Ice accumulation on transmission lines often leads to great damage to power systems.Super-hydrophobic surfaces are proposed to inhibit ice accumulation on electrical power equipment.A novel anti-icing method was prese...Ice accumulation on transmission lines often leads to great damage to power systems.Super-hydrophobic surfaces are proposed to inhibit ice accumulation on electrical power equipment.A novel anti-icing method was presented for conductors with super-hydrophobic sleeves.The super-hydrophobic sleeves were prepared by applying polydimethylsiloxane(PDMS) and nano-silica hybrid coating on the outer surface of polyethylen terephthalate(PET) sleeves.Hydrophobicity and ice adhesion strength of the super-hydrophobic surface were investigated.Ice accumulation experiments were carried out on ordinary conductors,super-hydrophobic coated conductors,PET sleeve-covered conductors,and super-hydrophobic PET sleeve-covered conductors.Ice accumulation morphology,accumulated ice weight,and the icicle length of these four types of conductors were studied and analyzed.At the end of the 3 h ice accumulation experiment,the ice weight and icicle length on the conductor with super-hydrophobic PET sleeve was only approximately one tenth and one seventh of that on the untreated conductor respectively.Furthermore,the water contact angles of super-hydrophobic coated aluminum surface and super-hydrophobic coated PET sleeve were about 163o in average.The results indicate that the super-hydrophobic coating is effective in inhibiting ice accumulation on conductors.However,the use of a super-hydrophobic PET sleeve is a significantly more effective method,comparing with the application of a super-hydrophobic coating directly on the conductor.展开更多
相对于传统商用锂离子电池,使用不易燃无机固体电解质的全固态锂电池可在实现高电压和大容量的同时确保电池的安全性。为实现全固态锂电池在室温条件下的稳定循环,开发具有良好电极相容性的超离子导体作为无机固体电解质材料显得至关重...相对于传统商用锂离子电池,使用不易燃无机固体电解质的全固态锂电池可在实现高电压和大容量的同时确保电池的安全性。为实现全固态锂电池在室温条件下的稳定循环,开发具有良好电极相容性的超离子导体作为无机固体电解质材料显得至关重要。2018年,采用Li_(3)YCl_(6)快离子导体作为电解质的In Li/Li Co O_(2)全固态锂电池在无需任何额外界面修饰情况下即可实现室温下的稳定循环,这使得氯化物基固体电解质材料重新引起关注,并在近几年得到飞速发展。本文首先强调了良好的正极相容性是氯化物基超离子导体最具吸引力的优势,同时指出传统氯化物基电解质在负极侧的界面不稳定性来源于易被还原的中心金属元素,并提出了通过非密堆积型阴离子亚晶格实现氯化物基超离子导体更快、更低势垒的离子传导设计思路。最后,总结了近几年氯化物基固体电解质材料的研究进展,并讨论了在其大规模应用之前仍需解决的问题。展开更多
基金Project supported by National Natural Science Foundation of China（51107152）, Ftmd for Innovation Research Groups（51021005）, Key Science and Technology Project of Chongqing Eleelric Power Company （2012 Yu Electricity Science and Technoloyg 18）.
文摘Ice accumulation on transmission lines often leads to great damage to power systems.Super-hydrophobic surfaces are proposed to inhibit ice accumulation on electrical power equipment.A novel anti-icing method was presented for conductors with super-hydrophobic sleeves.The super-hydrophobic sleeves were prepared by applying polydimethylsiloxane(PDMS) and nano-silica hybrid coating on the outer surface of polyethylen terephthalate(PET) sleeves.Hydrophobicity and ice adhesion strength of the super-hydrophobic surface were investigated.Ice accumulation experiments were carried out on ordinary conductors,super-hydrophobic coated conductors,PET sleeve-covered conductors,and super-hydrophobic PET sleeve-covered conductors.Ice accumulation morphology,accumulated ice weight,and the icicle length of these four types of conductors were studied and analyzed.At the end of the 3 h ice accumulation experiment,the ice weight and icicle length on the conductor with super-hydrophobic PET sleeve was only approximately one tenth and one seventh of that on the untreated conductor respectively.Furthermore,the water contact angles of super-hydrophobic coated aluminum surface and super-hydrophobic coated PET sleeve were about 163o in average.The results indicate that the super-hydrophobic coating is effective in inhibiting ice accumulation on conductors.However,the use of a super-hydrophobic PET sleeve is a significantly more effective method,comparing with the application of a super-hydrophobic coating directly on the conductor.
文摘相对于传统商用锂离子电池,使用不易燃无机固体电解质的全固态锂电池可在实现高电压和大容量的同时确保电池的安全性。为实现全固态锂电池在室温条件下的稳定循环,开发具有良好电极相容性的超离子导体作为无机固体电解质材料显得至关重要。2018年,采用Li_(3)YCl_(6)快离子导体作为电解质的In Li/Li Co O_(2)全固态锂电池在无需任何额外界面修饰情况下即可实现室温下的稳定循环,这使得氯化物基固体电解质材料重新引起关注,并在近几年得到飞速发展。本文首先强调了良好的正极相容性是氯化物基超离子导体最具吸引力的优势,同时指出传统氯化物基电解质在负极侧的界面不稳定性来源于易被还原的中心金属元素,并提出了通过非密堆积型阴离子亚晶格实现氯化物基超离子导体更快、更低势垒的离子传导设计思路。最后,总结了近几年氯化物基固体电解质材料的研究进展,并讨论了在其大规模应用之前仍需解决的问题。
