sodium-ion batteries


2024-04-01

[News] Japan and EU Reportedly Collaborate on Advanced Materials Research to Reduce Over-Reliance

Japan and the EU are reportedly set to launch formal cooperation in the research and development of advanced materials, such as chips and electric vehicle batteries. According to a report from NIKKEI, this initiative aims to decrease their high reliance on suppliers from China. Iliana Ivanova, Commissioner for Innovation and Research at the EU, revealed that the two parties will establish a collaborative framework in April.

As per the same report, Commissioner Ivanova stated during an interview that both Japan and the EU remain globally leading in advanced materials innovation. In 2020, the EU’s investment in this industry totaled EUR 19.8 billion, while Japan’s amounted to EUR 14 billion.

Under the framework tentatively named “Dialogue on Advanced Materials,” Japan and the EU plan to hold regular meetings to discuss collaboration proposals. Institutions engaged in advanced materials research from both sides will also participate. Commissioner Ivanova highlighted that the areas of cooperation include renewable energy, transportation, construction, and electronic materials. She also expressed hope for Japan and the EU to jointly develop international standards for advanced materials.

The report highlights a specific area of focus: the development of sodium-ion batteries, which are seen as the most promising next-generation power source for electric vehicles.

In recent years, the rapid growth of the global electric vehicle and energy storage markets has driven robust demand for lithium-ion batteries. As per TrendForce’s data, with further expansion expected in these sectors, the demand for lithium batteries is projected to continue growing, surpassing 3200GWh in global shipments by 2027.

Currently, China dominates the global lithium battery supply chain system, including battery metal refining, battery material processing, and battery manufacturing. Per TrendForce, more than 75% of lithium batteries worldwide are currently produced in China, making it the global leader in lithium battery manufacturing capacity.

In regard to China’s competitive advantage in the LiBs field today, it’s difficult for Japanese and South Korean companies to surpass. And it’s even more challenging for the US and Europe to catch up with China, due to the weak foundation of LiB industry locally. However, the emergence of inexhaustible and inexpensive sodium batteries may have offered a solution for the world to reduce its reliance on China.

Sodium-ion batteries do not require the use of rare metals controlled by China and have lower production costs compared to traditional batteries. The EU hopes to make progress in this area to meet the increasing demand brought about by the transition to electric vehicles.

Additionally, the EU aims to leverage Japan’s leading knowledge in metal nanoparticle technology, which can enhance solar energy conversion efficiency. Nanoparticle materials can also help smartphones save energy. In the future, the EU plans to allocate significant funding to advanced materials research, fully supporting related research and large-scale production.

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Please note that this article cites information from NIKKEI.

2023-04-26

Is Sodium-Ion the Future of EV Batteries?

Sodium-ion batteries are burgeoning as a popular alternative to lithium-ion batteries, thanks to the efforts of Chinese automakers who are pushing for its mainstream adoption.

Leading Chinese companies like CATL and BYD are ramping up the production of sodium-ion batteries. In mid-April, CATL and Chery unveiled their new battery brand, “ENER-Q”, which includes full product lines including sodium-ion, iron phosphate lithium, and ternary lithium batteries. Chery’s new energy vehicles will be the first to use CATL’s sodium-ion batteries.

Following CATL, BYD is rumored to start mass production of its sodium-ion batteries in the second half of this year, which will be used in its compact hatchback, the Seagull series. Both the moves have once again sparked discussions about battery technology in the market.

Geopolitical risks fuels Sodium-ion Batteries

Considering market supply and technical stability, lithium-ion batteries and iron phosphate lithium batteries are still the most popular types of batteries for electric vehicles. The former has a higher energy density but contains cobalt and nickel, which drives up costs. The latter has a lower cost but a lower energy density.

Sodium-ion batteries, on the other hand, have been overlooked due to their low energy density compared to traditional lithium-ion batteries.

So, why are companies like CATL and BYD turning to sodium-ion batteries?

Geopolitical risk is a major factor. Most lithium mines are located in countries like the US, Australia, and Canada. In today’s anti-China political climate, these materials could be used as bargaining chips to curb China’s electric vehicle industry. China won’t want to be at the mercy of other countries when it comes to the fate of its EV industry, so developing new technological routes is crucial.

From a mass production perspective, sodium is a more abundant element in the Earth’s crust than nickel, cobalt, or lithium carbonate, with a distribution that’s more evenly spread out. As such, sodium could be a better fit as a positive electrode material in batteries in the long run. Industry experts predict that sodium-ion batteries could even cost 20% less than iron phosphate lithium batteries once it reaches economies of scale.

The Supporting Actor in EV Batteries

However, a closer look into the pros and cons of both the materials may reveal that it’s not a zero-sum game. Instead, their characteristics can complement each other and help to accelerate battery technology development.

CATL’s new sodium-ion battery has an energy density of up to 160Wh/kg, which is comparable to the iron phosphate lithium battery in its Kirin battery system, but still lags behind the 255Wh/kg of ternary lithium batteries.

As a result, CATL is mixing sodium-ion and ternary lithium batteries in Chery’s new energy vehicles to balance cost and performance.

BYD is also expected to use a mix of sodium-ion and iron phosphate lithium batteries. Assuming this is true, it will echo the market’s assumption that sodium-ion batteries are not overturning the battery industry, but rather helping battery manufacturers maintain flexible product portfolios that cater to different market segmentations.

To give an example, CATL’s lithium iron phosphate batteries have been utilized in heavy-duty vehicles like 120-ton ore trucks and marine service vessels since 2022, where charging efficiency and cost take precedence over high energy density.

Therefore, sodium-ion batteries are likely to become a complimentary choice for lithium iron phosphate batteries, as they offer advantages such as high-rate charging, low cost, and high safety. This will definitely give car makers more flexibility in their future product strategies.

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