Na–CO2 battery with NASICON-structured solid-state electrolyte. (July 2021)

• Record Type: Journal Article
• Authors: Tong, Zizheng; Wang, Shu-Bo; Fang, Mu-Huai; Lin, Yen-Ting; Tsai, Kun-Ta; Tsai, Sung-Yu; Yin, Li-Chang; Hu, Shu-Fen; Liu, Ru-Shi
• Is Part Of: Nano energy. Volume 85(2021)
• Publication Date: 2021-07
• Subjects: Solid-state Na–CO2 battery -- NASICON -- NZSP -- Solid-state battery -- Na-metal battery; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2021.105972
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Utilizing CO2 as cathode gas, Na–CO2 battery has been intensively studied due to its potential application in the exploration of Mars, where CO2 takes up 96% of the atmosphere. However, evaporation of the flammable liquid electrolyte restricts the practical application of the Na–CO2 battery. Herein, a solid-state Na–CO2 battery has been fabricated with the help of a plastic crystal electrolyte and kinetically stable interphase. The succinonitrile-based plastic crystal electrolyte interphase makes an intimate contact between Na3 Zr2 Si2 PO12 (NZSP) and cathode, thereby promotes the interfacial charge transfer. Simultaneously, the kinetically stable interphase on the anode side is revealed by the cooperation of theoretical calculation and experiments. The kinetically stable interphase protects the NZSP from the continuous interfacial parasitic reaction. The as-proposed solid-state Na–CO2 battery delivers a life span of 50 cycles at 100 mA g −1 with a potential gap of 1.4 V. This study makes solid-state electrolyte Na–CO2 battery an attractive prospect in future applications. Graphical Abstract: Using CO2 to produce energy, Na–CO2 battery provides a reliable energy supplement for Mars exploration. ga1 Highlights: Solid-state Na–CO2 battery with inorganic solid-state electrolyte, Na3 Zr2 Si2 PO12, has been firstly reported. The concept of "tri-conductive" cathode, which is ionic, electronic, and gas conductive, has been proposed as the ideal cathode of metal–air battery. Succinonitrile, a plastic crystal electrolyte, has been employed to build an ionic conductive framework in Ru/CNT to fabricate the "tri-conductive" cathode. Kinetically stable interphase has been revealed on the anode side of NZSP by theoretical calculation and experiments.