SES Lithium Metal Battery | SES Confirms Application for 2022 Gold Series Award · Top 100 New Auto Supply Chains in China

Application technology: SES lithium metal battery

Application field: Powertrainelectrification

Innovation and advantages

Technical Description:

At present, all countries in the world are accelerating energy transformation, transitioning from fossil fuels to clean energy, and enabling sustainable development.Mobility is a key area of ​​energy transformation, and batteries are the key to realizing vehicle electrification.The world's major car companies have successively announced to increase the layout ofnew energy sources, driving the explosive growth of lithium-ion battery production capacity.However, after more than 30 years of development, traditional lithium-ion batteries have gradually reached a performance bottleneck, especially the limitation of energy density, which greatly restricts the cruising range of vehicles.

In the periodic table of elements, lithium is the lightest metal element. As the negative electrode material of the battery, it can not only reduce the weight of the battery, but also give it an energy density that exceeds that of the lithium-ion battery. Therefore, the industry generally believes that the lithium metal battery is a power battery. The ultimate solution.

SES lithium metal batteries use the positive electrode material of conventional lithium ion batteries, but change the negative electrode from graphite to metal lithium, and the non-flammable high-concentration lithium salt electrolyte can be used in lithium metal batteries more safely and stably, fundamentally changing the lithium branch The growth method of the crystal is no longer a needle-like structure that easily pierces the diaphragm.To ensure battery safety, SES lithium metal battery solutions also include AI safety software to monitor battery health, providing early warning of battery anomalies weeks or more in advance.

unique advantage:

The biggest advantage of SES lithium metal batteries is to combine the high energy density of all-solid-state lithium metal batteries with the high manufacturability of traditional lithium ion batteries.

To improve the energy density of power batteries, there are usually four ways: 1. Optimize the negative electrode, 2. Optimize the positive electrode, 3. Reduce ineffective materials, and 4. Improve the efficiency of the battery pack.So far, most innovations in lithium-ion batteries have been focused on items 2, 3, and 4. There has been little significant progress in improving energy density through negative electrodes, and most traditional lithium-ion batteries still use graphite.Compared with other aspects, the innovation of negative pole is more subversive.If the energy density of traditional lithium-ion batteries is 260-280Wh/Kg, the starting point of lithium metal batteries can reach 400Wh/Kg.

In November 2021, SES displayed the world's first automotive-grade lithium metal battery. The preliminary test data is that the capacity is 107 Ah, the weight is 0.982 Kg, and the energy density is 417 Wh/Kg and 935 Wh/L. It is currently the world's largest capacity battery. lithium metal single cell.SES is further testing and optimizing the comprehensive performance of cells of this specification.

In addition, SES lithium metal batteries can maximize the use of traditional lithium-ion battery production lines and learn from their processes, thereby reducing uncertainty in production.

With its leading technology in the field of lithium metal batteries, SES has attracted the attention of many global first-tier car companies. Currently, SES has signed a joint development agreement with General Motors, Hyundai Motor and Honda for lithium metal battery A samples, which is currently the only one in the world. Agreement for the joint development of three lithium metal battery A samples.

Application scenarios:

The wave of electrification is accelerating, but it is only just beginning.Once commercialized, lithium metal batteries with higher energy density and safety factor and more balanced comprehensive performance will not only become possible for long- rangeelectric vehicles, but also accelerate the electrification transformation of future travel, such as eVTOL aircraft and electric planes that support intercontinental flight. , Electric heavy truck, etc.

Future prospects:

Currently, SES is preparing for mass production of lithium metal batteries in 2025.In terms of cell technology, we are in the A sample stage, and will gradually transition to B samples and C samples in the next few years, and mass production will begin in 2025.In terms of production and manufacturing, starting from the second half of 2021, SES is expanding its production and R&D center in Jiading, Shanghai, and the first phase of the project was completed in March 2022.After the second phase of the project is completed in 2023, the center will be officially upgraded to a 1GWh lithium metal battery super factory.

Introduction to the Golden Series Awards:

The "Golden Series Award" was initiated by Gasgoo with the aim of "discovering good companies and promoting good technologies". Powertrain electrification, thermal management, body and chassis technology, interior and exterior trim, environmental protection, lightweight and new materials, and ten sub-segments of service providers, select excellent companies and advanced technology solutions, and showcase these excellent companies to the industry and beyond Work with industry leaders to jointly promote the development and progress of the industry."2022 4th Golden Series Awards - Top 100 New Auto Supply Chains in China"application entry← Click to register (or scan the QR code below).