Figure 1 (IMAGE)

Advanced Institute for Materials Research (AIMR), Tohoku University

Figure 1

Caption

Spin-state regulation at Fe2O3/Sm2O3 interface to promote OH* desorption in ORR: (a) schematic of OH* molecular orbital configuration and its associated magnetic moment; (b) antiferromagnetic alignment induced by super-exchange coupling of [Fe-O-Sm] unit; (c) parallel spin alignment induces OH* trapping at the contact surface via spin-interaction, inhibiting electron transfer, and resulting in sluggish desorption; and (d) antiferromagnetic alignment at the Fe2O3/Sm2O3 heterointerface reduces spin-interaction, enhancing electron accessibility, and facilitating OH* reduction. 

Credit

©Hao Li et al.

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