A hierarchical Co₃O₄/CoS microbox heterostructure as a highly efficient bifunctional electrocatalyst for rechargeable Zn–air batteries

Abstract

Herein, we report the synthesis of a strongly coupled Co3O4/CoS microbox heterostructure, prepared through an anealing treatment with subsequent hydrothermal sulfidation of a Co–Co Prussian blue analog (PBA) precursor. The...

First-principles design of hetero CoM (M = 3d, 4d, 5d block metals) double-atom catalysts for oxygen evolution reaction under alkaline conditions

“…This was higher by 0.91 V than a previously reported Co oxide catalyst. 19 Next, to further enhance the OER activity of a homo Co 2 /N 4 G catalyst, we replaced one Co atom in the Co 2 double-atom by 3d block metals (M = Sc, Ti, V, Cr, Mn, Fe, Ni, Cu, and Zn).…”

“…This was higher by 0.91 V than a previously reported Co oxide catalyst. 19 Next, to further enhance the OER activity of a homo Co 2 /N 4 G catalyst, we replaced one Co atom in the Co 2 double-atom by 3d block metals (M ¼ Sc, Ti, V, Cr, Mn, Fe, Ni, Cu, and Zn). In addition to the N 4 G support material, we investigated the OER activity when the N 4 G support (which had a di-vacancy of two carbon atoms surrounded by four nitrogen atoms) (Fig.…”

“…For this reason, many researchers have made efforts to enhance the catalytic activity through the particle size and morphology control of the catalysts or using a variety of support materials and dopants. [13][14][15][16][17][18][19][20] shown remarkable catalytic performance in the hydrolytic dehydrogenation of ammonia borane, CO oxidation, and formic acid dehydrogenation, respectively. [42][43][44] Nevertheless, the study of DACs for the OER has not been much reported to date.…”

“…For this reason, many researchers have made efforts to enhance the catalytic activity through the particle size and morphology control of the catalysts or using a variety of support materials and dopants. 13–20…”

Harnessing the Defects at Hetero‐Interface of Transition Metal Compounds for Advanced Charge Storage: A Review

“…Chemical bonding is a much stronger interaction than the vdW force; thus, chemical bonding has a stronger effect than the vdW force on relieving volume expansion. [ 142–144 ] Some studies have investigated how chemical bonding at the hetero‐interface affects the electrochemical performance. Long cycle life is a key factor in electrochemical performance.…”