N and S co-doped 3D hierarchical porous carbon as high-performance electrode material for supercapacitors

Recent Progress and Future Directions of Biomass-Derived Hierarchical Porous Carbon: Designing, Preparation, and Supercapacitor Applications

“…To date, major global energy consumption remains dependent on fossil fuels, such as coal, petroleum, and natural gas, which occupies around 29%, 31%, and 22%, respectively. However, the growing demand for energy consumption has accelerated global warming, environmental damage, the energy shortage, and other issues due to rapid economic social development and excessive use of fossil fuels. − Therefore, it is imperative to develop cost-effective and environmentally friendly solutions to release and address these challenges. In this respect, storage, conversion, and utilization of the renewable, dispersive, and nonperennial energy from sun, wind, geothermal, tidal, or biomass should be an effective option. − To ensure the steady output of these renewable and sustainable energy sources, the development and enhancement of high-performance energy storage technologies have attracted the attention of the scientific community and environmental protection agencies in various countries. , As advanced new energy storage devices, supercapacitors, that have emerged in recent years, present high-power density (more than 10 times that of secondary batteries), a wide temperature range, long cycle life, fast charging and discharging, and no pollution to the environment. − Which makes them widely used in the fields of backup power supplyies for microcomputer memory and auxiliary power supplies for electric vehicle starting and hill climbing, motor regulator, and sensors. , It is well known that the development of high performance and cost-effective materials is key to fundamental progress in the field of energy storage and conversion. , Ideally, these materials should be industrially and economically attractive and are produced from renewable and naturally abundant resources.…”

Mn Cluster-Embedded N/F Co-Doped Carbon toward Mild Aqueous Supercapacitors

“…Shi et al explored natural leaves as the carbon source, combined with Mg(NO 3 ) 2 and ZnCl 2 as activators. The obtained heteroatom-doped porous carbon materials exhibited a specific capacitance of 455.3 F g −1 at 1 A g −1 [ 16 ]. Although heteroatom-doped carbon materials exhibit excellent electrochemical performance, challenges still persist in the following aspects: firstly, there is still an absence of studies in the literature investigating the fundamental mechanism of doping metal ions on the electrochemical performance improvement of carbon materials [ 17 , 18 , 19 , 20 ]; secondly, carbon-based electrodes realize the discharging/charging process within acidic or alkaline electrolytes, which aggravate equipment corrosiveness and pose a risk to environmental safety.…”

Tuning the metal valence state of Pd nanoparticles via codoping of B–N for chlorophenol hydrodechlorination

“…doped HOPC because the doping agents can not only change the electronic and physicochemical properties of the support due to the electronegativity introduced in the HOPC structure by the doped atoms but also play a role in coordination or basic sites for activating a certain special substrate. [34][35][36] In particular, owing to their similar atomic radius with C atoms and strong valence bonds, N and B atoms are readily introduced into the carbon skeleton with the minimum structural distortions and thus the geometry of the carbon network is maintained. Compared with C (2.55), the lower electronegativity of B (2.04) causes p-type doping while the higher electronegativity of N (3.04) results in n-type doping because of the redistribution of the atomic charge density.…”