1801: Alessandro Volta presents his invention — the battery — to Napoleon. Photo: Hulton Archive/Getty.

One of the most confounding areas of research is the battery, a technology that, while invented more than two centuries ago, is still frustrating scientists. But amid robust electric-car competition pitting the U.S. against Germany, China and other nations, researchers say their hopes are growing for a breakthrough.

Driving the news: One of the companies that has attracted much attention is Sila Nanotechnologies, an Alameda, Calif., startup that claims to have figured out how to build a working silicon anode, one of the two electrodes that make lithium-ion batteries work.

Why it matters: A breakthrough using silicon would pack much more energy than the standard graphite anode. The problem with silicon, however, is that it expands dramatically in use, shattering the battery.

What they did: Sila says it has solved this problem and raised battery performance by 20% over current commercial rivals.

  • Gene Berdichevsky, Sila's CEO, tells Axios that the company's anodes still swell, but that the structure of the electrode absorbs most of the expansion.
  • "We solve this by compensating for it in the particle structure (creating room for its expansion correctly)," he says.

What's next: The anode will undergo its first commercial test in consumer devices next year, Berdichevsky adds.

Be smart: A significantly better battery is still years ahead. Even companies such as Sila that claim to have resolved a fundamental technical roadblock say they will need to try out their batteries first in small devices, not electric cars.

A further reason for caution: The most-discussed startups, including Sila, aren't fully revealing the data behind their claims. In the past, this was a red flag for batteries that were more ideas than commercial breakthroughs.

Go deeper

Updated 3 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Eniola Odetunde/Axios

  1. Global: Total confirmed cases as of 10 p.m. ET: 12,009,301 — Total deaths: 548,799 — Total recoveries — 6,561,969Map.
  2. U.S.: Total confirmed cases as of 10 p.m. ET: 3,053,328 — Total deaths: 132,256 — Total recoveries: 953,420 — Total tested: 37,532,612Map.
  3. Public health: Houston mayor cancels Republican convention over coronavirus concerns Deaths are rising in hotspots — Déjà vu sets in as testing issues rise and PPE dwindles.
  4. Travel: United warns employees it may furlough 45% of U.S. workforce How the pandemic changed mobility habits, by state.
  5. Education: New York City schools will not fully reopen in fallHarvard and MIT sue Trump administration over rule barring foreign students from online classes.
  6. 🎧 Podcast: A misinformation "infodemic" is here.

Transcripts show George Floyd told police "I can't breathe" over 20 times

Photo: Gary Coronado/Los Angeles Times via Getty Images

Newly released transcripts of bodycam footage from the Minneapolis Police Department show that George Floyd told officers he could not breathe more than 20 times in the moments leading up to his death.

Why it matters: Floyd's killing sparked a national wave of Black Lives Matter protests and an ongoing reckoning over systemic racism in the United States. The transcripts "offer one the most thorough and dramatic accounts" before Floyd's death, The New York Times writes.

7 hours ago - Health

Fighting the coronavirus infodemic

Illustration: Sarah Grillo/Axios

An "infodemic" of misinformation and disinformation has helped cripple the response to the novel coronavirus.

Why it matters: High-powered social media accelerates the spread of lies and political polarization that motivates people to believe them. Unless the public health sphere can effectively counter misinformation, not even an effective vaccine may be enough to end the pandemic.