A nanofibrillated cellulose/Al(OH)3/polytetrafluoroethylene hybrid protective layer enabling dendrite free Zn anodes for rechargeable aqueous batteries

Literature Information

Publication Date 2024-01-05
DOI 10.1039/D3TA05655D
Impact Factor 12.732
Authors

Mohammad Shayan, Wangwang Xu, Tongyao Wu, Qinglin Wu


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Abstract

Aqueous zinc ion batteries (ZIBs) are considered as promising options for energy storage devices due to their high safety and abundant resources. However, Zn dendrites and short circuits pose a significant challenge. To address these issues, a hybrid protective membrane of nanofibrillated cellulose (NFC)/Al(OH)3/polytetrafluoroethylene (PTFE) was fabricated and coated on the surface of a zinc metal anode. The in situ formation of Al(OH)3 nanoparticles created nano-pores inside the dense NFC network, while the addition of PTFE improved the adhesion of the protective membrane to the surface of zinc metal. The NFC/Al(OH)3/PTFE coating layer restricted the access of active water and anions to the electrode/electrolyte interface by dehydrating zinc ions, thus preventing water and anion-induced corrosion. With the NFC/Al(OH)3/PTFE coating layer, zinc symmetric batteries exhibited significantly improved cycling performance with highly stabilized charge/discharge profiles, outperforming bare zinc symmetric batteries. Furthermore, full vanadium dioxide (VO2)||NFC/Al(OH)3/PTFE@Zn batteries demonstrated a high initial specific capacity of 406.2 mA h g−1 at 2 A g−1 and excellent cycling stability with a 94% retention of initial capacity after 300 cycles, and 72% after 3300 cycles, making them practical for energy storage applications.

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Journal of Materials Chemistry A

Journal of Materials Chemistry A
CiteScore: 19.5
Self-citation Rate: 4.7%
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