RT Journal Article
T1 Properties and Applications of Metal Phosphates and Pyrophosphates as Proton Conductors
A1 Pérez-Colodrero, Rosario Mercedes
A1 Olivera-Pastor, Pascual
A1 Cabeza-Díaz, Aurelio
A1 Bazaga-García, Montse
K1 Fosfatos
K1 Protones
AB We review the progress in metal phosphate structural chemistry focused on proton conductivity properties and applications. Attention is paid to structure–property relationships, which ultimately determine the potential use of metal phosphates and derivatives in devices relying on proton conduction. The origin of their conducting properties, including both intrinsic and extrinsicconductivity, is rationalized in terms of distinctive structural features and the presence of specific proton carriers or the factors involved in the formation of extended hydrogen-bond networks. To make the exposition of this large class of proton conductor materials more comprehensive, we group/combine metal phosphates by their metal oxidation state, starting with metal (IV) phosphates and pyrophosphates, considering historical rationales and taking into account the accumulated bodyof knowledge of these compounds. We highlight the main characteristics of super protonic CsH2PO4, its applicability, as well as the affordance of its composite derivatives. We finish by discussing relevant structure–conducting property correlations for divalent and trivalent metal phosphates. Overall, emphasis is placed on materials exhibiting outstanding properties for applications as electrolyte components or single electrolytes in Polymer Electrolyte Membrane Fuel Cells and IntermediateTemperature Fuel Cells.
PB MDPI
YR 2022
FD 2022-02-09
LK https://hdl.handle.net/10630/23872
UL https://hdl.handle.net/10630/23872
LA eng
NO Materials 2022, 15, 1292
NO This research was funded by PID2019􀀀110249RB-I00 (MICIU/AEI, Spain) and PY20-00416 (Junta de Andalucia, Spain/FEDER) research projects.M.B.-G. thanks PAIDI2020 research grant (DOC_00272 Junta de Andalucia, Spain) and R.M.P.C. thanks University of Malaga under Plan Propio de Investigación for financial support.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026