02138nas a2200193 4500008004100000245008500041210006900126260000800195300001200203490000600215520149500221100001801716700001801734700001501752700002201767700002501789700001901814856011101833 2024 eng d00aGlory of fire retardants in Li-ion batteries: could they be intrinsically safer?0 aGlory of fire retardants in Liion batteries could they be intrin cOCT a24002730 v83 a

Lithium-ion batteries (LIBs) have dramatically transformed modern energy storage, powering a wide range of devices from portable electronics to electric vehicles, yet the use of flammable liquid electrolytes raises thermal safety concerns. Researchers have investigated several ways to enhance LIB's fire resistance. Fire retarding molecules functions through cooling effects, scavenging radicals, and forming protective barriers. Incorporating fire-suppressing molecules within the LIBs aims to delay or mitigate thermal runaway scenarios, reducing the risks of fires or explosions. Achieving an optimal balance between safety and performance is a major obstacle in the design of intrinsically safer LIBs. Therefore, it is important to consider their effects on LIB's performance, long-term stability, and environmental impact. To overcome these challenges, collaborative research efforts among academia, industry, and regulatory sectors are necessary. This article reviews state-of-the-art literature associated with LIBs safety or even fire mitigation by introducing solid-state or quasi-solid-state electrolytes as well as modified liquid electrolytes. Moreover, the effectiveness of various strategies in making LIBs intrinsically safer is critically evaluated with an emphasis on fire retardants followed by shedding some light on the remaining challenges.

1 aMishra, Rajat1 aAnne, Mounika1 aDas, Sayan1 aChavva, Tarunikaa1 aShelke, Manjusha, V.1 aPol, Vilas, G. uhttp://library.ncl.res.in/content/glory-fire-retardants-li-ion-batteries-could-they-be-intrinsically-safer02634nas a2200289 4500008004100000022001400041245010600055210006900161260000800230490000700238520166300245653001401908653003401922653001801956653002701974653002302001653002102024100001802045700002202063700001702085700001902102700003602121700001902157700001802176700002102194856012902215 2024 eng d a2468-519400aWide temperature enhanced sodium storage in tailored, sustainable sodiophilic biphasic N-doped carbon0 aWide temperature enhanced sodium storage in tailored sustainable cAPR0 v373 a

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.

10aFull-cell10aLow and elevated temperatures10aNa metal host10aPolymer-derived carbon10aSodium-ion battery10aX-ray tomography1 aYadav, Poonam1 aDas, Anoushka, K.1 aTorris, Arun1 aWasnik, Kundan1 aKoppisetti, Heramba, Venkata Sa1 aPol, Vilas, G.1 aShelke, Vilas1 aShelke, Manjusha uhttp://library.ncl.res.in/content/wide-temperature-enhanced-sodium-storage-tailored-sustainable-sodiophilic-biphasic-n-doped