Silicon-carbon composite anodes for military and automotive applications

Rick Costantino – Co-Founder and CTO Group 14 Technology

0:00:02   Greetings. My name is Dr Rick Costantino co founder and CTO of Group 14 Technologies and I'm here
0:00:11   today to tell you about group fourteens Silicon based an ode battery material. This material is
0:00:17   ready today for commercial manufacturing, easily integrated into current battery manufacturing lines
0:00:25   and boost the energy density up to 30 to 70% over traditional of the theme ion batteries group
0:00:33   Fourteens Lithium Silicon technology has attracted the attention of some of the most prominent
0:00:39   partners in the global battery industry. This technology has been scaled with the support of the U.
0:00:46   S Department of Energy Vehicle Technology Office and last year we earned a second contract to
0:00:53   provide the d o E with batteries meeting their performance requirements for vehicle electrification
0:01:03   group Fourteens Industrial partners from around the globe include at L, the world's leading producer
0:01:10   of lithium ion batteries, SK Materials AH, leading producer of industrial gasses and part of the
0:01:17   larger SK Group. Cabot Corporation, the world's largest producer of carbon blacks and a leading
0:01:25   innovator of carbon based battery materials, B. A S F, the largest chemical producer in the world
0:01:32   and a leading manufacturer of cathode materials and show Adecco, the world's largest supplier of
0:01:40   ultra high powered graphite electrodes. This diverse and unparalleled group of strategic investors
0:01:48   provides validation of group fourteens technology from the global leaders in the battery space.
0:01:58   Group 14 has designed a material providing the ideal combination of silicon and carbon that enables
0:02:05   the next generation of lithium silicon batteries.
0:02:12   So how does this technology work? Group Fourteens flagship product SCC 55 is a particle with three
0:02:23   key features. The first feature is the carbon scaffold. Carbon provides for good electrochemical
0:02:31   properties, including a surface known to have a stable solvent electrolyte interface or S E I layer.
0:02:41   The carbon scaffold is porous, which allows it to contain the second key feature, namely, silicon.
0:02:49   Silicon provides for high capacity 10 times higher than graphite. However, up to now silicon is
0:02:57   propensity for volume. Expansion upon cycling has lead to unstable S. C I and poor cycle stability,
0:03:04   thus limiting its application as a practical and material. In the case of SEC 55 the poorest carbon
0:03:12   scaffold has been specifically nano engineered to protect the silicon within the carbon and maintain
0:03:18   the silicon in the most preferred form that is amorphous and nano sized and it does this by
0:03:26   providing the third key feature, which is three internal void. This void is tuned to give room
0:03:34   within that particle for the silicon to expand as it cycles. S E C 55 is perfect combination of
0:03:43   carbon silicon and void delivers very high energy density while maintaining that advantage for
0:03:51   hundreds or even thousands of cycles.
0:03:58   So how do we make this particle? Well, we call our manufacturing strategy scaffold prime. At the
0:04:07   foundation of the scaffold, Prime strategy is the poorest carbon scaffold. This scaffold allows us
0:04:15   to create and maintain silicon in that preferred form that is, that amorphous and nano sized form by
0:04:23   mass sec 55 is equal parts carbon and silicon by volume. As you see, 55 is equal parts carbon
0:04:33   silicon and void.
0:04:37   Scaffold Prime comprises two process steps. The first step is production of the carbon, which we
0:04:45   accomplished in a single step in a single reactor. We call the carbon production process dry. Raul
0:04:52   Icis. This environmentally friendly process does not require any solvent and utilizes readily
0:04:59   available ultra high purity raw materials. Silla Genesis is our second process step where we produce
0:05:09   the silicon in a single step in a single reactor. This process is highly efficient and also utilizes
0:05:16   readily available Precursor materials. Both dryer analysis and Cilla Genesis employ materials and
0:05:24   reactor technologies that air readily scalable and ready for commercial production. Today.
0:05:36   Currently s E C 55 is under evaluation across various applications, from military use to consumer
0:05:44   electron ICS to electric vehicles. Even at a low blend of 20% with graphite, S E C 55 is delivering
0:05:54   a 30% boost in energy density for well over 1000 cycles.
