Whatever is here, can be found elsewhere. What is not here, is not worth knowing.*
Monday, March 28, 2011
To be, or not to be (green), that is the question
Saturday, July 31, 2010
How do we make the Volt cheaper?
Two quick notes on things that happened this week. The first represents the present; the second (hopefully) the future.
Chevy Volt pricing:
Its $41,000. No surprise there. There is a tax rebate that gets this down to $33,500. The leasing option seems cheaper, but seems limited to 12,000 miles a year. I drive 18,000 a year and I rent (which means no charging at home for me). I will not be in line for one anytime soon.
The Nissan Leaf is $33,000 before rebates and $25,500 after. This seems so much more manageable, but its only a 100 miles range. You win some, you lose some. What we need is a cheaper battery.
Which leads me to…
A discussion of the future of the battery:
Those who follow this blog know that most of us at LBNL work as part of a large program called the Batteries For Advanced Transportation Technologies. The Program is funded by the US DOE and has researchers from all over North America. It’s the top battery people from Universities, National Labs, and companies. The team reads like the who’s who of the battery world. The goal of the Program is to perform the research needed to discover and make the next-generation batteries.
This week on Tuesday, all of us met for a day at LBNL to discuss the future of batteries. We discussed ways to make higher energy, lower-cost materials, methods to make the battery last longer, and the challenges with moving to new batteries that promise significantly higher energy density compared to today’s batteries. Below is a photograph that we took at lunch.
Sunday, July 25, 2010
If you build it, will they come?
Many of you have probably come across the piece by Andy Grove titled “How to Make an American Job Before It's Too Late” that was published in Bloomberg. In the article, the former president of Intel argues that losing low-end commodity jobs from the US is a long-term problem. He uses batteries as an example.
In the battery space, all manufacturing of lithium-ion batteries happens in China, Korea, and Japan. Since the mid 90’s when it was becoming clear that lithium-ion was going to be a dominant force in the rechargeable battery market, several US companies have tried to enter the market by setting up plants in the US. None made it big. Some went under; others went back to their core business; still others survived (and continue to do so) on small government projects.
An article written by Ralph Brodd examines this issue in detail. The article is a bit dated, but is interesting reading. Ralph concludes that there are many complicated factors that come into play. Some of these involve the difficulty in penetrating OEM markets (that were all in Japan) for US companies and the fact that lower profit margins were sustainable in East Asia. Interesting he also notes that labor costs are not as significant in this “outsourcing” trend as some claim. I suppose if you automate you can depend on robots not to ask for a minimal wage irrespective of the geography!
Long story short, by the turn of the century, the battery community had accepted the fact that there was no real Li-ion manufacturing in the US. However, most of the community also believed that innovation in batteries happens in the US, and manufacturing (read “low end jobs”) was dominated by Asia.
There are very good reasons to believe that. The materials that power your laptop and cell phone batteries were discovered in the US. Some of the materials that may end up powering your plug-in hybrids and your electric cars were discovered in the US. Ergo... the US leads in the “high value” innovation; Asia does all the “low end” manufacturing.
Andy Grove had come to LBNL last Fall and during a discussion on battery research, he asked what the rest of the world was doing. I answered (echoing the popular belief) to the effect that Asia (read China, but also Korea and Japan) leads manufacturing and the US leads innovation. He cautioned that this was exactly what the semiconductor folks thought, but in time, they started to realize that Asia was starting to do more than just low-end stuff. And he cautioned that the realization might come too late.
What he was talking about was already happening in batteries; it’s just that I was not paying attention. Japan was always a powerhouse in battery R&D (with the Korean’s not far behind), but the last few years are showing that the Chinese are doing just fine, thank you. The number of papers coming from China is increasing and there is a lot more research activity than even a decade ago.
In effect, it is possible to outsource not just “low-end” jobs, but even “high value” R&D. Certainly the last decade has shown that industries ranging from software to pharma are outsourcing their research to China and India.
One could argue that quantity does not imply quality, and impact of papers from the US tends to high compared to most of the world, especially the developing world. But I would argue that as each year goes by, you can expect to see the quality and the impact improve. With money comes equipment, personnel to hire, ability to travel to conferences, and the ability to collaborate with the best and the brightest the world over. And despite the recession, China has continued to grow. If you are looking for money, China is the place to be.
If the manufacturing is in Asia, the talent is in Asia, and the funding is in Asia one can logically assume that future breakthroughs will happen in Asia.
The question then becomes: How does the US get back on the driver seat?
The US DOE decided that one way to do that was to bootstrap the development of a battery industry in the US by providing stimulus money to build factories. A few different companies got funded as part of this effort. These companies will be ramping up manufacturing of vehicle batteries in the coming years and slowly but steadily, the US will ramp up battery manufacturing for next-gen cars. Over the last week, the government issued a report on the impact of all this funding and their expectation of battery performance and cost over the next 5 years. The report, predictably, paints a rather optimistic future.
However, there a couple of problems to worry about. For one, the batteries that are being made have to be sold (Sounds obvious, but I think its worth reminding ourselves of this). For this to happen, there has to be a market for plug-in and electric cars. And as we pointed out these cars will be expensive because of the battery cost. Mass manufacturing will decrease the cost, but for mass manufacturing you need someone to buy these batteries and so you have a chicken and egg problem. And even the decreased cost will still make these cars expensive.
Moreover, most (if not all) of these companies are essentially using the money to build a building, and buying equipment from China, Japan, and Korea to make batteries pretty much exactly as they have been made in Asia except that they are doing it on US soil. Even the chemistry for the anode, cathode, and electrolyte that are being used for are not really unique.
