Big news for solid-state batteries!

In the secondary market on November 6, solid-state battery concept stocks became a beautiful landscape. Blue Ocean Huateng (300484), Fengyuan Shares (002805), Zijiang Enterprise (600210) and others all hit their daily limit, and Wanrun New Energy (688275) and Shanghai Xiba (603200) also performed well.

The progress of the solid-state battery projects of the above-mentioned enterprises is as follows:

The research and development of the high-energy era sulfide all-solid-state lithium battery invested by Blue Ocean Huateng is progressing smoothly, and the development of the 20Ah-class all-solid-state battery cell A has been completed.

Fengyuan shares are actively developing solid-state battery positive electrode materials and cooperating with Qingdao Energy of the Chinese Academy of Sciences to carry out corresponding research and development.

Zijiang Enterprise Holdings' holding subsidiary Zijiang New Materials has made early preparations in the field of solid-state batteries, has completed product certification with some solid-state battery manufacturers, and has carried out batch cooperation on semi-solid-state battery products.

Wanrun New Energy is a leading company in lithium battery positive electrode materials and has jointly carried out R&D projects such as solid polymer electrolytes, oxide and sulfide solid electrolytes with universities.

The joint innovation laboratory jointly established by Shanghai Xiba and the Shanghai Institute of Ceramics, Chinese Academy of Sciences has entered the final stage of solid-state battery development and design work...

On the news front, on November 5, Huawei announced its latest sulfide solid-state battery patent, entitled "Doped sulfide materials, preparation methods thereof, and lithium-ion batteries ."

Photo/State Intellectual Property Office

The background of the invention patent is that during the charge and discharge process of sulfide solid-state batteries, the interface side reaction between the metal lithium negative electrode and the sulfide electrolyte is serious, which affects the battery life. In response to this, the patent doped sulfide materials with materials including nitrogen elements make them more stable to metal lithium, and the prepared lithium-ion batteries have a longer service life.

Earlier on October 8 and September 3, BYD also announced two solid-state battery patents.

On October 8, BYD published a patent titled "All-solid-state battery, battery pack and electrical equipment", with the publication number CN 118748295 A and the application date of August 7, 2024...

Photo/State Intellectual Property Office

On September 3, BYD announced a patent called "All-solid-state batteries, battery packs and electrical equipment", with publication number CN 118589111 A.

Photo/State Intellectual Property Office

Solid-state batteries are accelerating

As funding is sought after and new patents are constantly being released, solid-state battery projects at major companies are also accelerating.

On November 7 (tomorrow), Tailan New Energy and Changan Automobile will hold a new solid-state lithium battery technology launch conference in Chongqing, which will bring brand-new solid-state lithium battery technology.

On November 5, Xinwanda said that it has further increased the energy density of solid-state batteries to 500Wh/kg by using lithium metal in the negative electrode, and currently has laboratory prototype samples. It is expected that the production of laboratory samples of all-solid-state batteries with an energy density greater than 700Wh/kg will be completed in 2027.

On October 26, Jiangxi Yili New Energy Development Co., Ltd.'s 500MWh sulfide all-solid-state battery mass production line was officially put into production, and all-solid-state battery products were also released.

On October 24, "Beijing Yizhuang" announced that the country's first all-solid-state lithium battery mass production line was officially put into production, capable of mass-producing 50 ampere-hour all-solid-state batteries.

On October 18, at the 2024 Chery Global Innovation Conference, Chery officially announced the Kunpeng battery brand, and its all-solid-state batteries will be put into targeted operation (on vehicles) in 2026 and mass-produced in the market in 2027.

On October 17, Beijing Weilan High-Performance Solid-State Lithium-Ion Battery Mass Production Project, a key project in Beijing, officially started. The project is planned to be built in three phases, focusing on low-altitude power, new energy vehicles and other fields.

On the morning of October 12, the groundbreaking ceremony for the Hami Haochen Xinghui 8GWh solid-state battery project was held in Hami High-tech Industrial Development Zone. After the project is completed and put into production, it will become the largest solid-state battery project in Xinjiang.

On the morning of October 9, the Zhangzhou High-tech Zone held a concentrated opening and completion ceremony for the fourth quarter of 2024 projects and the groundbreaking ceremony for the New Digital Energy Solid-State Battery (Zhangzhou) Industrial Park. The high-performance gel solid-state lithium battery project, after completion and reaching full production, can achieve an annual output of 2.5GWh of gel solid-state lithium batteries...

This is just an incomplete statistics of solid-state battery news since October.

Solid-state batteries are getting closer

It is generally believed in the industry that commercial mass production of automotive-grade all-solid-state batteries will be after 2028. However, there are constant reports that solid-state batteries will be commercially mass-produced before 2028.

It is reported that CATL's all-solid-state batteries have entered the trial stage and are expected to achieve small-scale production in 2027.

Qingtao Energy's semi-solid-state batteries are installed in SAIC Zhiji models. The company is promoting the mass production of solid-state batteries at the "100,000-vehicle level" by 2025.

Yu Huigen, chairman of WeiLan New Energy, said that it is entirely possible to conduct small-scale verification of all-solid-state batteries on complete vehicles in 2027.

Yiwei Lithium Energy Expected to launch all-solid-state batteries in 2026.

The low-key BYD has revealed a very specific solid-state battery plan:

From the perspective of technology route selection, Farasis Battery is very likely to have chosen the high-nickel ternary (single crystal) + silicon-based negative electrode (low expansion) + sulfide electrolyte (complex halide) technology route.

The capacity of Fudi's solid-state battery cells can reach more than 60Ah, the mass energy density can reach 400Wh/Kg, the volume energy density can reach 800Wh/L, and it will not catch fire or explode when punctured or in a hot box. At the same time, taking into account the battery system and vehicle efficient integration technology under the performance requirements of thermal management, safety, and fast charging, the battery pack energy density exceeds 280Wh/Kg.

In terms of cost control, the cost reduction plan for sulfide (or sulfide + halide composite) solid electrolytes, which account for the absolute cost proportion, is to reduce the cost of LiS by 1500%-2000% by 2027 compared with 2024. In 2030, through the improvement and optimization of the synthesis process, the cost will be reduced by another 30%-50% compared with 2027. In 2033, the cost will continue to be reduced by about 20%-30% through scale efficiency.

In terms of the cost of solid-state batteries, the overall material BOM cost is planned to be reduced by 2000%-3000% in 2027 through the cost reduction effect of solid-state electrolytes, and then the manufacturing cost will be reduced by 30%-50% by improving product yield + scale effect + process optimization, making it extremely price competitive.

In terms of the mass production schedule, it is consistent with national policies and most companies. Small-scale production will be carried out in 2027 and installed on BYD's high-end models as a demonstration project, with a scale of only about 1,000 units; 2030 is the market promotion period, and it is expected that 40,000 vehicles will be equipped with all-solid-state batteries, and will begin to move down to models in the mainstream price range; 2033 will enter a rapid expansion period, and it is expected that 120,000 vehicles will be installed on a large scale, and the market share of all-solid-state batteries will gradually increase.

Last words

In my country, semi-solid-state batteries have achieved significant results, and many companies have announced progress in related technologies, cooperation, and industrialization. At present, the penetration rate of semi-solid-state batteries in vehicles has reached 1%!