055,China
4.Spallation Neutron Source Science Center,Dongguan,523803,China
5.Songshan Lake Materials Laboratory,Dongguan,523803,China
6.Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing,100190,China

Zhang，Lihan,Wang，Shuwei,Zhu，Liang,et al. Synthesis design of interfacial nanostructure for nickel-rich layered cathodes[J]. Nano Energy,2022,97.

Zhang，Lihan.,Wang，Shuwei.,Zhu，Liang.,He，Lunhua.,He，Shun.,...&Li，Baohua.(2022).Synthesis design of interfacial nanostructure for nickel-rich layered cathodes.Nano Energy,97.

Zhang，Lihan,et al."Synthesis design of interfacial nanostructure for nickel-rich layered cathodes".Nano Energy 97(2022).