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The Construction of Highly Conductive Framework in Mn3O4@C-MWCNTs Slurry for Aqueous Zinc-Based Semi-Solid Flow
Haoxuan Yan1, Bowen Yang2, Chao Chen3
1Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
Abstract:
Aqueous zinc-based semi-solid flow batteries (AZSSFBs) are promising large-scale energy storage devices due to their low cost and superior safety. The formation of a conductive network in the slurry plays an important role in the capacity of active materials and the stability of suspension. Meanwhile, the suspension stability of the slurry will determine the cycle life of AZSSFBs. Herein, metal-organic-framework-derived carbon-coated Mn3O4@C composites are fabricated and dispersed in the aqueous electrolyte to construct a stable 3D conductive carbon framework in slurry by combining multi-walled carbon nanotubes (MWCNTs). The 3D conductive carbon framework can not only facilitate rapid electron transportation, but also enhance the suspension stability of slurry, ensuring stable electron conduction for Mn3O4 in the fluidic semi-solid slurry. Based on Mn3O4@C-MWCNTs semi-solid slurry, AZSSFBs display enhanced electrochemical performance.
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