Laser-induced graphene synthesis of Co3O4 in graphene for oxygen electrocatalysis and metal-air batteries. (November 2018)

• Record Type: Journal Article
• Authors: Ren, Muqing; Zhang, Jibo; Tour, James M.
• Is Part Of: Carbon. Volume 139(2018)
• Page Start: 880
• Page End: 887
• Publication Date: 2018-11
• Subjects: Electrochemistry -- Oxygen evolution reaction -- Oxygen reduction reaction -- Laser-induced graphene -- Metal-O2 battery; Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2018.07.051
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: We present here a straightforward synthesis of highly efficient bifunctional OER/ORR catalysts through a facile laser-induced graphene (LIG) process to produce Co3 O4 /LIG. The Co3 O4 /LIG showed OER and ORR activity comparable to noble metal-based catalysts in alkaline electrolyte. Furthermore, the Co3 O4 /LIG exhibited promising performance in Zn-air and Li-O2 batteries. The rechargeable Zn-air battery has an open-circuit potential of 1.46 V and a high power density of 84.2 mW/cm 2 at 100 mA/cm 2 . The Li-O2 battery with the Co3 O4 /LIG cathode exhibits low overpotentials in both charge and discharge processes and excellent cycling stability up to 242 cycles. Graphical abstract: Image 1