Fig. 1: Characterizations of the W-Ir-B alloy catalyst (atomic ratio, 60 : 20 : 20). | Nature Communications

Fig. 1: Characterizations of the W-Ir-B alloy catalyst (atomic ratio, 60 : 20 : 20).

From: IrW nanochannel support enabling ultrastable electrocatalytic oxygen evolution at 2 A cm−2 in acidic media

Fig. 1: Characterizations of the W-Ir-B alloy catalyst (atomic ratio, 60 : 20 : 20).

a XRD patterns of the rapidly solidified alloy rod with a diameter of 1 mm. b TEM image of the W-Ir-B alloy. c SAED patterns of the different regions marked in Fig. 1b. Region A: IrW phase (red solid box); Region B: W2B phase (blue solid box). d HAADF-STEM image and the corresponding EDS elemental mapping of the W-Ir-B alloy catalyst. e STEM-EDS line-scanning profile of the separated phases of the W-Ir-B alloy catalyst. The inset shows the selected area for EDS line-scanning analysis. f HRTEM image of the phase-separated W-Ir-B alloy. Scale bar: b 100 nm; c 5 nm−1; d 100 nm; f 5 nm.

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