RT journal article
T1 2D Co-Mo-Hydroxide-Based Multifunctional Material for the Development of H2-Based Clean Energy Technologies
A1 Muñoz Gil, Daniel
A1 Castillo Blas, Celia
A1 Feler, Dawid Krystian
A1 Gómez Recio, Isabel
A1 Tinoco, Miguel
A1 Querejeta Fernández, Ana
A1 González Prieto, Rodrigo
A1 Gándara, Felipe
A1 Silva Jr, Romualdo Santos
A1 Ferrer, Pilar
A1 Prieto, Carlos
A1 Lajaunie, Luc Cyrille Jacques
A1 Martínez Peña, José Luís
A1 Ruíz González, María Luisa
A1 González Calbet, José María
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 2D transition metal oxides
K1 double layers hydroxides
K1 magnetocaloric effect
K1 oxygen evolution reaction (OER)
K1 pair distribution function (PDF)
AB Layered double hydroxides (LDH) based on transition metals are highly flexible in tailoring their dimensionality, lattice, and electronic structures, making them promising candidates as multifunctional 2D materials for the development of clean energy technologies and boosting the use of hydrogen as an energy vector. In this paper, strategic anion substitution in cobalt LDH is an appealing strategy to produce a material with two-fold functionality, electrochemical and magnetocaloric response, offering a sustainable alternative to existing electrocatalysts and cryogenic refrigerants. It is unambiguously demonstrated that (poly)oxomolybdate-based specimens interleave in Co LDH nanosheets up to a Co:Mo = 1:0.4 ratio, leading to an interstratified material. This intercalation greatly benefits the kinetics of the oxygen evolution reaction for H2 production, boosting the catalytic sites due to the expansion of the interlayer space, induced by the bulky molybdates which also partially modify the Co oxidation state of αCo(OH)2 nanolayers, favoring charge transfer. In parallel, the interleaved Mo species strengthen superexchange interactions compared with pristine α-Co(OH)2, effectively adjusting the operating temperature toward the liquid hydrogen range (2030 K). This specific temperature range allows to fill a critical gap in magnetocaloric materials, as few systems can simultaneously achieve both large magnetic entropy changes and structural stability. © 2025 The Author(s). Advanced Materials published by Wiley-VCH GmbH.
PB Wiley-Blackwell
SN 1521-4095
YR 2025
FD 2025
LK http://hdl.handle.net/10498/39330
UL http://hdl.handle.net/10498/39330
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026