Research On Bio-based Porous Carbon And Cobalt Doped Materials Applied To Electrocatalyst

In the context of economic globalization,the energy shortage and environmental pollution caused by over-reliance on traditional fossil fuels have become increasingly serious,and have become a huge obstacle to the harmonious development of humans and nature.Metal-air batteries,fuel cells,and water splitting technologies have been recognized as clean and efficient energy conversion or storage devices that can replace fossil fuels.However,several electrochemical reactions（HER,OER,ORR）involving these technologies,because their slow chemical reaction kinetics and high reaction barriers severely limit the practical application of these technologies,so the development of efficient and stable electrocatalysts is the key to solving these problems.Using cheap and abundant biomass directly from nature as a precursor is a simple and excellent method to introduce scientific research into the direction of environmentally friendly development,and it is also an urgent requirement for the sustainable development of green chemical technology.A simple and scalable method for preparing metal-free biomass-derived nitrogen self-doped porous activated carbon（N-PAC）with large specific surface area(S_BET=1300.58m² g^-1)was introduced Basically,we successfully selected cobalt phthalocyanine to anchor metal cobalt atoms through coordination reaction to avoid its agglomeration,control the metal particle size,and enhance the catalytic activity of porous carbon materials.The prepared porous carbon material showed excellent HER catalytic activity(E_onset=45 m V),OER catalytic activity(E_onset=1.52 V),ORR catalytic activity(ΔE_1/2=0.85 V).In addition,it also shows high methanol tolerance,catalytic selectivity,long-term stability and chemical stability.These excellent performances indicate that this multifunctional electrocatalyst has great potential in energy conversion and storage.