Anode material of lead accumulator and preparation method thereof

Abstract

The invention discloses lead storage battery positive pole material and a production method thereof, ingredients of the material and percent contents of the ingredients by weight are as follows: 0.2-2% of carbon nanometer tube, 0.2-2% of polyacrylonitrile short fiber, 60-90% of PbO2, the rest is lead powder. The carbon nanometer tube experiencing mixed-acid ultrasonic treatment is used as an additive for the lead storage battery positive pole, which can not only resist corrosion from the execrable electrochemical environment in the lead storage battery, increase specific surface area of the positive pole active substances, promote charging and discharging abilities of an electrode, improve the circulation performance, boost chemical efficiency, but advance the utilization rate of the active substances and discharging capacity of the lead storage battery. In case of 0.5c-10c of current, the utilization rate of the active substances in simulation batteries can be enhanced by 8%-15%. The invention has simple process and low cost as well as adapt to large-scale production and application.

Description

technical field

[0001] The invention relates to a positive electrode material of a lead storage battery and a preparation method thereof. Background technique

[0002] At present, the domestic and foreign academic research circles of lead-acid batteries agree that the main problems of lead-acid batteries are: low utilization rate of active materials (30-35% for positive pole and 40-45% for negative pole), low specific energy of battery (generally 30-35wh / kg). In recent years, in order to reduce the resistance of the positive electrode and improve the utilization rate of the active material of the positive electrode, amorphous carbon and graphite have been used as additives. Although these additions showed good performance at the beginning of the battery cycle, due to the harsh application environment inside the lead-acid battery, they quickly lost their effect as the cycle progressed. At present, there are many studies on the positive additives of lead storage batteries: ...

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