Citation: Ludwig, Jennifer; Alarc\'on-Suesca, Carlos; Gepr\"ags, Stephan; Nordlund, Dennis; Doeff, Marca M.; Orench, In\'es Puente; Nilges, Tom (2017). Direct synthesis and characterization of mixed-valent Li0.5−\dCoPO4, a Li-deficient derivative of the Cmcm polymorph of LiCoPO4. RSC Adv., 7, pp. 28069-.