RT Journal Article T1 Opening the door to liquid-free polymer electrolytes for calcium batteries A1 Martínez Cisneros, Cynthia Susana A1 Fernández Gorgojo, Andrea A1 Antonelli, C. A1 Levenfeld Laredo, Belén A1 Varez, Alejandro A1 Vezzù, K. A1 Di Noto, Vito A1 Sánchez, Jean Yves AB This work studies calcium-conducting, solvent-free polymer electrolytes in the framework of today's post-lithium battery strategies. The samples consist of three calcium salts: (i) Ca(CF3SO3)2; (ii) Ca(TFSI)2; and (iii) CaI2 hosted by commercial poly (oxyethylene) (POE). The data collected from X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) indicate that the polymer electrolytes consist of stable macromolecular solutions of these calcium salts. The polymer electrolytes yield conductivities exceeding 0.1 mS cm(-1); POE-Ca(CF3SO3)2 reaching, at the moderate concentration O/Ca = 30, a conductivity of 0.47 mS cm(-1). This preliminary and fundamental study, which demonstrates the stability of Ca-conducting polymer electrolytes, paves the way to the development of improved polymer electrolytes based on oxyethylene repeat units and new calcium salts PB Elsevier SN 0013-4686 YR 2020 FD 2020-09-01 LK https://hdl.handle.net/10016/31257 UL https://hdl.handle.net/10016/31257 LA eng NO This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 829145 (FETOPEN-VIDICAT). V. Di Noto thanks the University Carlos III of Madrid for the “C atedras de Excelencia UC3M-Santander” (Chair of ExcellenceUC3M-Santander). DS e-Archivo RD 27 jul. 2024