February 9, 20215 yr Soundwave you are going to be rich https://returntonow.net/2021/01/05/hemp-batteries-are-eight-times-more-powerful-than-lithium-scientists-discover/
February 10, 20215 yr Soundwave you are going to be rich https://returntonow.net/2021/01/05/hemp-batteries-are-eight-times-more-powerful-than-lithium-scientists-discover/ A fire in such a battery is much less likely than in a lithium one, and much less lethal and especially more enjoyable if it does happen.
February 10, 20215 yr Soundwave you are going to be rich https://returntonow.net/2021/01/05/hemp-batteries-are-eight-times-more-powerful-than-lithium-scientists-discover/ someone is under the influence.
February 10, 20215 yr Its a rather meaningless story. What is the energy density per kg and per CM2? What is the expected liefespan? Projected cost per unit? Is mass production feasible? Aside from the mildly amusing cannabis references, we've heard such claims many times before.
February 10, 20215 yr the researchers chose hemp for source of carbon but could have chosen cheaper toilet tissue instead. https://pubs.acs.org/doi/abs/10.1021/nn400731g https://ndownloader.figstatic.com/files/4042141
February 10, 20215 yr Soundwave you are going to be rich https://returntonow.net/2021/01/05/hemp-batteries-are-eight-times-more-powerful-than-lithium-scientists-discover/ Conforms to my rule that over 99% of all battery advance announcements lead nowhere. And why the most widely used large rechargeable battery in the world is still lead acid. .
February 10, 20215 yr This development first surfaced in 2014 and doesn't appear to have progressed very far since: https://www.bbc.co.uk/news/science-environment-28770876
February 10, 20215 yr This development first surfaced in 2014 and doesn't appear to have progressed very far since: https://www.bbc.co.uk/news/science-environment-28770876 because it isn't true.
February 10, 20215 yr Even the BBC report url link for the guy's company at the time (Alta Supercaps !) now goes to a site promoting dodgy New Age Snake Oil Secret Knowledge type products that will change your like blah blah blah. The whole thing stinks (pun partially intended)
August 28, 20214 yr The most curious thing is who thought of stuffing marijuana into the batteries? I believe that not everyone would have thought of such a thing. Someone taking a psychotic drug perhaps ?
August 28, 20214 yr Soundwave you are going to be rich https://returntonow.net/2021/01/05/hemp-batteries-are-eight-times-more-powerful-than-lithium-scientists-discover/ The article mentions as a reference for this idea, Robert Murray Smith - a you tuber who presents as a scientist and obviously has some scientific capability, but appears to be a snake oil salesman monetising his channel by selling bits of stuff to make batteries - and his bits and pieces are not cheap either. I watched a lot of his videos about making batteries and while they are pretty demos, which show power by running tiny motors for a few seconds, they are nothing like as powerful as the worst lithium ion battery you can buy for three pounds. He talks up these 'technologies', but is I think a bullsh|tter, making money out of sales of battery materials. t least three years ago he was supposed to be six weeks or six months from replacing a Renault Twizzie battery with one of his own revolutionary design, but it has never been mentioned since. Just more and more promo stuff for his kits that he sells. Also - this device is not a cell in any conventional sense. It is a super-capacitor. The commercial super capacitors you can buy have a huge problem - they can hardly sustain any current for more than a couple of seconds.
November 30, 20223 yr Plenty of smoke. Their gravimetric density is typically 40wh per kg, pretty useless really. The hemp is just a clickbait. The hemp is cooked at high temperature to get rid of all other chemicals leaving just carbon in a process similar to making coke for steel. The carbon is then used to make capacitors. The work was commendable for its aim of repurposing waste. The same team tried to use banana skin before and succeeded. However, hemp attracts more clicks than banana skin.
November 30, 20223 yr Conforms to my rule that over 99% of all battery advance announcements lead nowhere. And why the most widely used large rechargeable battery in the world is still lead acid. . So it's a case of you can lead a horse to water but a battery must be lead. - EDIT Just leaving this here as copy of message sent to delivery company, so I've a note of it. " From the tracking number i see the parcel was put on your van 08.58am this morning(Thursday 1/12/2022). I've sat in all day, occasionally checking the tracking, and im looking out the window- ground floor right beside where a van would stop. NO VAN VISITED. Approximately 17.50pm i checked the tracking to find an added note - HOUSE-CARD LEFT. I'm sorry but no van stopped and no card was delivered. So where do we go from here now you've put the emphasis on me to arrange delivery ?. Clearly you or your driver rather, has left it too late and couldn't make the scheduled delivery. I don't mind really, I can understand things are busy, delays do happen. But to say a card was dropped off- the implication nobody was home, when it clearly has not,is a falsehood, and completely unacceptable. I am now forced to wait in a second day, for an unspecified amount of time. I leave this with you and await your answer. I would like a specific time. I have a busy schedule on a Friday, which included checking in on an elderly parent, picking up their prescription from a chemist, making them lunch etc. Thank you for your time. Andrew Convery.. Edited December 1, 20223 yr by AndyBike
December 1, 20223 yr What is the danger of this battery if it catches fire? You start giggling and get the munchies. Dancing plague of 1518 https://en.wikipedia.org/wiki/Dancing_plague_of_1518 Batteries linked to hundreds of waste fires The Environmental Services Association says resulting fires cost fire services and waste operators some £158m a year. https://www.bbc.co.uk/news/science-environment-63809620 Edited December 1, 20223 yr by guerney
December 5, 20223 yr What is the danger of this battery if it catches fire? _______________________________ hub420.shop But that's not really what this question is about
December 16, 20223 yr What is the danger of this battery if it catches fire? <iframe src="https://giphy.com/embed/cRBRQf8syLUyY" width="480" height="269" frameBorder="0" class="giphy-embed" allowFullScreen></iframe><p><a href="[MEDIA=giphy]cRBRQf8syLUyY[/MEDIA]">via GIPHY</a></p> Copy Code
December 19, 20223 yr https://www.graco.com/gb/en/in-plant-manufacturing/material-profiles/foam/hb-fuller-ev-protect-4006.html
Join the conversation
You are posting as a guest. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.