A Solid Redox Mediator Analog as a Highly Efficient Catalyst for Na–O2 Batteries

• Published in: Batteries (Basel) Vol. 8; no. 11; p. 227
• Main Authors: Shen, Qin-yin, Ma, Jin-ling, Li, Ming-lu, He, Wei, Tan, Ying-yue, Zhou, Peng-yu, Wang, Yu
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.11.2022
• Subjects: Batteries; Bismuth oxides; BiVO4 photocatalyst; Carbon; Catalysts; Cathodic polarization; Chemical reduction; Crystal defects; Discharge; Electrodes; Electrolytes; Electron transfer; Energy consumption; Energy gap; fast electron transfer; Lasers; low overpotential; Mass transfer; Morphology; Na–O2 batteries; Oxygen evolution reactions; Oxygen reduction reactions; photo-assistance; Photocatalysis; Sodium; Spectrum analysis; Surface area; Vanadates; Japan

During the discharge of Na–O2 batteries, O2 is reduced and combines with Na+ to form an insulating solid sodium oxide on the cathode, which severely hinders the mass transfer path, resulting in high polarization voltage, low energy efficiency, and short battery life. Hereby, we proposed a novel illu...