Recently, Zhang Huamin and Li Pixian, research fellows of the Department of Energy Storage Technology of the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, used the “hole size screening effect†to immobilize bromine and designed and prepared a cage-like porous carbon material with both high activity and solid bromine function. Its application in zinc bromide flow batteries has been realized. The relevant research results were published in Advanced Materials (DOI:10.1002/adma.201605815). Due to the higher electrode potential and lower cost of Br2/Br-redox couples, bromine-based flow batteries have become one of the research hotspots. The low Br2/Br-reactivity and cross-blending of bromine are key challenges for bromine-based flow batteries. The research team designed a class of hollow, porous nano-cage materials with a pore size between the bromide ion and the complexed bromine; after the electrochemical reaction of the bromide ion inside the cage, using the "hole size screening effect" "Fixed" inside, thus effectively inhibiting cross-contamination of bromine. The single cell assembled with this material has a Coulomb efficiency of 98% and an energy efficiency of 81% under a charge and discharge condition of 80 mA/cm2. This work provides new ideas for the design and preparation of bromine-based flow battery electrode materials. The above research work was supported by the National Natural Science Foundation of China, the iChEM and the Dalian Chemical Industry Co., Ltd. cooperation project.
Sliver Tungsten Electrode
Sliver tungsten Electrode is alloy of tungsten and sliver ,also called sliver tungsten bar or sliver tungsten rod .
Sliver tungsten electrode physical properties .
Density :11.75-16.10g/cm ², it depend on the content of tungsten and sliver
Composition W30-80 5,Ag 20-70%
Silver tungsten electrode is feature with high arc corrosion ,high hardness ,nice electtial conductivity and high fusion welding resistance etc.
Application of sliver tungsten electrode
Sliver tungsten electrode commonly used as switches, it performs well in AC welding
Used in high temperature resistance industry
Applied for sport equipment
Silver tungsten electrode
Because of the mutal solubility of tungsten sliver is too low ,sliver tungsten electrode only can be manufactured by Powder Metallurgy and pressing method .
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