Urea-boosted gas-exfoliation synthesis of lignin-derived porous carbon for zinc ion hybrid supercapacitors

Regulating the Porous Structure of Lignin-Derived Carbon Materials for High Adsorption Performance via Dual Nitrogen Source-Assisted Activation

“…This gas exfoliation phenomenon facilitates the development of a hierarchical pore structure and inhibits the aggregation of lignin macromolecules during pyrolysis. No substantial weight loss peak was observed for the ALUNC-0.5 precursor at higher temperatures, suggesting that K 2 CO 3 reacts with urea at lower temperatures, attenuating the potency of potassium carbonate activation at elevated temperatures . The ALUNC-0.5 precursor exhibited a substantial release of gases even after reaching 800 °C, thereby facilitating the generation of additional micropores and the expansion of pre-existing micropores into mesopores.…”

“…The introduction of heteroatoms, particularly nitrogen, into the carbon material structure can significantly enhance their adsorption capacity. Typically, nitrogen-doped porous carbon materials attract pollutants through acid–base interactions at nitrogen-containing adsorption centers while capturing pollutant molecules through micropore physical adsorption mechanisms or surface weak binding forces. , …”

Biomass-Derived Carbon Materials for Advanced Metal-Ion Hybrid Supercapacitors: A Step Towards More Sustainable Energy

“…These materials have shown great potential in improving the electrochemical performance of ZIHSCs through several methods, such as maximizing surface area, porosity, and electrical conductivity [134][135][136][137][138][139][140][141]. Various studies have examined ZIHSCs using BDCs derived from hemp biomass [142], glutinous rice [143], platanus achene fruits [144], pyrolytic carbon black and critical PANI [145], metal organic frameworks (MOFs) [146,147], carp scales [148], green cokes [149], bamboo [150,151], rice husk [152], heavy fraction of bio-oil [153], yeast [154], by-product of traditional Chinese medicine [155], wood [156], lignin [157,158], corncob cellulose [159], heavy bio-oil [160], and sugarcane [161]. The wide variety of BDCs, each with their own unique structure and electrochemical properties, has played a significant role in the progress of ZIHSCs.…”

Urea Synthesis from N2 and CO2 over Dual-Atom Catalysts: A High-Throughput Computational Insight

“…9,10 The electrocatalysis of urea from N 2 and CO 2 has been attracting much attention. 11,12 For instance, Chen et al immobilized PdCu alloy nanoparticles on TiO 2 nanosheets for urea's electrosynthesis and revealed the electrosynthesis reaction pathway through theoretical in-sight. 13,14 Recently, Yuan et al 15 achieved a remarkable breakthrough in the production of urea, achieving a Faradaic efficiency of 12.55% using a Mott−Schottky heterostructure of Bi−BiVO 4 hybrid.…”

“…The conversion of N 2 and CO 2 into urea with added value through the C–N coupling reaction under mild conditions presents a favorable approach. This method not only promotes energy conservation but also facilitates the utilization of waste materials. , The electrocatalysis of urea from N 2 and CO 2 has been attracting much attention. , For instance, Chen et al immobilized PdCu alloy nanoparticles on TiO 2 nanosheets for urea’s electrosynthesis and revealed the electrosynthesis reaction pathway through theoretical insight. , Recently, Yuan et al achieved a remarkable breakthrough in the production of urea, achieving a Faradaic efficiency of 12.55% using a Mott–Schottky heterostructure of Bi–BiVO 4 hybrid. The electrocatalytic pathway of urea synthesis skips the generation of ammonia.…”