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Interface Energy Controlled Thermodynamics of Nanoscale Metal Hydrides
Author(s) -
Mooij Lennard P.A.,
Baldi Andrea,
Boelsma Christiaan,
Shen Kun,
Wagemaker Marnix,
Pivak Yevheniy,
Schreuders Herman,
Griessen Ronald,
Dam Bernard
Publication year - 2011
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201100316
Subject(s) - materials science , nanoscopic scale , thermodynamics , interface (matter) , metal , hydrogen , energy (signal processing) , chemical physics , nanotechnology , metallurgy , composite material , chemistry , organic chemistry , physics , statistics , mathematics , capillary number , capillary action
Nanoconfined MgH 2 is destabilized compared to its bulk counterpart because of an interface energy effect. The hydrogen equilibrium pressure increases by an order of magnitude when decreasing the Mg layer thickness from 10 to 2 nm. This relates to an interface energy change of 0.3 J m −2 .