Abstract
Aqueous Zinc–polyaniline (Zn-PANI) batteries have attracted attention due to their high safety and low cost but they suffer from the limited water electrochemical window (1.23 V), fast capacitance decay derived from the structural instability of PANI, and poor electroactivity of PANI in low acidic electrolytes due to its de-protonation. Herein, we firstly report a decoupling design of acid-alkaline electrolyte to maximize the electrochemical window of the electrolyte and optimize the redox chemistry of both PANI cathode and Zn anode. The PANI electrode delivers a higher stability in H2SO4 electrolytes than the conventional Zn2+ neutral or weakly acidic electrolytes. The optimized electrolyte-decoupling Zn-PANI (EDZPB) battery exhibits an expanded electrochemical stability window over 2 V, a high capacity of 213.3 mAh g−1 at 0.1 A g−1, and a high cycling life stability (only 6.8% loss after 3000 cycles), showing the great potential of the design for applications in large-scale energy storage.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
