Journal Article10.1002/ANIE.201808886
A Long-Cycle-Life Self-Doped Polyaniline Cathode for Rechargeable Aqueous Zinc Batteries
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TL;DR: This study synthesized a sulfo-self-doped PANI cathode by a facile electrochemical copolymerization process and opens a door for the use of conducting polymers as cathode materials for high-performance rechargeable zinc batteries.
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Abstract: Rechargeable aqueous zinc batteries are promising energy-storage systems for grid applications. Highly conductive polyaniline (PANI) is a potential cathode, but it tends to deactivate in electrolytes with low acidity (i.e. pH >1) owing to deprotonation of the polymer. In this study, we synthesized a sulfo-self-doped PANI electrode by a facile electrochemical copolymerization process. The -SO3 - self-dopant functions as an internal proton reservoir to ensure a highly acidic local environment and facilitate the redox process in the weakly acidic ZnSO4 electrolyte. In a full zinc cell, the self-doped PANI cathode provided a high capacity of 180 mAh g-1 , excellent rate performance of 70 % capacity retention with a 50-fold current-density increase, and a long cycle life of over 2000 cycles with coulombic efficiency close to 100 %. Our study opens a door for the use of conducting polymers as cathode materials for high-performance rechargeable zinc batteries.
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References
Lithium n-Doped Polyaniline as a High-Performance Electroactive Material for Rechargeable Batteries.
Pablo Jiménez,Eric Levillain,Olivier Alévêque,Dominique Guyomard,Bernard Lestriez,Joël Gaubicher +5 more
TL;DR: A combination of UV/Vis-NIR spectroelectrochemistry, XPS, FTIR, and EQCM characterization allowed a unified description of the chemical and electrochemical behavior, showing facile charge delocalization of the doped states and the reversibility of the redox processes in this form of polyaniline.
113
Nanostructured Polyaniline–Cellulose Papers for Solid-State Flexible Aqueous Zn-Ion Battery
TL;DR: In this article, a solid-state flexible aqueous Zn-ion battery was fabricated with nanostructured polyaniline-cellulose papers as the cathode and Zn grown graphite papers as anode.
113
Effect of self-doped polyaniline on performance of secondary Zn-polyaniline battery
TL;DR: In this article, the characteristics of aniline and m -aminobenzoic acid copolymer (SDPA) are studied in aqueous electrolytes, and the SDPA films are deposited on a platinum electrode by means of cyclic voltammetry.
88
Sulfonated Polyaniline Nanostructures Synthesized via Rapid Initiated Copolymerization with Controllable Morphology, Size, and Electrical Properties
Yaozu Liao,Yaozu Liao,Yaozu Liao,Veronica Strong,Wei Chian,Xia Wang,Xin-Gui Li,Richard B. Kaner +7 more
TL;DR: In this article, an initiator-assisted route to sulfonated polyaniline (SPANi) nanostructures was proposed by rapidly copolymerizing o-aminobenzenesulfonic acid with aniline or its derivatives in the presence of a catalytic amount of the initiator dimer.
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