02149nas a2200241   4500008004100000022001400041245011900055210006900174260000900243300001600252490000700268520127900275653002301554653003201577653002801609653002501637653003001662100001701692700001901709700002701728700002401755856012801779       2020                        eng d  a1944-824400aScalable synthesis of manganese-doped hydrated vanadium oxide as a cathode material for aqueous zinc-metal battery0 aScalable synthesis of manganesedoped hydrated vanadium oxide as   cOCT   a48542-485520 v123 a<p>Rechargeable aqueous zinc-metal batteries (ZMBs) are considered as potential energy storage devices for stationary applications. Despite the significant developments in recent years, the performance of ZMBs is still limited due to the lack of advanced cathode materials delivering high capacity and long cycle life. In this work, we report a low-temperature and scalable synthesis method following a surfactant-assisted route for preparing manganese-doped hydrated vanadium oxide (MnHVO-30) and its application as the cathode material for ZMB. The as-prepared material possesses a porous architecture and expanded interlayer spacing. Therefore, the MnHVO-30 cathode offers fast and reversible insertion of Zn2+ ions during the charge/discharge process and delivers 341 mAh g(-1) capacity at 0.1 A g(-1). Moreover, the MnHVO-30 parallel to Zn cell retains 82% of its initial capacity over 1200 stability cycles, which is higher compared to that of the undoped system. Besides, a quasi-solid-state home-made pouch cell with an area of 3.3 x 1.6 cm(2) and 3.6 mg cm(-2) loading is assembled, achieving 115 mAh g(-1) capacity over 100 stability cycles. Therefore, this work provides an easy and attractive way for preparing efficient cathode materials for aqueous ZMBs.</p>
10aanionic surfactant10ahydrated vanadium pentoxide10aNafion ionomer membrane10apost-lithium battery10aquasi-solid-state battery1 aGhosh, Meena1 aDilwale, Swati1 aVijayakumar, Vidyanand1 aKurungot, Sreekumar  uhttps://library.ncl.res.in/content/scalable-synthesis-manganese-doped-hydrated-vanadium-oxide-cathode-material-aqueous-zinc02085nas a2200229   4500008004100000022001400041245013800055210006900193260000800262300001400270490000600284520125800290100002701548700001701575700001801592700002401610700001701634700002301651700002501674700002401699856013201723       2021                        eng d  a2398-490200aSulfonated polyvinyl alcohol ionomer membrane favoring smooth electrodeposition of zinc for aqueous rechargeable zinc metal batteries0 aSulfonated polyvinyl alcohol ionomer membrane favoring smooth el  cOCT  a5557-55640 v53 aOne of the failure mechanisms of aqueous rechargeable zinc metal batteries (AZMBs) involves high surface area zinc (HSAZ)/dendrite-like deposits over the Zn-metal anode during long-term cycling. Negatively charged (anionic) polymeric ionomer electrolyte membranes and separators are known for suppressing the dendrite-/HSAZ-induced failure of AZMBs. However, the preparation of cost-effective and non-fluorinated ionomers from cheap and environmentally friendly polymers is essential to leverage the feasibility of AZMBs. The current work demonstrates the potential of an ionomer electrolyte membrane (P-AS-C-Zn) made by the crystallization-induced physical cross-linking of sulfonated poly (vinyl alcohol) (PVS) and poly (vinyl alcohol) (PVA) as a dendrite-/HSAZ-inhibiting separator for AZMBs. The P-AS-C-Zn membranes exhibited excellent Zn plating/stripping behavior with a stable voltage vs. time profile beyond 1100 h, compared to their neutral PVA-C-Zn counterpart without any ionomer character (cell failure at close to 280 h). Applying the optimized P-AS-C-Zn membrane in a MnO2||Zn full cell helps retain about 50% of the initial capacity close to 600 cycles in the absence of extra manganese salt in the electrolyte, which is indeed promising.1 aVijayakumar, Vidyanand1 aTorris, Arun1 aKurian, Maria1 aMathew, Megha, Mary1 aGhosh, Meena1 aKhairnar, Ajay, B.1 aBadiger, Manohar, V.1 aKurungot, Sreekumar  uhttps://library.ncl.res.in/content/sulfonated-polyvinyl-alcohol-ionomer-membrane-favoring-smooth-electrodeposition-zinc-aqueous