@article {47006,
	title = {Dioxolanone-anchored poly(allyl ether)-based cross-linked dual-salt polymer electrolytes for high-voltage lithium metal batteries},
	journal = {ACS Applied Materials \& Interfaces},
	volume = {12},
	year = {2020},
	month = {JAN },
	pages = {567-579},
	type = {Article},
	abstract = {<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>
},
	keywords = {cross-linked polymer electrolyte, dual-salt electrolyte, high-voltage cathode, lithium metal battery, solvent-free photopolymerization},
	issn = {1944-8244},
	doi = {10.1021/acsami.9b16348},
	author = {Vijayakumar, Vidyanand and Diddens, Diddo and Heuer, Andreas and Kurungot, Sreekumar and Winter, Martin and Nair, Jijeesh Ravi}
}
@article {48366,
	title = {Formation of the secondary phase domain by multi-cation substitution for the superior electrochemical performance of spinel cathodes for high-voltage li-ion batteries},
	journal = {ACS Applied Energy Materials},
	volume = {5},
	year = {2022},
	month = {DEC},
	pages = {15345-15355},
	type = {Article},
	abstract = {<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>
},
	keywords = {5Ni0, cation-doped spinel cathode material, cobalt-free cathode, disorder structured spinel cathode material, high-voltage cathode, li-ion batteries, LiMn1},
	issn = {2574-0962},
	doi = {10.1021/acsaem.2c02667},
	author = {Nayaka, Girish Praveen and Shivamurthy, Bogalera Papaiah and Thripuranthaka, Marulasiddappa and Shelke, V. Manjusha.}
}
