Hybrid Particle Size Template Method for Controllable Synthesis of Nitrogen-Doped Multilevel Porous Carbon as High-Rate Zn-Ion Hybrid Supercapacitor Cathode Materials.

Achieving high rate performance without compromising energy density has always been a critical objective for zinc-ion hybrid supercapacitors (ZHSCs). The pore structure and surface properties of carbon cathode materials play a crucial role. We propose utilizing a hybrid particle size (20 and 40 nm) magnesium oxide templates to regulate the pore structure of nitrogen-doped porous carbon derived from the soybean isolate.

CoB and Co Nanoparticles Immobilized on the N-B-Doped Carbon Derived from Nano-BC for Efficient Catalysis of Oxygen Evolution, Hydrogen Evolution, and Oxygen Reduction Reactions.

A novel hybrid electrocatalyst of CoB and Co nanoparticles immobilized on N-B-doped carbon derived from nano-BC (CoB/Co/N-B-C/BC) is in situ synthesized by pyrolysis of nano-BC supporting Co(OH) nanoparticles with melamine. The CoB and Co nanoparticles are formed and anchored on the generated N and B codoped carbon and undecomposed BC. The hybrid exhibits remarkable catalytic performances toward the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR)-a very small potential of 1.

Tungsten-coated nano-boron carbide as a non-noble metal bifunctional electrocatalyst for oxygen evolution and hydrogen evolution reactions in alkaline media.

Herein, tungsten-coated nano-boron carbide (W-WB-WC/BC) particles were prepared by heating a mixture of BC and W powder using a spark plasma coating (SPC) method. During the discharge treatment process, metal W in the mixture is activated and reacts with BC to form WC, WB, and graphite nanoribbons. The oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance of W-WB-WC/BC is tested in an alkaline solution, and the results show that the W-WB-WC/BC composite electrocatalyst exhibits a low overpotential of 0.