Four major differences between primary batteries and secondary batteries

Four major differences between primary batteries and secondary batteries
From the structural point of view, secondary batteries undergo reversible changes between electrode volume and structure during discharge, while the interior of primary batteries is much simpler because it does not need to regulate these reversible changes.
primary battery
The mass-specific capacity and volume-specific capacity of the primary battery are larger than ordinary rechargeable batteries, but the internal resistance is much larger than that of the secondary battery, so the load capacity is lower.
primary battery
Primary batteries have much less self-discharge than secondary batteries. Primary batteries can only be discharged once, for example, alkaline batteries and carbon batteries fall into this category, and secondary batteries can be used repeatedly.
Secondary batteries are more environmentally friendly than primary batteries. The primary battery must be discarded after use, and the rechargeable battery can be used repeatedly. The next-generation rechargeable battery that meets the national standard can usually be used repeatedly for more than 1,000 times, which means that the waste generated by the rechargeable battery is less than 1/1000 of the primary battery. The advantages of secondary batteries are obvious no matter from the perspective of waste reduction or resource utilization and economy.
The internal resistance of the primary battery is much larger than that of the secondary battery, and its high-current discharge performance is not as good as that of the secondary battery.
Under the condition of small current and intermittent discharge, the mass specific capacity of the primary battery is greater than that of ordinary secondary and secondary batteries, but when the discharge current is greater than 800mAh, the capacity advantage of the primary battery will be significantly reduced.