Fe3O4/N-CNTs derived from hypercrosslinked carbon nanotube as efficient catalyst for ORR in both acid and alkaline electrolytes

Structural and compositional analysis of MOF-derived carbon nanomaterials for the oxygen reduction reaction

“…Transition metal oxides exhibit excellent performance in the ORR catalysis, especially Fe 3 O 4 and Co 3 O 4 . 168,169 Wen et al used a 2D Co-MOF as a precursor to prepare a core–shell structure of N-doped carbon-encapsulated Co 3 O 4 nanoparticles as a catalyst (Co 3 O 4 @N/C). 170 This core–shell structure has demonstrated exceptional electrochemical performance, with E 1/2 and j comparable to those of commercial Pt/C catalysts, and a Tafel slope close to that of commercial Pt/C catalysts.…”

Enhancing supercapacitor performance using nanosheet-covered nanotube structures Co3S4/Ni0.96S@CNTs with carbon nanotubes as conductive substrates

“…When the current density was increased to 10 A g −1 , the power density reached 8000 W kg −1 and the energy density was still maintained at 25.8 W h kg −1 . The energy density and power density of the 2-CSNS@CNT//AC device produced by this method were similar to or higher than some recent reports, such as Co 3 S 4 /CNTs/C//AC (41.3 W h kg −1 at 691.9 W kg −1 ), 35 CuCo 2 S 4 /CNTs//CNTs (37.32 W h kg −1 at 800.7 W kg −1 ), 36 3DG/CNTs/MnO 2 //AC (33.71 W h kg −1 at 22 727.3 W kg −1 ), 37 Ti 3 C 2 /CNTs/MnCo 2 S 4 //Ti 3 C 2 /CNTs/ MnCo 2 S 4 (49.5 W h kg −1 at 350 W kg −1 ), 38 Fe 3 O 4 /N-CNTs//AC (25.9 W h kg −1 at 699 W kg −1 ) 39 and NiCo 2 O 4 /CNTs//AC (32.5 W h kg −1 at 800 W kg −1 ). 40 This method provides an effective idea for the preparation of high power and high energy density ASCs.…”

2D Monolayer Catalysts: Towards Efficient Water Splitting and Green Hydrogen Production

“…[28] Upon using rich resources available abundantly on the earth, such as water and sunlight, research and development are advancing for the production of hydrogen through electrocatalytic (EC), [11,[29][30][31][32] photocatalytic (PC) [33][34][35][36][37][38] and photoelectrochemical (PEC) water splitting. [21,[39][40][41][42][43][44][45] An alternative to noble metals, metal oxide-based semiconductors are widely used as catalysts for hydrogen evolution via water splitting. [46,47] However, there are issues such as partial reaction, either reduction or oxidation, charge and recombination taking place before reaction with water splitting, arise the challenges.…”

“…[48] To solve these problems, more effective catalysts must be investigated, and experiments with mixtures of two or more materials, one acting as a catalyst and the other as a co-catalyst, are also recommended. [40][41][42][43]49] A class of nanoscale materials known as 2D layered nanomaterials, often referred to as 2D nanomaterials or 2D materials, exhibits exceptional features due to their distinct atomic or molecular structure. 2D materials comprise one or more layers of atoms or molecules arranged in a two-dimensional plane, as compared to bulk materials, which feature three-dimensional groupings of atoms or molecules.…”