Wiki has a good summary of where we are up to with lithium sulphur batteries under "Commercialization".<div>Drexel University had a battery that didn't degrade over 4000 cycles, which was in part a fluke & they were researching why it happened & how they could repeat it.</div><div>Alan<br><div><a id="linkextractor__1685750117300" data-yahoo-extracted-link="true" href="https://en.wikipedia.org/wiki/Lithium%E2%80%93sulfur_battery" class="lEnhancr_1685750118545">Lithium–sulfur battery - Wikipedia</a><div id="lEnhancr_1685750118545" class="yahoo-link-enhancr-card yahoo-link-enhancr-cardSize-medium yahoo-link-enhancr-cardType-yenhancr yahoo-link-enhancr-cardCategory- ymail-preserve-class ymail-preserve-style" style="max-width: 400px; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; position: relative;" contenteditable="false" data-url="https://en.wikipedia.org/wiki/Lithium%E2%80%93sulfur_battery" data-type="LINK_ENHANCR_ATTACHMENT_TYPE_INLINE" data-category="" data-embed-url="" data-size="medium">
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<h2 class="card-title" style="font-size: 16px; line-height:19px; margin:0 0 4px 0;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;">Lithium–sulfur battery - Wikipedia</h2>
<p class="card-description" style="font-size:11px;line-height:15px;color:#999;">Lithium–sulfur batteries may displace lithium-ion cells because of their higher energy density and reduced cost. This is due to the use of sulfur instead of cobalt, a common element in lithium-ion batteries.[4] Li–S batteries offer specific energies</p>
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</div></div><div><br><br><div id="ymail_android_signature"><a id="ymail_android_signature_link" href="https://mail.onelink.me/107872968?pid=nativeplacement&c=Global_Acquisition_YMktg_315_Internal_EmailSignature&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000604&af_sub5=EmailSignature__Static_">Sent from Yahoo Mail on Android</a></div> <br> <blockquote style="margin: 0 0 20px 0;"> <div style="font-family:Roboto, sans-serif; color:#6D00F6;"> <div>On Sat, 3 Jun 2023 at 11:38 am, Jon Wallace via Personal_Submersibles</div><div><personal_submersibles@psubs.org> wrote:</div> </div> <div style="padding: 10px 0 0 20px; margin: 10px 0 0 0; border-left: 1px solid #6D00F6;"> _______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> </div> </blockquote></div></div>