A new step in the development of Zn/LiFePO4 aqueous battery. (2017)

• Record Type: Journal Article
• Authors: Molkenova, A.; Belgibayeva, A.; Ibrayeva, D.; Sultanov, M.; Zhumagali, S.; Akhmetova, N.; Hara, T.; Bakenov, Z.
• Is Part Of: Materials today. Volume 4:Number 3(2017)Part A
• Page Start: 4452
• Page End: 4457
• Publication Date: 2017
• Subjects: 3D structured electrode -- aqueous rechargeable lithium-ion battery -- electrodeposition -- electropolymerization -- polymer coating; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2017.04.017
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: In recent years, aqueous batteries have gained much attention due to their low production cost and exceptional safety compared to commercial Li-ion battery systems. Three-dimensional (3D) structure could be promising to enhance these batteries energy capacity. In this work, the electrochemical performance of 3D Zn electrode, developed for aqueous rechargeable Zn/LiFePO4 (Zn/LFP) battery system, was studied. Formation of uniformly coated Zn metal on the three-dimensionally organized carbon fibers was verified by field emission scanning electron microscopy (FE-SEM). The electrochemical performance of the battery with this anode was tested for over 50 cycles, where the initial capacity decayed by 11%. Further, poly(methyl methacrylate) (PMMA) and poly(p-phenylene oxide) (PPO) polymer coatings were extensively investigated as a potential separator for the 3D aqueous battery system. Cyclability of PMMA-coated Zn anode was better than that of "plane" Zn; however, the initial capacity of 3D Zn anode was lower than that for the counterpart system.