New Battery Technology Might Make Solar Power More Practical


I ran across an item last night about a new kind of battery that might be a breakthrough in the knotty puzzle of storing solar power during the day for use at night:

“Now we have a good chance of solving that problem,” says Michael Aziz, a materials scientist at Harvard University in Cambridge, Massachusetts. His solution is a flow battery that packs a high energy density with no need for the expensive metals found in other models.

….The most advanced commercial flow batteries rely on vanadium ions….“The problem is, vanadium is really expensive,” says Aziz….Over the past few decades, researchers have investigated many other chemical systems, and ruled all but a handful out. “The periodic table has been pretty well picked over,” says Aziz. “So we’ve introduced the world of organic chemistry to this problem.”

His battery’s anode uses a solution of sulphuric acid containing a type of organic compound known as a quinone. The quinone is cheap and needs no catalytic urging to react with protons to form a higher-energy hydroquinone, thereby charging the battery. Aziz teamed this half of the flow battery with a well-known partner: a cathode that alternates between bromine and hydrobromic acid.

How about that? Back in 1977, Mike and I played tennis together at Caltech. Now he’s saving the world with applied physics and I’m, uh, I’m….

Right. Enough about that. Anyway, if it works out, we’ll all have 500-gallon tanks of quinones buried in our yards someday to store the power from the solar cells on our roofs. Cool.

HERE ARE THE FACTS:

Our fall fundraising drive is off to a rough start, and we very much need to raise $250,000 in the next couple of weeks. If you value the journalism you get from Mother Jones, please help us do it with a donation today.

As we wrote over the summer, traffic has been down at Mother Jones and a lot of sites with many people thinking news is less important now that Donald Trump is no longer president. But if you're reading this, you're not one of those people, and we're hoping we can rally support from folks like you who really get why our reporting matters right now. And that's how it's always worked: For 45 years now, a relatively small group of readers (compared to everyone we reach) who pitch in from time to time has allowed Mother Jones to do the type of journalism the moment demands and keep it free for everyone else.

Please pitch in with a donation during our fall fundraising drive if you can. We can't afford to come up short, and there's still a long way to go by November 5.

payment methods

ONE MORE QUICK THING:

Our fall fundraising drive is off to a rough start, and we very much need to raise $250,000 in the next couple of weeks. If you value the journalism you get from Mother Jones, please help us do it with a donation today.

As we wrote over the summer, traffic has been down at Mother Jones and a lot of sites with many people thinking news is less important now that Donald Trump is no longer president. But if you're reading this, you're not one of those people, and we're hoping we can rally support from folks like you who really get why our reporting matters right now. And that's how it's always worked: For 45 years now, a relatively small group of readers (compared to everyone we reach) who pitch in from time to time has allowed Mother Jones to do the type of journalism the moment demands and keep it free for everyone else.

Please pitch in with a donation during our fall fundraising drive if you can. We can't afford to come up short, and there's still a long way to go by November 5.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate