新未名空间

pathdream 写了： 2024年 12月 13日 18:24 5百亿英里电池要来了

ignius 写了： 2024年 12月 13日 16:12 A new type of lithium-ion battery with a single crystal electrode can withstand over 20,000 charge-discharge cycles before hitting the 80 percent capacity cutoff.

Researchers at Dalhousie University studied the battery using an ultrabright synchrotron after it underwent continuous testing for six years. If it were fitted onto an electric vehicle (EV), this would roughly translate to a distance traveled of nearly five million miles (eight million km).

Funded by Tesla Canada and the Natural Sciences and Engineering Research Council (NSERC), researchers at Dalhousie University studied two types of lithium-ion batteries, one with a regular electrode and the other with a single crystal electrode under the ultrabright synchrotron light at CLS.

“The great thing about doing this kind of measurement at a synchrotron is we can actually look at this at a microscopic level without having to take the cell apart,” said Toby Bond, senior scientist at CLS, in a press release.

Inside a regular battery, lithium forces atoms of the electrode material to expand and contract, leading to microscopic cracking. “Eventually, there were so many cracks that the electrode was essentially pulverized,” added Bond.

However, the battery with a single crystal electrode showed no such signs. Instead, the researchers could not distinguish between a new cell and a six-year-old one.

https://interestingengineering.com/ener ... lion-miles

https://www.yahoo.com/news/5-million-mi ... 19061.html

ignius 写了： 2024年 12月 13日 18:12 你肯定没有读原文

geniushanbiao 写了： 2024年 12月 13日 19:15 读了半天，和没读没啥区别。这种文章见多了去了，lab里面做出点东西拿出来发个paper，实际上离应用还差十万八千里。

digitneer 写了： 2024年 12月 13日 19:18 去年MIT还出1纳米光刻技术呢。这么NB，现在美国肯定看不上台积电了吧。
实验室里的技术，没应用就拿出来吹，和放卫星有什么区别？

ignius 写了： 2024年 12月 13日 20:13 人家整整花了6年时间，经过了成千上百次的实验验证，才拿出的结果。而且这是tesla为了造出百万英里的锂电池直接投资搞出来的成果，2020年就拿了patent。拭目以待吧，应该可以很快商业化。

ignius 写了： 2024年 12月 13日 20:11井底之蛙

牛河梁 写了： 2024年 12月 13日 20:15 现在出厂的LR铁丝电池100万迈应该没问题。

geniushanbiao 写了： 2024年 12月 13日 20:17 特么我自己就是搞科研的你以为我不知道这里面的道道？

ignius 写了： 2024年 12月 13日 20:17 电机没问题，电池的充放cycle还只是1000-2000次吧？

zyyj2021 写了： 2024年 12月 14日 03:00 那现在，更不能买电池车了。

等 “5百万英里电池” 出来了，再说。

没做出来的，都是PPT忽悠人的，都是假的。

ignius 写了： 2024年 12月 13日 16:12 A new type of lithium-ion battery with a single crystal electrode can withstand over 20,000 charge-discharge cycles before hitting the 80 percent capacity cutoff.

Researchers at Dalhousie University studied the battery using an ultrabright synchrotron after it underwent continuous testing for six years. If it were fitted onto an electric vehicle (EV), this would roughly translate to a distance traveled of nearly five million miles (eight million km).

Funded by Tesla Canada and the Natural Sciences and Engineering Research Council (NSERC), researchers at Dalhousie University studied two types of lithium-ion batteries, one with a regular electrode and the other with a single crystal electrode under the ultrabright synchrotron light at CLS.

“The great thing about doing this kind of measurement at a synchrotron is we can actually look at this at a microscopic level without having to take the cell apart,” said Toby Bond, senior scientist at CLS, in a press release.

Inside a regular battery, lithium forces atoms of the electrode material to expand and contract, leading to microscopic cracking. “Eventually, there were so many cracks that the electrode was essentially pulverized,” added Bond.

However, the battery with a single crystal electrode showed no such signs. Instead, the researchers could not distinguish between a new cell and a six-year-old one.

https://interestingengineering.com/ener ... lion-miles

https://www.yahoo.com/news/5-million-mi ... 19061.html

QFT 写了： 2024年 12月 14日 09:24 这要真的，难道不该是：1.申请专利；2.做出产品？

发布一个新闻说If it were fitted onto an electric vehicle (EV), this would roughly translate to a distance traveled of nearly five million miles (eight million km).

属于特么怎么回事

ignius 写了： 2024年 12月 13日 20:17 所以说你是井底之蛙呢

geniushanbiao 写了： 2024年 12月 14日 11:48 真正的井底之蛙才会对没做出来的东西趋之若鹜。

ignius 写了： 2024年 12月 14日 11:51鹦鹉学舌