Highly Efficient Proton Conduction in the Metal–Organic Framework Material MFM-300(Cr)·SO<sub>4</sub>(H<sub>3</sub>O)<sub>2</sub>
Jin Chen, Qingqing Mei, Yinlin Chen, Christopher Marsh, Bing An, Xue Han, Ian P. Silverwood, Ming Li, Yongqiang Cheng, Meng He, Xi Chen, Weiyao Li, Meredydd Kippax‐Jones, Danielle Crawshaw, Mark D. Frogley, Sarah J. Day, Victoria García Sakai, Pascal Manuel, Anibal J. Ramirez‐Cuesta, Sihai Yang⧫, Martin Schröder
Abstract
synchrotron X-ray powder diffraction (SXPD), neutron powder diffraction (NPD), quasielastic neutron scattering (QENS), and molecular dynamics (MD) simulation reveal the pathways of proton transport and the molecular mechanism of proton diffusion within the pores. Confined sulfuric acid species together with adsorbed water molecules play a critical role in promoting the proton transfer through this robust network to afford a material in which proton conductivity is almost temperature-independent.