Co3O4 Nanosheets as Active Material for Hybrid Zn Batteries
MetadataShow full item record
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. The rapid development of electric vehicles and modern personal electronic devices is severely hindered by the limited energy and power density of the existing power sources. Here a novel hybrid Zn battery is reported which is composed of a nanostructured transition metal oxide-based positive electrode (i.e., Co 3 O 4 nanosheets grown on carbon cloth) and a Zn foil negative electrode in an aqueous alkaline electrolyte. The hybrid battery configuration successfully combines the unique advantages of a Zn–Co 3 O 4 battery and a Zn–air battery, achieving a high voltage of 1.85 V in the Zn–Co 3 O 4 battery region and a high capacity of 792 mAh g Zn -1 . In addition, the battery shows high stability while maintaining high energy efficiency (higher than 70%) for over 200 cycles and high rate capabilities. Furthermore, the high flexibility of the carbon cloth substrate allows the construction of a flexible battery with a gel electrolyte, demonstrating not only good rechargeability and stability, but also reasonable mechanical deformation without noticeable degradation in performance. This work also provides an inspiring example for further explorations of high-performance hybrid and flexible battery systems.
Showing items related by title, author, creator and subject.
Tan, P.; Kong, W.; Shao, Zongping; Liu, M.; Ni, M. (2017)© 2017 Li–air batteries have potential to be the next generation power sources for various applications, from portable devices to electric vehicles and microgrids, due largely to their significantly higher theoretical ...
Tan, P.; Chen, B.; Xu, H.; Cai, W.; He, W.; Zhang, H.; Liu, M.; Shao, Zongping; Ni, M. (2018)© 2018 American Chemical Society. We report a hybrid battery that integrates a Zn-Ag battery and a Zn-air battery to utilize the unique advantages of both battery systems. In the positive electrode, Ag nanoparticles couple ...
Nanoporous NiO/Ni(OH)2 plates incorporated with carbon nanotubes as active materials of rechargeable hybrid zinc batteries for improved energy efficiency and high-rate capabilityTan, P.; Chen, B.; Xu, H.; Cai, W.; Liu, M.; Shao, Zongping; Ni, M. (2018)© 2018 The Electrochemical Society. Although rechargeable zinc-air batteries are one of the promising power sources, the commercialization is hindered by a variety of technical hurdles, especially the low energy efficiency ...