03056nas a2200265   4500008004100000022001400041245013400055210006900189260000900258300001200267490000700279520209000286653003702376653002602413653002502439653002602464653003702490100002702527700001902554700001902573700002402592700001902616700002402635856013102659       2020                        eng d  a1944-824400aDioxolanone-anchored poly(allyl ether)-based cross-linked dual-salt polymer electrolytes for high-voltage lithium metal batteries0 aDioxolanoneanchored polyallyl etherbased crosslinked dualsalt po  cJAN   a567-5790 v123 a<p>Novel cross-linked polymer electrolytes (XPEs) are synthesized by free-radical copolymerization induced by ultraviolet (UV)-light irradiation of a reactive solution, which is composed of a difunctional poly(ethylene glycol) diallyl ether oligomer (PEGDAE), a monofunctional reactive diluent 4-vinyl-1,3-dioxolan-2-one (VEC), and a stock solution containing lithium salt (lithium bis(trifluoromethanesulfonyl)imide, LiTFSI) in a carbonate-free nonvolatile plasticizer, poly(ethylene glycol) dimethyl ether (PEGDME). The resulting polymer matrix can be represented as a linear polyethylene chain functionalized with cyclic carbonate (dioxolanone) moieties and cross-linked by ethylene oxide units. A series of XPEs are prepared by varying the [O]/[Li] ratio (24 to 3) of the stock solution and thoroughly characterized using physicochemical (thermogravimetric analysis-mass spectrometry, differential scanning calorimetry, NMR, etc.) and electrochemical techniques. In addition, quantum chemical calculations are performed to elucidate the correlation between the electrochemical oxidation potential and the lithium ion-ethylene oxide coordination in the stock solution. Later, lithium bis(fluorosulfonyl)imide (LiFSI) salt is incorporated into the electrolyte system to produce a dual-salt XPE that exhibits improved electrochemical performance, a stable interface against lithium metal, and enhanced physical and chemical characteristics to be employed against high-voltage cathodes. The XPE membranes demonstrated excellent resistance against lithium dendrite growth even after reversibly plating and stripping lithium ions for more than 1000 h with a total capacity of 0.5 mAh cm(-2). Finally, the XPE films are assembled in a lab-scale lithium metal battery configuration by using carbon-coated LiFePO4 (LFP) or LiNi0.8Co0.15Al0.05O2 (NCA) as a cathode and galvanostatically cycled at 20, 40, and 60 degrees C. Remarkably, at 20 degrees C, the NCA-based lithium metal cells displayed excellent cycling stability and good capacity retention (&gt;50%) even after 1000 cycles.</p>
10across-linked polymer electrolyte10adual-salt electrolyte10ahigh-voltage cathode10alithium metal battery10asolvent-free photopolymerization1 aVijayakumar, Vidyanand1 aDiddens, Diddo1 aHeuer, Andreas1 aKurungot, Sreekumar1 aWinter, Martin1 aNair, Jijeesh, Ravi  uhttps://library.ncl.res.in/content/dioxolanone-anchored-polyallyl-ether-based-cross-linked-dual-salt-polymer-electrolytes-high01363nas a2200265   4500008004100000022001400041245017100055210006900226260000800295300001600303490000600319520035100325653000900676653004100685653002400726653004800750653002500798653002100823653001000844100002800854700003500882700003500917700002200952856012300974       2022                        eng d  a2574-096200aFormation of the secondary phase domain by multi-cation substitution for the superior electrochemical performance of spinel cathodes for high-voltage li-ion batteries0 aFormation of the secondary phase domain by multication substitut  cDEC  a15345-153550 v53 a<p>
	{Disorder-structured spinel oxides are opening frontiers for high-capacity/high-voltage cathodes to meet the challenges of independ-ence on cobalt-containing cathodes toward cheap and sustainable energy storage sources in Li-ion batteries (LIBs). In the present work, a series of Co-free materials: LiMn2-x-y-zNixFeyAlzO4 (x = 0.8-0.5</p>
10a5Ni010acation-doped spinel cathode material10acobalt-free cathode10adisorder structured spinel cathode material10ahigh-voltage cathode10ali-ion batteries10aLiMn11 aNayaka, Girish, Praveen1 aShivamurthy, Bogalera, Papaiah1 aThripuranthaka, Marulasiddappa1 aShelke, Manjusha.  uhttps://library.ncl.res.in/content/formation-secondary-phase-domain-multi-cation-substitution-superior-electrochemical