Its not clear is there will be any unique intellectual property that will come out of this. Maybe in time, IP will come, but in the short term there will be little that is different from the batteries made in Asia. These will be expensive batteries with no clear technology advantage over the Asian rivals, but made in the US of A.
But the funding will create jobs, reduce battery costs, allow us to start the process of innovation and IP generation, and provide a pathway for the wonderful research in the Universities and National Labs to reach the marketplace. In the long run, all this can only help.
But in the short run, it is not clear which markets these companies will sell their batteries to and how they will stay in business long enough for all these benefits to occur. I believe that a vibrant PHEV or EV marketplace is key, but it’s not clear how one should enable this. None of the solutions are easy (e.g., a gas tax). But does appear that without incentives, it will hard to jumpstart an electric economy. We may be forced to make these hard choices.
This would be the “If you build it, they will come” route.
Instead of going this route, one could try to do something radically different; generate IP; use this IP to manufacture in the US, and leapfrog Asia. Leapfrogging in batteries is not easy (I suppose by its very definition leapfrogging is not easy!) and as I have noted, Moore’s law is like Murphy’s law for battery folks (we cringe at the mention of both). But one can imagine a new material or a new way of assembling a battery coming along that makes the existing methods obsolete and makes the US the leader in manufacturing as well as research.
There are a few governmental programs that are aiming to do just that. And certainly the whole of Sand Hill Road (which would be the street in Menlo Park that houses many of the Venture Capital firms in the SF Bay Area) is looking to see if they can find the next big startup with the winning idea. Only time will tell if the numerous startups and projects that are attempting to do something radical will end up being truly disruptive. And as I mentioned in my post on David vs. Goliath (or Tesla vs. Toyota), succeeding in the battery space can be hard.
In the meantime, all of you can do your part to keep the battery economy moving. Pay the $40K or $100K (depending on your affordability) and buy a Chevy Volt or a Tesla Roadster. This may mean selling your home, but, as the last few years has taught us, home ownership is overrated anyway.
Venkat
Wednesday, February 10, 2010
Should I get ready to buy a plug-in hybrid?
I work in Berkeley, CA, the tree-hugging, vegan-eating, Toyota Prius-driving, environmental sensitivity capital of the world. I live in Fremont, CA. This means I must drive 35 miles each way to work. Yes, you read that correctly—I drive 35 miles each way.
Every time I hear about a plug-in electric hybrid vehicle (PHEV) capable of providing 40 miles of driving on its battery before the combustion engine kicks in, I salivate at the prospect of not having to apologize to all the classic “Berkeley-types” for my gas-guzzling lifestyle. So, am I going to be first in line buying a Chevy Volt? I don’t think so and here’s why: it will be expensive!
Other thing you learn when you are around Berkeley a lot is that nearly everyone has seen the documentary “Who killed the electric car?” and believes that Detroit can easily make cheap PHEVs, but they don’t want to because of [insert favorite conspiracy here]. I shall steer clear from any such controversy and stick to some numbers for costs of batteries, and leave you to come to your own conclusions. (I shall conveniently sidestep the fact that battery costs themselves are controversial!)
Most people agree that for transportation applications, Lithium-ion batteries are the best option (more on this in a later post). Laptop Li-ion batteries cost ~$200 per kilowatt-hour (kWh), the most common measure of battery performance. This is for a single battery cell. We have to take a bunch of these cells to make a vehicle battery pack. Estimates suggest that the pack costs will be ~$450/kWh. Remember, these are laptop batteries, and if your laptop is anything like mine, this battery will last two years or less! But, let’s be optimistic and say that a PHEV battery will last four years.
To drive 40 miles on the battery pack, you need 16 kWh (give or take). This means you have to buy a battery pack for the car costing about $7,200 (16 times 450). And you still need to buy the engine, brakes, steering, seats…you get the point. And every four years, at least, you will be visiting the dealership, waiting to change the battery and shelling out another $7,200. I wonder how many Berkeley-types will be willing, or able, to do this.
Now, the batteries that General Motors will use will be much better than laptop batteries and will last a lot longer. But this also means that they will cost more. Now we start to delve into the unknown, but experts say that batteries capable of meeting the long-life requirement cost ~$1,000/kWh today. Given that, the same 40-mile battery will cost a whopping $16,000! Add on the cost of the car (~$25,000) and you get a ~$40,000 PHEV. News reports suggest that, indeed, GM is planning of a $40,000 launch for the Volt (note that government subsidies will get this cost down a bit, atleast for the early adopters). There is no way I can afford a $40,000 car with my LBL job (I will try this argument on my performance appraisal and see if I can get a pay hike). So no Volt for me.
But here is the optimistic part. Experts also think that with mass manufacturing, it will be possible to reduce the costs of these long-life batteries to be on par with laptop batteries. Which means that we can expect to see the costs coming down to, say $8,000 per PHEV pack in the future. This would lower the cost of the car to about $33,000—still expensive, but closer to what I would be willing to pay. And remember that these cars will cost less to run (electricity is cheaper than gas) and, hopefully, cheaper to maintain (less wear and tear).
But to really have a big impact, especially in getting widespread penetration in countries with large emerging economies such as India, these costs have to come down significantly, maybe by as much as a factor of two or more. And if we want to ever get to a pure electric vehicle, we will need a lot more energy (55 kWh instead of 16 kWh) and these costs have to come way down for these cars to be widely affordable. Fundamental research into battery energy, safety, and lifetimes are the only way we are going to achieve this. More on this in future posts.
What does this all mean? There is a PHEV in my future. What I don’t know is how far in the future! In the mean time, I will continue to come up with new excuses for why I need to drive, and not take pubic transportation or move. If you have any smart suggestions, let me know.