title: Toothpaste-like Electrode: A Novel Approach to Optimize the Interface for Solid-State Sodium-Ion Batteries with Ultralong Cycle Life.
abstract: A non-sintered method with toothpaste electrode for improving electrode ionic conductivity and reducing interface impedance is introduced in solid-state rechargeable batteries. At 70 °C, this novel solid-state battery can deliver a capacity of 80 mAh g-1in a voltage range of 2.5-3.8 V at 0.1C rate using layered oxide Na0.66Ni0.33Mn0.67O2, Na-β″-Al2O3and sodium metal as cathode, electrolyte and anode, respectively. Moreover, the battery shows a superior stability and high reversibility, with a capacity retention of 90% after 10 000 cycles at 6C rate and a capacity of 79 mAh g-1is recovered when the current rate is returned to 0.1C. Furthermore, a very thick electrode with active material mass loading of 6 mg cm-2also presents a reasonable electrochemical performance. These results demonstrate that this is a promising approach to solve the interface problem and would open a new route in designing the next generation solid-state battery.
authors.affiliation: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|School of Physical Sciences, University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Lilu
authors.initials: L
authors.lastname: Liu
authors.affiliation: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|School of Physical Sciences, University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Xingguo
authors.initials: X
authors.lastname: Qi
authors.affiliation: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , 1037 Luoyu Road, Wuhan 430074, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Ma
authors.affiliation: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|School of Physical Sciences, University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Rong
authors.affiliation: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|School of Physical Sciences, University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Yong-Sheng
authors.initials: YS
authors.lastname: Hu
authors.affiliation: Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , 1037 Luoyu Road, Wuhan 430074, China.
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|School of Physical Sciences, University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Li
authors.affiliation: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|School of Physical Sciences, University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Xuejie
authors.initials: X
authors.lastname: Huang
authors.affiliation: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.|School of Physical Sciences, University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Liquan
authors.initials: L
authors.lastname: Chen
keywords: Na-β″-Al2O3; ionic liquid; sodium-ion batteries; solid-state; toothpaste