@article {49112,
	title = {Wide temperature enhanced sodium storage in tailored, sustainable sodiophilic biphasic N-doped carbon},
	journal = {Materials Today Chemistry },
	volume = {37},
	year = {2024},
	month = {APR},
	type = {Article},
	abstract = {<p>
	Alternative to Li-ion batteries(LIB), Na-ion batteries (NIB) and Na metal batteries (NMB) are gaining significant attention due to their low cost, abundance, and safety. By modulating microstructural properties such as graphitization, heteroatom doping, surface-rich functional groups, and interlayer d-spacing, Na-ion storage in NIB and Na plating/striping in NMB can be ameliorated. This study reports sodiophilic N-doped polymer-derived carbon (PDC) as an anode for NIB and host for Na metal in NMB. As NIB anode, PDC provides a storage capacity of 173 mAh g- 1 at 1 A g- 1 in half-cell and 84 mAh g- 1 at 1C (1C = 128 mAhg- 1) in full-cell with Na3V2(PO4)2F3 (NVPF) cathode. As Na metal anode (NMA) host, a high columbic efficiency (C.E.) of 99.45\% for over 1000 cycles at 6 mA cm- 2_4 mAh cm-2 is obtained. Furthermore, fascinating wide temperature (50 degrees C and -20 degrees C) sodiumion storage is successfully demonstrated by PDC. Advanced X-ray photoelectron spectroscopy (XPS) confirmed the formation of stable and uniform solid electrolyte interphase (SEI) composed of inorganic and organic components, X-ray microtomography confirmed uniform Na plating throughout the volume of the electrode analogous to Brunauer-Emmett-Teller (BET) surface area, Raman spectroscopy, X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) results. A sustainable and scalable promising biphasic NIB anode and sodiophilic host for Na metal was possible due to larger d-spacing, partial graphitization, high mesoporosity, N-doping, presence of surface functional groups, better charge transfer, and diffusion properties.</p>
},
	keywords = {Full-cell, Low and elevated temperatures, Na metal host, Polymer-derived carbon, Sodium-ion battery, X-ray tomography},
	issn = {2468-5194},
	doi = {10.1016/j.mtchem.2024.101978},
	author = {Yadav, Poonam and Das, Anoushka K. and Torris, Arun and Wasnik, Kundan and Koppisetti, Heramba Venkata Sai Rama Murthy and Pol, Vilas G. and Shelke, Vilas and Shelke, Manjusha}
}
@article {49495,
	title = {Unlocking enhanced redox dynamics: the power of a bifunctional catalytic zinc phosphide interface in full cell and pouch lithium-sulfur batteries},
	journal = {ACS Applied Materials \& Interfaces},
	volume = {17},
	year = {2025},
	month = {JAN},
	pages = {7657-7669},
	type = {Article},
	abstract = {<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>
},
	keywords = {catalytic interlayer, full cell, lithium dendrite, lithium sulfur battery, polysulfide shuttling, pouchcell},
	issn = {1944-8244},
	doi = {10.1021/acsami.4c17192},
	author = {Das, Anoushka K. and Yadav, Poonam and Verma, Tushar S. and Marulasiddappa, Thripuranthaka and Krishnamurty, Sailaja and Shelke, Manjusha V.}
}
