Recent advances in MXene-based nanoarchitectures as electrode materials for future energy generation and conversion applications

Investigation and Optimization of Mxene Functionalized Mesoporous Titania Films as Efficient Photoelectrodes

“…To date, numerous Mxenes composed of various transition elements have been studied, including Ti 2 CT x ,V 2 CT x , and Mo 2 CT x , where T signifies surface functional groups (−O, −OH, −F) [ 27 , 28 ]. The distinct structural phase and attached surface functionalities induce unusual characteristics in Mxene scaffolds, such as metallic conductivity, surface plasmon effects, hydrophilicity, greater surface area, and the ability to anchor a broad range of intercalates [ 29 , 30 , 31 ]. At present, most Mxenes are synthesized by etching Ti 3 AlC 2 in HF acid due to the low reduction potential of Al [ 32 ].…”

MoS2 quantum dot-decorated MXene nanosheets as efficient hydrogen evolution electrocatalysts

“…22 However, it should be noted that carbonaceous supports commonly exhibit very limited HER activity due to their high graphitization degree, which makes it difficult for them to directly engage in the electrocatalytic reaction. 23,24 In this aspect, MXenes, two-dimensional (2D) atomically thick transition-metal carbides/nitrides, have recently become a hot research topic due to their large specific surface areas, metallic conductivity, good electrochemical stability, and rich surface chemistry. 25,26 Among various MXene materials, 2D Ti 3 C 2 T x nanosheets have shown distinctive structural superiorities for the HER because there are a large number of hydrogen binding sites on their surface, which can effectively promote the water dissociation reaction and thereby boost the hydrogen production efficiency.…”

Rhodium Nanoflowers on Three-Dimensional Graphitic Carbon Nitride Nanosheets/Graphene Hybrid Aerogels as Electrocatalysts for Methanol Oxidation

“…Nowadays, the gradual depletion of fossil fuels and severe environmental contamination problems promote great progress in developing clean energy sources and power transformation facilities. − Direct methanol fuel cells (DMFCs) have been considered as one of efficient energy generation devices in virtue of low pollutant emission, high power density, convenient refueling, wide working-temperature scope, and simple instrument packaging. , Notably, anode catalysts can effectively accelerate the kinetic rate of methanol electro-oxidation and therefore play essential roles in the determination of the DMFCs’ output power . As of now, platinum (Pt) and its derivative materials are commonly applied electrocatalysts, while their large-scale utilization is hindered because of their low abundance, high price, and susceptibility to anode poisoning, which turns down the hope of the successful commercialization of DMFCs. − Within this context, the exploitation of Pt-alternative species with excellent catalytic performance and affordable cost is of vital strategic importance for wide applications. − Previous reports have demonstrated that some non-Pt transition metal materials with d-band structures show methanol oxidation activity under certain circumstances. − Nonetheless, the current catalytic ability and use efficiency of Pt-free catalysts need further improvement on the road to their practical use.…”