https://www.nature.com/articles/s42004-022-00626-2.pdf
A summary by a HackerNews user:
Full noscript: "Stabilization of gamma sulfur at room temperature to enable the use of carbonate electrolyte in Li-S batteries". The paper is from February, but it doesn't seem to have been posted before. TLDR is that with just a new anode made from carbon nanofibers and sulfur, batteries otherwise almost identical to existing Li-Ion batteries would have 2-5 times the energy density, last 3 times as long, and cost 1/3 or less, and be more environmentally benign (not needing cobalt). The breakthrough here is the discovery that carbon nanofibers stabilize gamma-phase sulfur which previously was thought to only exist briefly at high temperatures, and which doesn't form the polysulfides that have been the main problem with Li-S batteries.
Yeah, there have been lots of "breakthrough battery tech" announcements that didn't lead to commercial products, but this one really looks like it may be just the leap forward that will make renewable energy storage a non-problem.
A summary by a HackerNews user:
Full noscript: "Stabilization of gamma sulfur at room temperature to enable the use of carbonate electrolyte in Li-S batteries". The paper is from February, but it doesn't seem to have been posted before. TLDR is that with just a new anode made from carbon nanofibers and sulfur, batteries otherwise almost identical to existing Li-Ion batteries would have 2-5 times the energy density, last 3 times as long, and cost 1/3 or less, and be more environmentally benign (not needing cobalt). The breakthrough here is the discovery that carbon nanofibers stabilize gamma-phase sulfur which previously was thought to only exist briefly at high temperatures, and which doesn't form the polysulfides that have been the main problem with Li-S batteries.
Yeah, there have been lots of "breakthrough battery tech" announcements that didn't lead to commercial products, but this one really looks like it may be just the leap forward that will make renewable energy storage a non-problem.
A comparison on COVID cases in Hong Kong vs South Korea and types of vaccines used reveals interesting results:
https://www.economist.com/graphic-detail/2022/04/09/asias-outbreaks-show-that-omicron-is-deadly-in-unvaccinated-people
you can use this link to bypass paywall:
https://archive.ph/bhswH
If the link does not open for you, in Firefox goto Settings > Network Settings > Check Enable DNS over Https > Keep the default option in DropDown list
https://www.economist.com/graphic-detail/2022/04/09/asias-outbreaks-show-that-omicron-is-deadly-in-unvaccinated-people
you can use this link to bypass paywall:
https://archive.ph/bhswH
If the link does not open for you, in Firefox goto Settings > Network Settings > Check Enable DNS over Https > Keep the default option in DropDown list
The Economist
Asia’s outbreaks show that Omicron is deadly in unvaccinated people
Covid has never spread faster than in recent surges in Hong Kong and South Korea
#programming
A very interesting report from Slack Engineering. Very informative for backend engineers and SREs.
https://slack.engineering/slacks-incident-on-2-22-22/
A very interesting report from Slack Engineering. Very informative for backend engineers and SREs.
https://slack.engineering/slacks-incident-on-2-22-22/
slack.engineering
Slack’s Incident on 2-22-22
By Laura Nolan, with contributions from Glen D. Sanford, Jamie Scheinblum, and Chris Sullivan. Assessing conditions Slack experienced a major incident on February 22 this year, during which time many users were unable to connect to Slack, including the author…