Decompose the difference between lithium iron batteries and alkaline batteries

Alkaline batteries, also known as alkaline dry batteries, alkaline zinc-manganese batteries, and alkaline manganese batteries, are the best-performing varieties in the current commercial zinc-manganese dry battery series. The model of alkaline batteries is LR6 (No. 5)/LR03 (No. 7), and the prefix L stands for alkaline (aLkaline). Of course, there may be a suffix after the number, but it is not common. Alkaline batteries use electrolytic manganese dioxide to make a ring-shaped positive electrode, and a zinc paste with zinc powder and additives as the negative electrode. Due to the strong conductivity of the electrolyte, the surface area of u200bu200bthe positive and negative materials is much better than that of carbon batteries, and the use of the electrochemical reaction of the zinc-manganese system under strong alkaline conditions makes the output power and capacity of alkaline batteries far better than Carbon battery. The most familiar alkaline batteries should be Nanfu, Shuanglu, Duracell, 555, Maxell, GP, etc. Although the alkaline battery adopts a sealed battery structure, but the lye has a characteristic called wettability, which has a strong ability to adsorb metal surfaces. This causes the so-called climbing alkali phenomenon. This phenomenon is actually due to the concentration gradient caused by the evaporation of the water in the soda ash solution above the liquid surface, which is adsorbed on the metal surface, and the soda ash solution below is sucked up to evaporate. This happens from time to time in alkaline batteries, which is what we often call battery leakage. In addition, when the alkaline battery is over-discharged, hydrogen appears in the negative electrode, and the internal pressure of the battery rises. In order to prevent the battery from exploding, the pressure relief valve at the negative electrode will open, and of course the exhaust will also leak. Therefore, an important improvement goal of the battery has always been no leakage. Lithium iron battery Lithium iron dry battery, full name lithium-iron disulfide dry battery. Because this kind of battery uses a brand-new internal material and has a variety of characteristics, it is often called the third-generation dry battery in the industry. Compared with the alkaline batteries that existed in 1949, the reality of lithium iron batteries is very novel. The reversibility of the reaction of the positive iron disulfide during discharge is relatively narrow, so this special battery is not suitable for the development of a rechargeable battery, and the use of lithium metal that is not conducive to charging but higher capacity as the negative electrode can improve the usability capacity. This makes this battery very suitable for disposable batteries, and is the best alternative to carbon batteries and alkaline batteries. Due to the violent reaction between lithium and water, the electrolyte of lithium-iron batteries uses organic solvents containing lithium salts instead of aqueous solutions. For carbon batteries and alkaline batteries, this new type of lithium-iron battery The material eliminates the risk of leakage. The weight of a lithium-iron disulfide battery of the same size is only half that of an alkaline battery, and the total discharge energy is more than 25% higher than that of an alkaline battery. At the same time, compared with alkaline batteries, its leakage rate and self-discharge are lower, so low-power appliances also have certain advantages, but the biggest factor restricting its popularity is the high production cost and the high battery unit price. More than 100% of the alkaline battery. The difference between lithium-iron batteries and alkaline batteries: weight Li-iron batteries are lighter than alkaline batteries in terms of weight. Two: Voltage The initial voltage of lithium iron batteries is as high as 1.8V, which is much higher than 1.5V of alkaline batteries and 1.2V of nickel-metal hydride. Three: Discharging Traditional alkaline batteries have a relatively clear drop in voltage with the extension of use time; while the discharge of lithium iron batteries has a rising situation during use, followed by a relatively stable discharge, but the overall voltage is still To be a bit higher. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What matters should be paid attention to when assembling 18650