Dual synergistic effects between Co and Mo2C in Co/Mo2C heterostructure for electrocatalytic overall water splitting

Self-Supported Bimetallic Phosphide Heterojunction-Integrated Electrode Promoting High-Performance Alkaline Anion-Exchange Membrane Water Electrolysis

“…Thus, a fairly high current density of 1000 mA cm –2 was reached at an ultralow voltage of 1.678 V, which is far better than that of the Pt/C/NF||IrO 2 /NF couple (Figure b). The above results confirm that the Co 2 P–Ni 12 P 5 /NF||Fe 2 P–Ni 12 P 5 /NF couple can be used as the most competitive substitute for commercial catalysts as its activity has surpassed those of most catalysts in the literature and even noble-metal-based catalysts (Figure c). − Besides, the stability of the two-electrode system at high current densities was tested. Typically, the chronoamperometric mode (Figure d) and the chronopotentiometric mode (Figure S21) were tested under a high current density of 500 mA cm –2 for a total of 120 h. There is no obvious decline in the performance of the Co 2 P–Ni 12 P 5 /NF||Fe 2 P–Ni 12 P 5 /NF couple under high current densities in 1 M KOH solution at 25 °C, proving the long-term durability of our catalysts.…”

Rapidly reconstructing the active surface of cobalt-based perovskites for alkaline seawater splitting

“…1 Theoretically, water splitting can be achieved with a standard voltage of 1.23 V, whereas the actual voltage of water splitting is much higher than this theoretical value as a result of the presence of a large overpotential at both electrodes. 2,3 The water splitting reaction is a combination of the hydrogen evolution reaction (HER) at the cathode and the oxygen evolution reaction (OER) at the anode. Comparing with the HER, the OER is a complex 4-electron reaction with a much more sluggish kinetics.…”

Plant polyphenol-involved coordination assembly-derived Mo3Co3C/Mo2C/Co@NC with phase regulation and interface engineering for efficient hydrogen evolution reaction electrocatalysis

“…For instance, heterostructured materials formed from Mo 2 C and Co show boosted HER activity. 38 Notwithstanding these achievements, the interface and phase regulation in TMC-based multicomponent materials are very formidable challenges, especially in terms of developing a simple method. In addition, N-doped carbon can improve the dispersion of metal particles and enhance the catalyst stability and catalytic activity.…”

“…Therefore, the synergy between the catalyst and N-doped carbon to enhance charge transport can be used to design better catalysts. [38][39][40] The derivation of organic-inorganic hybrids is an effective tactic to prepare desirable TMCs embedded in a carbon matrix with tunable components and nanostructures. Lou and coworkers reported the synthesis of ultrafine MoC-Mo 2 C confined in porous nitrogen-doped carbon by controlling the amount of MoO 4 units within the typical zeolitic imidazolate framework, 41 and the strong coupling interactions between MoC and Mo 2 C led to an activity enhancement over the single-phase counterparts.…”

“…Therefore, the synergy between the catalyst and N-doped carbon to enhance charge transport can be used to design better catalysts. 38–40…”