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Fig. 4 | Nanoscale Research Letters

Fig. 4

From: Co/CoP Nanoparticles Encapsulated Within N, P-Doped Carbon Nanotubes on Nanoporous Metal-Organic Framework Nanosheets for Oxygen Reduction and Oxygen Evolution Reactions

Fig. 4

a Linear sweep voltammetry curves of the NPMCNT, NPMCNT-50, NPMCNT-100, NPMCNT-200, NPMCNT-300, NPMCNT-400, and 20% Pt/C electrocatalysts. b The rotating disk electrode voltammograms of NPMCNT-300 electrocatalyst with different rotation speeds. c The Koutecky-Levich plots (j is the measured current density, ω is the angular velocity of the disk (ω = 2πN, N is the linear rotation speed), d The rotating ring-disk electrode voltammograms, e the estimated value of electron transfer (n) and peroxide yields, and f the durability measurement of the NPMCNT-300 and Pt/C electrocatalysts

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