① Environmental protection: the lithium-ion battery of solar street lamp is pollution-free; Colloidal batteries are polluted by heavy metal lead.
② Different electrolytes: the electrolyte of lithium-ion battery is non-aqueous liquid organic electrolyte; The electrolyte of colloidal battery is gel electrolyte.
③ Long service life: at present, lithium iron phosphate is generally charged 1500 times, without memory effect. After 1500 times of charging, it accounts for about 85% of the storage capacity; The colloidal battery is about 500 times, and the memory effect is obvious.
④ Safety: there are different differences in the safety of power lithium-ion battery materials, that is, the colloidal battery technology has been quite mature, and its safety is higher than that of lithium-ion batteries.
⑤ High efficiency and good performance: colloidal battery has small self discharge, which is conducive to long-term storage; High deep discharge performance is conducive to improving the utilization rate of active substances and discharge capacity; The recovery ability of deep discharge and over discharge is strong, and the charging acceptance ability exceeds the national standard by more than 50%.
⑥ The working principle is different: when charging a lithium-ion battery, the lithium ions generated on the positive pole move to the negative pole through the electrolyte. The more lithium ions reach the negative pole, the higher the charging capacity; When discharging the battery, the lithium ion embedded in the negative electrode moves back to the positive electrode. The more lithium ions return to the positive electrode, the higher the discharge capacity. Colloidal batteries are sealed by using the principle of cathode absorption. The reduction of oxygen on the negative electrode and the increase of hydrogen overpotential of the negative electrode prevent a large number of hydrogen evolution reactions.
