02159nas a2200265   4500008004100000022001400041245010600055210006900161260000900230300001400239490000600253520124100259653002901500653002201529653002501551653002201576653000901598653002901607653003301636100001701669700002701686700002501713700002401738856013101762       2020                        eng d  a2168-048500aNafion lonomer-based single component electrolytes for aqueous Zn/MnO2 batteries with long cycle life0 aNafion lonomerbased single component electrolytes for aqueous Zn  cAPR   a5040-50490 v83 a<p>Recently, aqueous rechargeable Zn/MnO2 batteries are emerging as promising energy storage aids owing to their improved safety, low cost of fabrication, and high energy density. However, the rapid decay of capacity during extended charge- discharge cycles hinders the prospect of this technology beyond lab-scale. In the conventional Zn/MnO2 cell, additives such as Mn2+ have been used to tackle the stability issue. Here, we demonstrate that cycling performance of the Zn/MnO2 cell can be improved substantially by using Nafion ionomer as the separator in combination with zinc-ion conducting electrolytes. The Nafion ionomer-based Zn/MnO2 cells do not require any Mn' additive in the electrolyte and hence termed as ``single component'' electrolytes. The postmortem study of the post-cycled electrodes reveals that the structural evolution of both the anode and cathode in various electrolytes (1 M Zn(CF3SO3)(2), 1 M ZnSO4 center dot 7H(2)O, and 3 M ZnSO4 center dot 7H(2)O) during prolonged cycling significantly influences the cycle life of the respective cells. Optimizing the Nafion ionomer membrane with a suitable electrolyte could render the desired combination of high capacity and high cycle life for a Zn/MnO2 cell.</p>
10aaqueous Zn-ion batteries10aCycling stability10adendrite suppression10aElectrodeposition10aMnO210aNafion ionomer separator10asingle component electrolyte1 aGhosh, Meena1 aVijayakumar, Vidyanand1 aAnothumakkool, Bihag1 aKurungot, Sreekumar  uhttps://library.ncl.res.in/content/nafion-lonomer-based-single-component-electrolytes-aqueous-znmno2-batteries-long-cycle-life