Bismuth metal organic framework material, preparation method and lead storage battery anode additives thereof
A technology of organic framework and bismuth metal, which is applied in the preparation, application of positive electrode additives for lead storage batteries, in the field of bismuth metal organic framework materials, can solve the problems of low utilization rate of active materials and low energy density, and improve the utilization rate of positive active materials , large pore volume, and improved utilization
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[0025] 1. Preparation of bismuth metal organic framework materials
[0026] The effects of feed ratio, solvent selection and reaction temperature on the product and yield were systematically studied.
Embodiment 1
[0028] Weigh 2 mmol Bi(NO 3 ) 3 , 2 mmol 1,3,5-benzenetricarboxylic acid, 1 mmol 1,4-benzenedicarboxylic acid, and mix well, place in a 200 ml polytetrafluoroethylene-lined stainless steel reactor, add 100 ml methanol. Heat up to 150 o C for 24 h. The yellow precipitate was vacuum filtered, washed with dimethylformamide, methanol and deionized water in sequence, and finally dried in air to obtain a bismuth metal organic framework material. After inspection, the obtained bismuth metal organic framework material is a porous material. The metal organic framework material has good water solubility and acid stability, and can be dispersed in deionized water in advance.
Embodiment 2
[0030] Weigh 3 mmol Bi(NO 3 ) 3 , 1.5 mmol 1,3,5-benzenetricarboxylic acid, 1.5 mmol 1,4-benzenedicarboxylic acid, 1.5 mmol 3,5-pyridinedicarboxylic acid and mix well, place in 200 ml polytetrafluoroethylene-lined stainless steel reaction kettle , add 80 ml methanol and 20 ml dimethylformamide. Heat to 120 o C for 24 h. The yellow precipitate was vacuum filtered, washed with dimethylformamide, methanol and deionized water in sequence, and finally dried in air to obtain a bismuth metal organic framework material. After inspection, the obtained bismuth metal organic framework material is a porous material. The metal organic framework material has good water solubility and acid stability, and can be dispersed in deionized water in advance.
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