0:06:03   Here is a specific example off the kind of performance our customers can achieve using SEC 55 at a
0:06:11   low loading of 20% blended it with graphic in the an ode. In this case, a third party built full
0:06:18   cell batteries, comparing SEC 55 as the an ode material blended with graphite to both silicon oxide
0:06:26   and standard graphite. As can be seen in this graph, silicon oxide provides for only a modest boost
0:06:33   in energy density, and the slight advantage rapidly faded with cycling. In contrast, SEC 55 boosts
0:06:42   the energy density of the battery by 30%. Even at this low blend in the an ode S S C 55 maintains a
0:06:51   significant advantage over both silicon oxide and graphite for over 2000 cycles. Mhm
0:07:04   while SEC 55 performance. That low loading is very compelling. Here is where things get really
0:07:11   interesting. When used 100% as theano active material, SEC 55 can deliver a tremendous 70% energy
0:07:21   boost compared to traditional lithium ion batteries. This graph depicts full cell data from one of
0:07:29   our customers who achieved just that. In this case, the boost in energy density was maintained for
0:07:36   at least 500 cycles, well within the stability requirements for many customer applications.
0:07:47   Regardless of loading or application, S E. C 55 is easy to use. Our customers don't need to upgrade
0:07:55   their current battery manufacturing equipment, shaving off long lead times for implementation, not
0:08:01   to mention saving them millions of dollars in switching costs.
0:08:10   While SEC 50 fives electrochemical property stand out, it looks and processes just like graphite.
0:08:18   That means that our customers can use their existing slurry and electrode making equipment as well
0:08:23   as their same battery manufacturing line. This seamless integration allows for rapid evaluation
0:08:29   without significant changes to other cell components. For instance, implementing SSE 55 does not
0:08:37   require any change to the separator. As you see, 55 has very high first cycle efficiency, rivaling
0:08:45   that of incumbent graphite and avoiding any need for proliferation. This very high for cycle
0:08:51   efficiency translates into less wasted excess cathode, resulting in further increased energy density
0:08:58   and cost savings in the battery.
0:09:02   This allows for true drop in power for any solution, with the best of both worlds from the ideal
0:09:10   fusion of silicon and carbon high energy density. Fast charging an exceptional stability.
0:09:22   Let's dive into a bit more regarding S E C 55 outstanding first cycle efficiency for any percentage
0:09:29   blend with graphite has shown, with the dotted line drawn from 0% loading to 100%. Loading SEC. 55
0:09:37   delivers a solution for lithium silicon batteries without any compromise in the first cycle.
0:09:43   Efficiency for 100% loading of SEC 55. As the interactive material as shown on the top right hand
0:09:51   portion of the graph, our third party measured first cycle efficiency of 92% equaling the best graph
0:09:59   fights that are out there. Other an ode materials with lower first cycle efficiency compared to
0:10:05   graphite. Such a silicon oxide simply can't compete with SEC 55 at any portion of the loading range.
0:10:18   I'm excited to say that group Fourteens team of scientists and engineers have taken SEC 55 out of
0:10:25   the lab and into commercial manufacturing. S E C 55 is available right now.
0:10:37   To date, Group 14 has already shipped hundreds of kilograms of SEC 55 to partners and customers
0:10:44   throughout the United States, Europe and Asia. This experience has led to establishing our first
0:10:52   commercial plant, which will be online this quarter to fulfill multi ton orders. And that's just the
0:10:59   beginning. Grew. 14 has already announced plans for a much larger facility with two orders of
0:11:06   magnitude larger capacity Cola acquitted with rse silicon in Moses Lake, Washington Having close
0:11:15   relationships with our customers and strategic partners, we know how important second sourcing is to
0:11:22   meet that need were also planning for a second large scale manufacturing facility.
0:11:34   Having spent out previously from energy to during its purchase by BSF group, Fourteens team has much
0:11:41   experience in taking new materials from the lab to commercial scale and energy to we commercialized
0:11:48   various energy storage carbons for applications spending. Ultra capacitors toe let acid battery
0:11:54   additives. That foundation laid the groundwork for developing SEC 55. We learned that it is critical
0:12:03   to scale along with our customers needs. We all know the future will ring mawr and Mawr
0:12:11   electrification across many industries, creating tremendous demand for energy storage and more
0:12:17   efficient and higher performing batteries.
0:12:23   Therefore, we have specifically designed SEC 55 to scale, along with the projected demand beyond our
0:12:31   commercial launch this quarter, where planning for the launch of our large scale plant co located
0:12:36   with R A. C in 2023 within the decade, we're projecting SEC 55 manufacturing at a scale to fulfill
0:12:46   the need for the electrification of everything.
0:12:51   With that, I conclude my talk. I thank you for your attention, and I look forward to talking with
0:12:58   you in the Q and a session