The ever-increasing integration of electronic devices has inevit-ably caused electromagnetic interference and heat accumulation problems,and dual-function materials with both a high thermal conductivity and high elect...The ever-increasing integration of electronic devices has inevit-ably caused electromagnetic interference and heat accumulation problems,and dual-function materials with both a high thermal conductivity and high electromagnetic wave absorption(EWA)are regarded as an effective strategy for solving these problems.Carbon materials are widely used as thermal and EWA fillers due to their excellent conductivity and outstanding thermal conduction properties,and have become a research hotspot in the field of high thermal conductivity,microwave absorbing materials in recent years.The status of current research progress on carbon-based high thermal-conduction microwave absorption materials,including carbon fibers,carbon nanotubes,graphene and amorphous carbon,is re-viewed,and the influence of the structure of the materials on their absorption and thermal conductivity properties,such as core-shell structure,three-dimensional network structure,and heteroatom doping,is also elaborated.Feasible solutions for the cur-rent problems with these materials are proposed,with the aim of providing valuable guidance for the future design of carbon-based high thermal conduction microwave absorbing materials.展开更多
Petroleum asphalt,an important by-product of the petrochemical industry,has diverse applications but often suffers from low industrial added value.Because of its low cost,high carbon content,and high polycyclic aromat...Petroleum asphalt,an important by-product of the petrochemical industry,has diverse applications but often suffers from low industrial added value.Because of its low cost,high carbon content,and high polycyclic aromatic hydrocarbon content,appropriate modification can increase its value and expand its energy storage applications.Current research progress on the common preparation methods of petroleum asphalt-based carbon materials,including template-assisted pyrolysis,molten salt treatment,activation,heteroatom doping,and pre-oxidation is reviewed,and its use in supercapacitors and alkali metal ion batteries,is also elaborated.Feasible solutions for the current problems with petroleum asphalt are proposed,with the aim of providing insights into its high value-added utilization.展开更多
基金financial supports from the National Natural Science Foundation of China(22238012 and 22178384)Science Foundation of China University of Petroleum,Beijing(2462024QNXZ003)。
文摘The ever-increasing integration of electronic devices has inevit-ably caused electromagnetic interference and heat accumulation problems,and dual-function materials with both a high thermal conductivity and high electromagnetic wave absorption(EWA)are regarded as an effective strategy for solving these problems.Carbon materials are widely used as thermal and EWA fillers due to their excellent conductivity and outstanding thermal conduction properties,and have become a research hotspot in the field of high thermal conductivity,microwave absorbing materials in recent years.The status of current research progress on carbon-based high thermal-conduction microwave absorption materials,including carbon fibers,carbon nanotubes,graphene and amorphous carbon,is re-viewed,and the influence of the structure of the materials on their absorption and thermal conductivity properties,such as core-shell structure,three-dimensional network structure,and heteroatom doping,is also elaborated.Feasible solutions for the cur-rent problems with these materials are proposed,with the aim of providing valuable guidance for the future design of carbon-based high thermal conduction microwave absorbing materials.
文摘Petroleum asphalt,an important by-product of the petrochemical industry,has diverse applications but often suffers from low industrial added value.Because of its low cost,high carbon content,and high polycyclic aromatic hydrocarbon content,appropriate modification can increase its value and expand its energy storage applications.Current research progress on the common preparation methods of petroleum asphalt-based carbon materials,including template-assisted pyrolysis,molten salt treatment,activation,heteroatom doping,and pre-oxidation is reviewed,and its use in supercapacitors and alkali metal ion batteries,is also elaborated.Feasible solutions for the current problems with petroleum asphalt are proposed,with the aim of providing insights into its high value-added utilization.
