Introduction to the structure and characteristics of Ni-MH battery

Positive electrode: active material (Ni(OH)2), conductive agent, solvent, binder, matrix. Negative electrode: active material (hydrogen storage alloy powder), binder, solvent, conductive agent, base diaphragm: PP+PE electrolyte: KOH+LiOH shell: steel shell, cap, tab Ni-MH battery advantages: 1. Energy density It is 1.5 times higher than that of nickel-cadmium battery; 2. The battery voltage is 1.2v-1.3v, which is equivalent to nickel-cadmium battery; 3. No memory effect, long cycle life; 4. Large current discharge, withstand overcharge and overcharge Strong discharge capacity; 5. No pollution, green battery. Disadvantages of nickel-metal hydride batteries: 1. The price is higher than that of nickel-cadmium batteries, and the negative electrode material is a rare earth alloy material; 2. The self-discharge speed is high. Ni-MH battery characteristics ①Voltageu003d1.2V②Energy/weightu003d60-120Wh/kg (watt hours/kg) ③Energy/volumeu003d140-300Wh/L (watt hours/liter) that is 504-1188kJ/kg (kilojoules/ Kg) ④Power/weightu003d250-1000W/kg ⑤Self-discharge rateu003dgenerally 2-30% per month, depending on temperature, low self-discharge model is 10-30% per year ⑥Charge and discharge efficiencyu003d66% Statement: This Some pictures and content of articles published on the site are from the Internet. If there is any infringement, please contact to delete the previous article: In what industry are lithium-ion batteries generally used?