"Cobalt-free" is Approaching, Can Full Solid State Be Far Behind?
"Cobalt-free" batteries are an ideal form of lithium ion batteries. In ternary materials, the role of cobalt is to stabilize the layered structure of the material, and to improve the cycle and rate performance of the material. Although excessive cobalt will also cause the actual capacity to decrease, the lower the cobalt content, the stability of the battery The lower it is, the more dangerous it is. Therefore, cobalt is also called "cobalt grandma". On the one hand, it plays a great role in the safety of ternary batteries. On the other hand, it is the market price of cobalt as a rare metal, which is also a major factor in the high cost of ternary batteries. the reason.
"No Cobalt is Approaching"
Many scientists are looking for a way out for lithium batteries, and "cobalt-free" has become a research focus. A few days ago, Honeycomb Energy successfully held the "Cobalt-free·Core Future" Battery Day event. Tesla, the first cobalt-free concept, failed to materialize on Battery Day in September this year. As the earliest domestic development of cobalt-free materials and batteries, Honeycomb Energy has made substantial progress on this battery day: it announced that cobalt-free batteries will accept customer orders. The official announcement of acceptance of the reservation means that Honeycomb Energy’s cobalt-free battery will enter the countdown phase of mass production. By then, it will also become the first battery company in the world to achieve mass production of cobalt-free batteries.
"Full Solid State is On The Way"
"Cobalt-free" batteries are "growing" gratifyingly, and new progress has been made on the all-solid-state side.
In recent days, QuantumScape has backdoor listed. Before going public, the company received $380 million in investment from Volkswagen and received funding from technology investors such as Bill Gates, Breakthrough Energy Ventures, Khosla Ventures, and KPCB. QuantumScape claims that the cruising range provided by its solid-state batteries is about 80% higher than that provided by current lithium-ion batteries.
The key breakthrough of this solid-state battery is the use of ceramic separators to replace the liquid electrolyte used in traditional batteries as a medium for the flow of positive and negative ions. This ceramic is flexible, not rigid. In the extremely cold temperature of minus 30 degrees Celsius, energy can continue to move throughout the battery. This temperature will cause other solid-state designs to fail to operate, or severely reduce the performance of wet lithium-ion batteries.
Volkswagen also promised to invest more funds in QuantumScape to fund the production of batteries for the joint venture between the two parties, hoping to use the company's solid-state batteries in cars by 2025.
In addition to QuantumScape, leading auto companies such as Toyota and Nissan are also stepping up their deployment of solid-state batteries.
According to reports, the solid-state battery car currently being developed by Toyota has a cruising range of more than twice that of traditional lithium-ion batteries under the same conditions. Even for the most compact models, there is no need to deploy more batteries and sacrifice internal space. For a car equipped with a solid-state battery, a full charge only takes about 10 minutes, which is at least two-thirds less than a traditional electric car.
As early as the beginning of 2018, the Renault-Nissan-Mitsubishi alliance established a $1 billion venture capital fund, and its first investment was the research and development of cobalt-free solid-state batteries by Ionic Materials. Renault Senior Vice President Gilles Normand (Gilles Normand) publicly stated that by 2025, Renault’s electric vehicles may use solid-state batteries with zero cobalt content.
In fact, in addition to automakers, the upstream of the Japanese automotive supply chain has also begun to make arrangements for this technology. The above report stated that Mitsui Kinzoku will build a test plant in Saitama Prefecture to produce solid electrolytes for this battery. It is expected that the annual output will reach tens of tons from next year, which is enough to meet the industry’s demand for prototype products. . Japanese oil company Idemitsu Kosan also deployed solid electrolyte production equipment at its production base in Chiba City, and hopes to start operations next year.
Whether it is a cobalt-free battery, an all-solid-state battery, or a cobalt-free all-solid-state battery, it is the development direction of the post-lithium battery era, but the technical difficulties and high cost are still the threshold that has not been crossed before the technology is successfully implemented. Compared with fuel vehicles, only by solving the technology and cost issues can the market competitiveness of new energy vehicles be enhanced. This is not only for the benefit of enterprises, but more importantly, it can contribute to the easing of global climate conflicts.
Publisher: Powder Network from: http://www.batterycloud.com.cn/newsDetail?infoId=324