Fig. 2: The initial solar-driven dehydrogenation performance of MgH2 catalyzed by CuNi alloy. | Nature Communications

Fig. 2: The initial solar-driven dehydrogenation performance of MgH2 catalyzed by CuNi alloy.

From: Atomic reconstruction for realizing stable solar-driven reversible hydrogen storage of magnesium hydride

Fig. 2

a The color, b UV–vis–NIR absorption spectra, c the response of temperature to light irradiation, d the corresponding solar-driven H2 desorption curves of MgH2, and e the heat-driven isothermal dehydrogenation curves at 250 °C of MgH2 under the catalysis of CuNi alloys, Ni, and Cu, respectively, including ball-milled MgH2 (BM MgH2) for comparison. f H2 desorption curves of MgH2 catalyzed by Cu1Ni1 under different light intensities. g Completeness ratio over time using solar energy and direct heating with normalized H2 release capacity of MgH2 under the catalysis of Cu1Ni1 at varying light intensities (or corresponding temperatures). The pentagrams represent H2 capacity. h H2 desorption curves of MgH2 catalyzed by Cu1Ni1 using solar energy (light intensity: 2.8 W cm−2, corresponding to a temperature of 250 °C) and electrical heating (250 °C), respectively. Source data are provided as a source data file.

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