02418nas a2200277   4500008004100000022001400041245015000055210006900205260000800274300001400282490000700296520143000303653002501733653001401758653002101772653002701793653002601820653001401846100002201860700001801882700002201900700003501922700002601957700002501983856013202008       2025                        eng d  a1944-824400aUnlocking enhanced redox dynamics: the power of a bifunctional catalytic zinc phosphide interface in full cell and pouch lithium-sulfur batteries0 aUnlocking enhanced redox dynamics the power of a bifunctional ca  cJAN  a7657-76690 v173 a<p>
	Lithium-sulfur (Li-S) batteries face significant challenges, such as polysulfide dissolution, sluggish reaction kinetics, and lithium anode corrosion, hindering their practical application. Herein, we report a highly effective approach using a zinc phosphide (ZnP2) bifunctional catalyst to address these issues. The ZnP2 catalyst effectively anchors lithium polysulfides (LiPSs), catalytically reactivates them, and enhances lithium-ion diffusion. Utilizing a ZnP2-modified separator in a Li-S half-cell achieves an impressive initial capacity of 1145.4 mAh g-1, retaining 954 mAh g-1 and 99.8% Coulombic efficiency after 100 cycles, compared to the pristine separator. The underlying reaction mechanisms are thoroughly investigated through post-mortem analyses and density functional theory (DFT) calculations. Moreover, a Li-S full cell with an E/S ratio of 10 mu L mg-1 demonstrates stable cycling performance, achieving an initial capacity of 797.5 and 534 mAh g-1 after 100 cycles at 0.1C, with a negative-to-positive mass ratio of 3:1. Additionally, the real-world feasibility of lightweight and flexible Li-S pouch batteries with ZnP2-modified separators is explored, showing a stable performance over 100 cycles at 0.1C with 80% capacity retention. This engineered separator can be integrated with advanced sulfur cathodes to create high-energy-density, stable Li-S batteries for commercial applications.</p>
10acatalytic interlayer10afull cell10alithium dendrite10alithium sulfur battery10apolysulfide shuttling10apouchcell1 aDas, Anoushka, K.1 aYadav, Poonam1 aVerma, Tushar, S.1 aMarulasiddappa, Thripuranthaka1 aKrishnamurty, Sailaja1 aShelke, Manjusha, V.  uhttps://library.ncl.res.in/content/unlocking-enhanced-redox-dynamics-power-bifunctional-catalytic-zinc-phosphide-interface-full