Lithium Ion Battery

Lithium ion batteries are used in small devices like cordless irons and vacuum cleaners, electric vehicles, and even some medical equipment. They are also increasingly being used for grid-scale energy storage.

These batteries use expensive and rare minerals. They require a precise mix of ingredients to achieve the right voltages, and slight changes can compromise performance.

Energy density

The energy density of a battery is the amount of electrical energy it can store per unit of volume. It is usually expressed in watt-hours (Wh/kg) or volt-hours (Vh/kg). It can be determined by multiplying the capacity of the battery by its rated voltage.

The high energy density of lithium batteries makes them ideal for use in consumer electronics like laptops, cell phones and digital cameras. They can also be used for powering electric vehicles and storing power in stationary applications. They are also the primary power source for many remote-control devices and the Curiosity rover on Mars.

Another benefit of lithium-ion batteries is their long lifespan. However, they can lose their capacity over time due to internal degradation. This Lithium Ion Battery can be caused by temperature, battery age or an unbalanced state of charge.

A common cause of internal battery degradation is the formation of a solid electrolyte interface (SEI). This film becomes thicker over time and depletes the available lithium inventory, which reduces cycle life. The degradation of the organic carbonate electrolyte also causes the battery to produce gas.

To counter this effect, lithium-ion battery manufacturers are introducing new chemical combinations and improving existing ones. These new combinations are free from rare or toxic elements and have lower standard electrode potentials than traditional LIBs. This makes them a viable alternative to nickel-metal-hydride and lead-acid batteries.


The lithium-ion battery uses a special electrolyte solution to create lithium ions, which are then used to store energy in the electrodes. This chemistry allows for superior battery performance and a much higher density than other rechargeable batteries. However, the lithium ions are highly volatile and flammable, making them susceptible to fire and explosions if mishandled. This is why batteries require careful handling and are often only reusable in certain applications.

During normal operation, a lithium-ion battery will generate a significant amount of heat as it performs its anodic and cathodic reactions. Normally, this heat is dissipated by the surrounding materials and ambient temperature. However, if this heat cannot be efficiently dissipated in certain charge/discharge states, internal side reactions can trigger thermal runaway and cause the battery to overheat.

A fire caused by a lithium-ion battery is difficult to extinguish, due to the thermal runaway phenomenon. While water-based fire extinguishers can temporarily cool the flames, it may not fully extinguish them until the battery’s internal side reactions have been completely stopped. This can take hours, or even days in some cases.

A battery’s safety can be impacted by the surrounding environment, its design and abuse tolerance. To reduce the risk of a fire, it is important to follow the manufacturer’s instructions regarding handling and proper disposal. Additionally, avoid buying second-hand or online batteries from unknown or unregulated vendors.


While lithium batteries are not a lifetime investment, their longevity plays an important role in powering consumer and durable goods like laptops, tablets, digital cameras, portable medical equipment and electric vehicles. A typical rechargeable li-ion battery can be expected to last 2-3 years or 300-500 charge cycles. A charge cycle is defined as a period in which the battery is fully discharged, then fully charged and recharged again.

Despite their high energy density and long lifespan, lithium-ion batteries are subject to degradation by environmental factors such as temperature and charging practice. For example, heat accelerates the degradation of both the positive Lithium Ion Battery and negative electrodes by increasing internal resistance. It also shortens runtime, reducing the amount of time a lithium-ion battery can be used before reaching 80% of its rated capacity.

In addition, the amount of energy a lithium battery can deliver decreases over time due to capacity fade. The degradation rate of a battery can be accelerated by a number of conditions, including overcharging or undercharging the battery and storing the battery in an uncharged state.

To maximize the longevity of a lithium-ion battery, users can reduce the rate of degradation by following best practices. For example, keeping the battery cool and storing it in a dry place can significantly increase its lifespan. Additionally, reducing the peak charge voltage of the battery can increase its lifespan. As a guideline, every 0.10V drop in the charge voltage reduces a battery’s cycle life by about 10%.


Customizability is an important consideration for lithium batteries, especially in industrial applications. Lithium battery customization allows for a high level of energy density and endurance while meeting the specific requirements of a particular application. However, customizing a lithium battery can be expensive and time-consuming. For this reason, it is best to work with a manufacturer that has experience and can deliver quality products on time.

A good lithium battery manufacturer will offer a wide range of customizable options. For example, they will be able to adapt the battery’s size to fit the device it is powering. They will also have the ability to customize the battery’s voltage and capacity. Additionally, they will be able to provide customized cooling solutions and charging systems.

The customization process begins with a feasibility study and product design, and then the project is approved by both parties. Once the project is complete, it can be delivered within 15 days. This timeline includes a preliminary function test and cycle aging tests.

Customized lithium batteries can also meet your special requirements for low-temperature and high-temperature working conditions. Polinovel has a professional sourcing team that can find the most suitable raw materials for your needs. This will help ensure the high reliability of your custom lithium battery. In addition, you can choose from a variety of different packaging options for your customised battery.

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