Displaying items by tag: batteries

Switzerland/France: Holcim is collaborating with Engie and and the French National Institute of Applied Sciences (INSA) Lyon to develop a cement-based energy storage technology to serve as an alternative to batteries. The solution will use cement hydration to store heat as energy and release it when needed in an infinitely repeatable cycle. The partners say that it will make energy storage local, safe, affordable and recyclable.

Holcim’s head of global innovation Edelio Bermejo said "The world needs innovative solutions to accelerate our shift towards renewable energy generation, distribution and storage – all areas in which Holcim can play a big part. With this collaboration, we are moving energy storage forward, opening up a new range of solutions based on materials that are local and recyclable."

Japan: Taiheiyo Cement has developed Nanoritia, a lithium manganese iron phosphate salt for use as a positive electrode material for lithium-ion batteries. The company says that the product has ‘excellent’ thermal stability and does not contain cobalt or nickel, which can sometimes be harder to source. As a result of the success, it will establish a 100t/yr nanoritia plant at its Central Research Laboratory in Sakura city, Chiba prefecture.

The group said, “We will proactively and swiftly develop and commercialise the production technology of this product, and contribute to the reduction of CO₂ emissions through the provision of materials for lithium-ion batteries. We will continue to strongly promote the group's management philosophy of business activities that are in harmony with not only economic development but also consideration for the environment and contribution to society, aiming to play a leading role in opening up a sustainable future for the earth.”

The cement and minerals producer has also been working on recycling large lithium-ion batteries at its integrated Tsuruga plant.

In case you missed it, last week we covered a news story about Taiheiyo Cement’s plans to step up its lithium-ion battery recycling business at its integrated Tsuruga plant. It’s the latest step in the Japan-based cement producer’s collaboration with recycling company Matsuda Sangyo. The work is timely given that electric cars accounted for 2.6% of global car sales in 2019 and this share is growing. Many of these electric vehicles use lithium-ion batteries and moving away from fossil fuel powered transport creates new problems such as how to manage old batteries that can no longer be used.

Figure 1: Lithium-ion battery recycling process by Taiheiyo Cement and Matsuda Sangyo. Source: Translated from Taiheiyo Cement CEMS technical magazine.

Taiheiyo Cement and Matsuda Sangyo have been working on their process since 2011. First, they dismantle the batteries to extract base metals and plastics. They then heat the batteries in a dedicated ‘roaster’ using waste heat from the cement production process, before crushing and sorting them to remove cobalt, lithium, aluminium and scrap iron. Hydrogen fluoride produced in this stage is sent to the kiln where it is detoxified by calcium. Remaining elements from the battery that are not reclaimed are then used as an alternative fuel by the cement plant.

Taiheiyo Cement says that its roasting equipment can process up to 10t/day but it’s difficult at this stage to assess what demand for this service they might encounter. If, one estimate of 2m/yr used lithium-ion batteries by 2030 is correct and Taiheiyo Cement’s processing rate doesn’t get much higher, then 500 cement plants could possibly solve this problem. Yet, Taiheiyo Cement and Matsuda Sangyo have made no mention of the economics of their process. Other recycling methods also exist and research into new ones is ongoing. Cement plants recycling batteries might be economic compared to these alternatives or it might not, only time will tell.

The wider point here is that here is yet another industrial and logistical process that can potentially be linked to cement production. It follows well known ones, such as using alternatives fuels or captive power plants, or more novel ones, such as CO₂ or hydrogen networks. In each case the business of making cement changes as new methods are learned, new commodities are sought and new markets are connected. The cement company then has a choice about how involved it wants to become with each new process. The classic example here is the waste processing companies that surround co-processing, with some cement companies having their own dedicated subsidiaries, for example LafargeHolcim and Geocycle.

As it all becomes more complicated the role of a cement plant slowly becomes redefined. If a cement plant disposes of municipal waste and car batteries for its local community, generates electricity from its solar or wind plant for a nearby city and uses its CO₂ to either produce biofuels, plastics or baking soda is it still just a cement plant? The pivot by building materials manufacturers in recent years from a focus on cement to concrete suggests that once the societal or economic conditions are right it could change. For the time being cement plants remain cement plants but give it a thought next time you buy a new car.

Japan: Taiheiyo Cement is starting large-scale recycling of large lithium-ion batteries at its integrated Tsuruga plant. It has been developing the process with Matsuda Sangyo since 2011 using exhaust gases from clinker production as part of dismantling, crushing and sorting processes to extract precious metals from the batteries. Taiheiyo Cement, its subsidiary Tsuruga Cement and Matsuda Sangyo started a recycling business in April 2020 following certification by the Japan Auto Recycling Partnership (JARP).