Like humans, batteries perform best at room temperature. Did you know that lightly warming an empty battery from a smartphone or flashlight, for example by keeping it in the pocket of your jeans, can contribute to a longer lifespan? This is because a better electrochemical reaction occurs at more pleasant temperatures, around 27°C.
While high temperatures can temporarily improve performance, prolonged exposure to heat can significantly shorten battery life.
In colder conditions, as any motorist in a cold country can confirm, a warm battery starts a car’s engine better than a cold one. This is because cold increases internal resistance and reduces capacity. A battery that offers 100% capacity at 27°C performs at only 50% of its capacity at -18°C.
However, not every battery is the same. The temporary capacity reduction depends on the chemical composition of the battery.
The solid-state polymer battery, which delivers optimal performance at temperatures between 60-100°C (140-212°F), illustrates the complexity of temperature management. These batteries are used in hot climates where heat acts as a performance enhancer, supported by built-in heating elements. Despite their potential, high costs and safety risks limit their application.
In multi-cell packs, such as those in power tools and electric vehicles, cold can lead to cell reversal when weaker cells become overloaded and permanently damaged. This underscores the importance of appropriate technology choice and regular monitoring of battery cells to ensure sustainable performance.
This section highlights how advanced battery technologies and careful cell management are crucial for maintaining battery efficiency and durability under varying temperature conditions.
It is important to note that batteries last the longest when used at or just below room temperature (20°C). When a battery is used at 30°C instead of the just mentioned room temperature, its lifespan is shortened by as much as 20 percent. If you discharge or charge the battery at 45°C, the lifespan is only half of what can be expected when used at room temperature.
Efficient temperature management is crucial for maintaining battery performance and lifespan. The tips below can help your batteries perform optimally under all conditions.
Use: Avoid exposing devices with batteries to direct sunlight or in a car on a hot or cold day. If possible, keep the devices indoors or insulated.
Storage: Preferably store batteries in a dry, cool place at a (somewhat) constant temperature. As described earlier, extreme temperature fluctuations can negatively affect performance and lifespan.
Charging: Charge batteries at room temperature. Charging at extremely high or low temperatures can damage the battery, often making it less efficient.
Understanding the impact of temperature on battery performance and lifespan is crucial for optimizing energy storage. Factors such as operating temperature, cycle duration, and charging and discharging times play a significant role in how efficiently and sustainably batteries operate. At Elfa, we have deep knowledge of these complex factors and offer targeted solutions to maximize the efficiency of your battery usage.
As your partner in lighting and energy solutions, Elfa not only provides high-quality batteries and accumulators, but also the necessary expertise and support to make your projects successful. Whether it’s applications in electric vehicles, solar energy systems, or industrial settings, we are ready to assist you.
Contact us today to discover how Elfa can help you with your specific applications.
The story of lithium batteries begins almost a century ago, with G.N. Lewis paving the way in 1912. However, it wasn’t until the 1970s that we welcomed the first commercial non-rechargeable lithium batteries. These early batteries, however, brought their own problems, especially around stability and how they were used.
When the 1980s dawned, attempts were made to develop rechargeable lithium batteries, but these did not take off due to problems with the metallic lithium used. It was only in 1991, when Sony introduced the first commercial Li-ion battery, that lithium batteries really took off.
A significant advance was the contribution of John B. Goodenough, co-inventor of the lithium-cobalt-oxide battery. His innovation opened the door to the superior specific energy of Li-ion. Although his work was initially unrecognized, Goodenough later received the praise he deserved as a key figure in the development of lithium batteries.
Lithium-ion batteries are actually quite clever in their simplicity. They consist of three main parts: a positive electrode called the cathode, a negative electrode called the anode, and a type of conductive material called an electrolyte.
In these batteries, the anode is the negatively charged part, while the cathode is positively charged. The cathode is made of a type of metal oxide, while the anode is made from a special, porous carbon.
When you use a lithium-ion battery and it discharges, small particles called lithium ions move from the anode through the electrolyte to the cathode. At the same time, electrons are released that provide the electrical current we use. When you then recharge the battery, this process is reversed: the lithium ions move from the cathode back to the anode, absorbing electrons.
This constant ballet of particles traveling through the electrolyte and separator allows lithium-ion batteries to store and deliver the energy we need for everyday devices, like our phones, laptops, and electric cars.
Lithium-ion batteries are available in various variants, each with unique properties and applications. Although they all use lithium ions as an electrolyte, they vary in composition and performance characteristics.
One of the early variants of lithium-ion batteries used carbon coke as the anode material, but since the 1990s, most manufacturers have switched to graphite due to its more stable discharge curve. Graphite, a common form of carbon, offers a good balance between performance and stability and is therefore widely used in consumer electronics.
In addition, there have been innovative developments, such as the use of silicon-based alloys and nanostructured lithium titanate as anode additives. Silicon can theoretically store more energy than graphite, but it can lead to problems such as anode expansion during charging. On the other hand, lithium titanate offers excellent lifespan, loadability, and safety, although its specific energy is slightly lower.
Manufacturers are also experimenting with different cathode materials, such as lithium-cobalt-oxide, lithium-iron-phosphate, and lithium-manganese-oxide. Each of these materials has its own advantages and disadvantages in terms of energy density, lifespan, and safety.
In addition to differences in materials, there are also various cell configurations, such as Energy Cells, Power Cells, and Hybrid Cells. Energy Cells are optimized for high capacity and longer run times, while Power Cells focus on high power output. Hybrid Cells offer a compromise between the two, balancing capacity and power.
Choosing the right lithium-ion battery depends on the specific requirements of the application. Whether it’s portable electronics, electric vehicles, or energy storage systems, the diversity of available lithium-ion batteries offers a range of options to meet different needs.
Lithium-ion batteries offer several advantages, including high specific energy and loadability, long life, and ease of maintenance. However, they also have limitations, such as the need for a protection circuit to prevent thermal runaway and restrictions at high temperatures and during transport. Understanding these pros and cons is essential for effectively using and maintaining lithium-ion batteries.
Advantages:
Limitations:
Understanding the complex world of lithium-ion batteries is essential for optimizing their performance and lifespan. By gaining insights into factors such as cycle duration, charging and discharging times, and environmental influences, you can maximize the efficiency of your energy storage. At Elfa, we understand that choosing and maintaining the right batteries is crucial for the success of your projects.
As your partner in energy solutions, Elfa not only provides high-quality lithium-ion batteries but also expertise and support to make your projects a success. Whether it’s supplying batteries for electric vehicles, solar energy systems, or industrial applications, we are ready to assist you at every step of the process.
Contact us today and discover how Elfa can support you in implementing and maintaining lithium-ion batteries for your specific needs.
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