What are the benefits of battery technology?
Today’s battery technology is increasing in energy density, especially when looking at lithium-ion batteries. The higher energy dense a battery is, the longer it can remain active and emit a charge. Today’s high-performance lithium-ion batteries offer high voltage, low maintenance requirements, and no ‘memory effect’ (where batteries hold less charge over time) which can impact battery capacity. As battery technology continues to evolve, the result will be batteries that operate longer while charging faster, offering greater benefits to large industry players and consumers alike.
What industries currently benefit from this technology?
Lithium-ion batteries are some of the most popular batteries on the market today, replacing lead acid batteries in many applications. The battery powering your phone, for example, is likely lithium-ion, as is the battery in your laptop or tablet. Lithium-ion batteries are used in aviation, vehicle manufacturing including autonomous vehicles, robotics, wearables and other electrical systems.
How is battery tech development process vital for these industries?
The need for lighter, more powerful batteries is shared amongst numerous industries. As batteries grow smaller, with more energy density packed into each cell, there are greater opportunities for each of these industries to advance. For example, a wearable can stay in action longer without needing to be recharged, while a drone, electric airplane, or autonomous vehicle can travel further on a single charge.
What impact does it have on our lives?
Battery technology improvements impact our lives in positive ways, large and small. It’s easy to overlook the convenience of having small, powerful batteries in our devices, but can you imagine carrying around a phone with a clunky five-pound battery that requires recharging every hour? Smartwatches, fitness trackers, headphones, tablets — they are all powered by battery technology that allows for greater portability and longer use time.
We might notice the impact of battery technology in a greater way when we look at transportation and energy. As technology improves, energy storage costs decline and options like electric vehicles and solar-powered energy become more affordable for the average consumer. Today’s electric vehicles can travel further for less, and better yet, they are no longer something that only the wealthiest people can afford.
Finally, we all benefit from the impact of batteries on clean energy. Reducing fossil fuel reliance and carbon emissions is critical to preserving our climate and environment.
Why is battery tech important for a clean energy future?
Utility-scale batteries are transforming the energy sector, allowing for energy storage to smooth out oversupply and shortages in renewable energy. When solar plants or wind farms generate a lot of energy on a good day, high-quality batteries can store that energy for times when it cannot be actively generated as easily. The more battery storage we have for clean energy, the less reliant we are on conventional energy methods that kick in when demand is high.
What types of batteries besides lithium batteries are currently on the market today?
Alternative battery technology centers largely on zinc carbon and alkaline.
Zinc carbon batteries are generally low cost and come in a variety of sizes. You will typically find them in applications such as radios, toys and instruments. Alkaline batteries are very popular as well, with a moderate cost and generally high performance. There are also magnesium batteries, mercury batteries, and silver-zinc batteries, all of which are less common but used in settings such as medical devices and cameras.
What are the current emerging technologies?
Significant work is focused on the development of the anode of existing lithium-ion batteries to improve performance. Making improvements to the anode could offer opportunities for smaller, more powerful batteries with higher energy density.
What is “technology readiness level” and why is it important?
Technology readiness levels (TRL) are measurements that assess how mature a particular technology is. TRL 1 is the lowest level, in which the technology is in its infancy and mostly in the scientific research phase. TRL 9 is the highest ranking, meaning the technology is operational and ready to produce at scale. The TRL framework ensures a technology is qualified due to regular testing, simulations and demonstrations.
What advanced lithium ion batteries exist on the market today?
Amprius’ silicon anode lithium-ion batteries are a good example of this advanced technology at work. Using a proprietary silicon anode platform, our commercially available batteries offer many benefits over traditional graphite anode batteries, including higher energy density offering increased range.
What is Amprius’ role in the battery development process?
here is surging demand for batteries and enhanced battery technology. We are a leading manufacturer of ultra-high-energy, high-capacity silicon anode lithium-ion batteries. We are constantly working on R&D. Our focus is on silicon nanowire anodes and cells, and we aim to develop scalable production and a unique anode manufacturing process to bring our batteries to the broader UAV and HAPS markets.
Our work builds on research from Stanford University, and we aren’t done advancing technology any time soon! We are always looking at new ways to improve both battery technology and the anode manufacturing processes involved for improved performance and quality, so our industry partners can use them in new applications and markets that might not exist without Amprius’ innovations.
What improvements are involved in the latest battery development process?
We use silicon nanowires to overcome swelling and cracking, a common problem with silicon anodes, and as a better option than graphite anodes. Our batteries offer many benefits, which we’ll outline below.
Higher energy density
Today’s modern batteries have made great strides in energy density, a trend we expect to continue in future battery development process. Such batteries are capable of holding more energy than their earlier counterparts like nickel-cadmium batteries. Our silicon nanowire batteries boast a high content of active silicon material, at 100 percent (actual percentage of silicon is 99.5-99.9%, which is within the range of acceptable purity levels for materials that are considered 100%).
Silicon is one of the best materials for higher energy density, and using silicon for nanowires means that there is nothing to block the flow of current. This enables our nanowire batteries to offer a high ratio of energy to power.
Why is higher energy density important?
A battery with higher energy density can remain active longer in relation to its size. A phone battery has high energy density, which is what ensures the battery is small and lightweight, but is still able to power your device. With energy-dense batteries, one can fit more, and better, batteries into smaller spaces and pack a lot of energy in.
As you can see from this chart below, Amprius’ silicon anode battery offers more flight time, talk time, mission time, and/or driving range. It’s all thanks to high energy density!
Longer lifespan
By using silicon nanowires, Amprius’ batteries overcome cell life issues that previous attempts at silicon anodes suffered from. Instead of cracking and swelling like a conventional silicon anode is prone to do, Amprius’ silicon anode nanowires tolerate cycling well, while storing more lithium than graphite can in the same area. The end result is a battery with a long, useful lifespan, demonstrated in real-world use with multiple organizations and aerospace companies.
Improved safety
An anode that exhibits cracking is, of course, a potential safety concern. Physical damage can cause a thermal runaway, leading to device failure and pressurizing of the battery cell casing. Results can be anything from some smoking to a full battery fire. Amprius’ silicon nanowire anode batteries are designed to reduce the swelling and cracking issues, thanks to the proprietary technology that stabilizes the anode.
Fully charged batteries in less time
Amprius’ nanowire anodes are thinner and lighter than conventional graphite anodes, and the straight path of our nanowires facilitates high electric and ionic conductivity, enabling high power and faster charging.
Reduced levelized cost of energy
Levelized cost of energy is the cost of power produced by renewable energy, over the lifetime of the system. The lower the levelized cost of energy, the more efficient the system is. To calculate the levelized cost of energy, add the capital expenditure (your initial investment), and operating expenditure together then divide that sum by the yield, or the energy your system harvests.
The cost of battery energy storage is trending downward and has been for quite some time, creating a lower levelized cost of energy. The capital cost of a battery system, and its operating costs, are reduced while the yield improves with higher energy density.
Overall cost of lithium-ion batteries
The overall cost of lithium-ion batteries continues to drop, a good sign for electric vehicles according to Bloomberg. Improvements in technology, including adopting low-cost lithium-ion phosphate for cathodes, is driving the decline in overall cost.
While the battery technology industry is not immune to supply chain issues, Bloomberg predicts that battery costs will continue to reduce into 2024, at which point automakers can produce and sell mass-market electric vehicles at the same price point as internal combustion vehicles in certain markets.