Enhanced alkaline bifunctional electrocatalytic water splitting achieved through N and S dual-doped carbon shell reinforced Co₉S₈microplates

Abstract

Developing efficient, durable, and noble-metal-free electrocatalysts are considered the Holy Grail of sustainable hydrogen production through water splitting. In light of the potential importance of carbon components in low-cost electrocatalysis,...

Dual-Mode Porous and Highly Graphitized 3D Nitrogen-Doped Carbon Network as an Advance Anode Material for Sodium-Ion Batteries

“…Along with D- and G-bands, a relatively weaker 2D-band also pops up in the Raman spectrum of 3D PNC in the region of 2300–3100 cm –1 , which further testifies to the improvement in local structural order . The 2D-band, also called the overtone of the D-band, results from a second-order two-phonon lattice vibration process and shows a strong frequency dependence on the excitation laser energy . The G- and 2D-bands are Raman signatures of graphitic sp 2 materials.…”

“…54 The 2D-band, also called the overtone of the D-band, results from a second-order two- phonon lattice vibration process and shows a strong frequency dependence on the excitation laser energy. 55 The G-and 2Dbands are Raman signatures of graphitic sp 2 materials. Table 1 summarizes the XRD and Raman analysis results of 3D PNC.…”

Charge Redistribution of Co9S8/MoS2 Heterojunction Microsphere Enhances Electrocatalytic Hydrogen Evolution

“…Co 9 S 8 was also explored as a HER electrocatalyst many years ago because of its excellent metal conductivity [ 18 ]. By controlling the morphology and compounding with a conductive substrate, the HER properties of Co 9 S 8 -based materials have been greatly improved and have attracted a lot of attention [ 19 , 20 , 21 ]. Although much progress has been made, the low intrinsic activity of a single sulfide is still a factor limiting its application.…”

Binary Co9S8–NiCo2S4 anchored on N-doped rGO backbone as an efficient bifunctional and durable hetero-catalyst for overall water-splitting in alkaline medium

“…24–26 The catalyst shielding is another structural advantage offered by the high surface area hosts such as heteroatom-doped reduced graphene oxide. 27–29 Thus, extensive research has been reported on TMS-rGO hybrids as high-performance water-splitting catalysts benefitting from the above rationales. 30–33…”

“…[24][25][26] The catalyst shielding is another structural advantage offered by the high surface area hosts such as heteroatom-doped reduced graphene oxide. [27][28][29] Thus, extensive research has been reported on TMS-rGO hybrids as high-performance water-splitting catalysts benefitting from the above rationales. [30][31][32][33] In this work, we have successfully achieved the integration of the ideal structural features by conceptualizing a ternary hetero-catalyst consisting of a binary sulphide-sulphide (Co 9 S 8 / NiCo 2 S 4 ) system anchored on N-doped rGO through a multistep synthesis protocol (Scheme 1) involving a solvothermal method followed by the thermal treatment.…”