On January 26, 2023, Nature Energy reported the application of CNT yarns in mechanical energy collectors. The device uses stretching to make the capacitance of the capacitor change, causing a current in the circuit, which converts mechanical energy into electrical energy. The researchers prepared the twisted yarn of CNT by modifying the twisting mode of conical rotation to twisting mode. This mechanical energy collector based on CNT yarns has improved its energy conversion efficiency from 7.6% to 17.4% (stretching) and 22.4% (twisting). For mechanical energy harvesting between 2 and 120 Hz, this twisted pair wire has higher gravitational peak power and average power than non-twisted pair mechanical energy harvesters that have been reported.
On February 9, 2023, Advanced Energy Materials reported that researchers have used a self-assembly strategy of covalent organic scaffold membranes to give the membranes (HB/CNT@COF) multiple functions (sodium ion transport, confinement, and polysulfide conversion) to maintain the stability of RT/Na-S battery systems. Due to the synergistic action of hydroxynaphthol blue (HB) and multi-walled carbon nanotubes (CNT), the HB/CNT@COF battery has a capacity of 733.4mAh g-1 with limited capacity attenuation after 400 cycles at 4 C, which is almost 4 times that of commercial glass fiber membranes.
In addition to the above reports, Applied Catalysis B: Environmental reported the application of carbon nanotubes in oxygen catalysis, oxygen reduction catalysis in zinc-air batteries, and efficient electrochemical CO2 conversion in a number of consecutive articles in February, and carbon nanotubes have mushroomed in various top journals, which shows their position in the field of nanomaterials.
How did the carbon nanotubes in the top issue of 2023 perform