1.2V Ni-MH battery.The research status of low-temperature lithium batteries mainly includes the following aspects

　　1. Research on lithium battery materials. The electrode material of low-temperature lithium batteries has a crucial impact on their performance. At present, researchers mainly focus on improving the characteristics of electrode materials to reduce internal resistance at low temperatures and increase lithium ion exchange rate. For example, using conductive polymers to improve the conductivity of electrode materials, enhance their battery capacity and cycle life.

　　2. Research on electrolytes. At low temperatures, the migration rate of ions in the electrolyte will significantly decrease, leading to a decrease in battery performance. Therefore, researchers need to find an electrolyte that can maintain the good conductivity of lithium ions and maintain the normal working state of the battery at low temperatures. In recent years, researchers have reduced the migration ability of lithium ions and internal resistance of batteries by adding different types of additives, such as glucose and magnesium sulfate, and improved the performance of batteries.

　　3. Testing of low-temperature performance. The research on low-temperature lithium batteries also requires the development of a battery testing equipment suitable for use in low-temperature environments. At present, researchers use equipment such as low-temperature chambers to test the performance of low-temperature lithium batteries to evaluate their performance in low-temperature environments.

　　2. In the field of electric vehicles. Low temperature lithium batteries have advantages such as high energy density, flexibility, and stability, and are widely used in the field of electric vehicles. For example, Tesla's Model S uses low-temperature lithium batteries to maintain high efficiency even at low temperatures.

　　3. In the field of surgical procedures. The application of low-temperature lithium batteries in surgical procedures has also received much attention. For example, low-temperature lithium batteries can be used in implantable pacemakers, ventilators, and other life support devices to ensure good performance in low-temperature environments.

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