Domestic nano-scale solid-state sodium-ion batteries roll off the production line, looking forward to the development of solid-state batteries in China in 2024

With the rapid development of global energy transformation and new energy vehicle industry, solid-state battery, as a new battery technology with high energy density, long life and high safety, has become an important development direction in the future battery field. The Chinese government attaches great importance to the development of the solid-state battery industry and actively promotes technological innovation and industrial layout. At the beginning of this year, the first domestically produced large-capacity and high-energy-density nano solid-state sodium-ion battery pilot product was successfully launched, marking an important breakthrough in China's solid-state battery technology.

Technical characteristics of domestic nano-scale solid-state sodium ion batteries

1. High energy density

Domestic nano-scale solid-state sodium-ion batteries use advanced nanomaterials technology, which makes the battery have a higher energy density. Compared with traditional liquid lithium-ion batteries , the energy density of solid-state sodium-ion batteries has increased by more than 30%, reaching more than 250Wh/kg, and is even expected to exceed 300Wh/kg. This means that at the same volume or weight, solid-state sodium-ion batteries can store more electricity and provide new energy vehicles with a longer range.

2. Long life

固态钠离子电池具有较长的循环寿命。由于采用固态电解质，电池内部不存在液态电解质易泄漏、腐蚀等问题，因此电池的寿命得到了显著提升。实验室测试结果表明，国产纳米级固态钠离子电池的循环寿命可达10000次以上，远高于传统液态锂离子电池的寿命。

3. High security

Solid-state sodium-ion batteries use solid electrolytes, which have good thermal and chemical stability. Under extreme conditions such as high temperature, overcharge, and short circuit, solid electrolytes are not easy to burn or explode, effectively reducing the safety risks of batteries. In addition, solid electrolytes can also effectively inhibit the growth of lithium dendrites, reduce the risk of internal short circuits in the battery, and improve the safety of the battery.

4. Low cost

Sodium is abundant in the earth's crust, widely distributed, and inexpensive. Compared with lithium, the extraction and processing costs of sodium are lower, which helps reduce the production cost of solid-state sodium-ion batteries. In addition, the structure of solid-state sodium-ion batteries is relatively simple, and there is no need to use a large amount of precious metal catalysts and diaphragm materials, which also helps to reduce costs.

Development trend of China's solid-state battery industry in 2024

Policy support

The Chinese government attaches great importance to the development of the solid-state battery industry and lists it as a strategic emerging industry. In recent years, a series of policy documents have been issued at the national level to clarify the development goals and key tasks of the solid-state battery industry. For example, the "New Energy Vehicle Industry Development Plan (2021-2035)" proposes that by 2025, the energy density of solid-state battery monomers will reach more than 400Wh/kg and the cost will be reduced to less than 1 yuan/Wh. The introduction of these policy documents has provided strong policy support for the development of the solid-state battery industry.

Technological innovation

China's solid-state battery technology has achieved world-leading results. In terms of material research and development, battery design, manufacturing technology, etc., China's scientific research teams have continuously made breakthroughs. For example, the solid electrolyte material developed by the Ningbo Institute of Materials, Chinese Academy of Sciences, has the characteristics of high ion conductivity and low interface impedance ; the solid-state battery preparation technology developed by Tsinghua University has achieved efficient and stable production of batteries. These technological innovations have laid the foundation for the development of the solid-state battery industry.

· Industry chain Layout

As solid-state battery technology continues to mature, Chinese companies have stepped up their efforts in the field of solid-state batteries. At present, dozens of companies have entered the solid-state battery industry chain, involving materials, equipment, battery manufacturing and other links. For example, well-known companies such as CATL and BYD have invested in solid-state battery projects to promote the rapid development of the industry. In addition, upstream and downstream companies in the solid-state battery industry chain are also strengthening cooperation to jointly promote industrial development.

Market demand

As the new energy vehicle market continues to expand, the demand for high-performance batteries is growing. As a new type of battery with high energy density, long life and high safety, solid-state batteries are expected to become the mainstream power battery for new energy vehicles in the future . According to forecasts, by 2025, the sales volume of new energy vehicles in China will reach 7 million, providing huge development space for the solid-state battery market.

The successful launch of the domestically produced nano-scale solid-state sodium-ion battery marks an important breakthrough in my country's solid-state battery technology. Driven by policy support, technological innovation, industrial chain layout and market demand, my country's solid-state battery industry is expected to achieve rapid development in 2024. However, the solid-state battery industry still faces many challenges, such as improving material performance, optimizing manufacturing processes, and reducing costs. In the future, my country should continue to increase R&D investment, promote the maturity of solid-state battery technology, and provide strong support for the sustainable development of the new energy vehicle industry.

Dianchi's solution

In 2023, after technical breakthroughs, the research and development team of Wuhan Dianchi New Energy Co., Ltd. successfully launched the DC IPT 2000/2000Pro in-situ gas internal pressure tester, providing a new solution for lithium battery testing. This product solution has been recognized by advanced companies in the industry and has the following advantages:

Direct puncture, accurate measurement

Traditional Archimedean method, ideal gas equation or other "indirect methods" have the problems of cumbersome experimental process and large measurement error. The DC IPT 2000/2000Pro directly samples and measures the gas and pressure inside the lithium battery. Through the direct measurement method of lithium battery puncture sampling, real and accurate data can be quickly obtained, thereby greatly improving the quality and efficiency of inspection.

Gas sampling, all-inclusive

The incompatibility of the "indirect method" measurement increases the cost of battery testing. In order to solve this problem, the Wuhan Dianchi New Energy R&D team designed a new "lithium battery gas sampling interface (GSP)", which is "soft and hard compatible" - it can simultaneously measure various types of batteries such as soft-pack batteries, square batteries and cylindrical batteries. Conveniently and quickly evaluate battery safety performance. The DC IPT 2000/2000Pro measurement method not only improves test efficiency, but also reduces test costs and risks.

① Efficient and convenient: Users do not need to switch between different measurement devices or wait for adaptation, which improves test efficiency and reduces manpower and time costs.

②Accurate data: Use advanced measurement technology and algorithm analysis to ensure the accuracy and reliability of data.

③ High repeatability: Standardized interface design and measurement process ensure the repeatability and consistency of results, which is conducive to comparative analysis.

Network interface , cloud data

Data is also productivity, and efficient information transmission can quickly predict the quality status of each battery.

DC IPT 2000/2000Pro preset network interface enables data to be connected to the cloud and to interact and share data with other test equipment or systems. Enterprises can build a complete battery test and management system to achieve comprehensive management and analysis of battery test data and master quality conditions.

Multi-channel customization, high-throughput testing

The DC IPT 2000 /2000Pro standard model is designed with 8 channels, and can be customized to have a higher number of channels to meet the testing needs of multiple scenarios. Each channel uses an independent measurement circuit to ensure the accuracy and consistency of the test. Whether it is a large enterprise or a research institution, you can choose the appropriate number of channels and configuration according to your own testing needs and scale.