“Water-in-salt” (WIS) electrolytes using super-concentrated organic lithium (Li) salts are attracting tremendous interest for high energy aqueous Li-ion batteries, owing to their wide electrochemical stability window that enables the application of high-energy electrode couples. However, the high salt cost, high viscosity, poor wettability and environmental hazards remain a great challenge. Herein, we present a “localized water-in-salt” (LWIS) electrolyte based on low-cost lithium nitrate (LiNO 3 ) salt and 1,5-pentanediol (PD) as inert diluent. The addition of PD not only maintains the solvation structure of the WIS electrolyte and improves the electrolyte stability via hydrogen-bonding interactions with water and NO 3 - molecules, but also dramatically reduces the total salt concentration. Furthermore, by in-situ gelling the LWIS electrolyte with tetraethylene glycol diacrylate (TEGDA) monomer, the electrolyte stability window can be further expanded to 3.0 V. The as-developed Mo 6 S 8 |LWIS gel electrolyte|LiMn 2 O 4 (LMO) batteries delivered outstanding cycling performance with a Coulombic efficiency of 98.53 % at after 250 cycles at 1 C.

https://ift.tt/3jtGzQK

Zn dendrite issue was intensively studied via tuning zinc ion flux. pH change seriously influences dendrite formation, while its importance has not been revealed. Here, we construct a N-modification graphdiyne interface (NGI) to stabilize pH by mediating hydrated zinc ion desolvation. Operando pH detection reveals pH stabilization by NGI. This works with pores in NGI to achieve dendrite-free Zn deposition and an increased symmetric cell lifespan by 116 times. Experimental and theoretical results owe pH stabilization to desolvation with a reduced activation energy achieved by electron transfer from solvation sheath to N atom. The efficient desolvation ensures that electron directly transfers from substrate to Zn2+ (rather than the coordinated H2O), avoiding O-H bond splitting. Hence, Zn-V6O13 battery achieves a long lifespan at 20.65 mA cm-2 and 1.07 mAh cm-2. This work reveals the significance of interface pH and provides a new approach to address Zn dendrite issue.

https://ift.tt/3xaO57U

Not directly personal finance related, but the CRT class action posts from a couple years ago were allowed, and $20 is $20.

If you purchased a device with a rechargeable lithium ion battery between 2000–2012, you're likely eligible to file a claim. If you don't have a receipt you can still be eligible for a $20 settlement. Deadline is December 17th.

https://www.batteriessettlement.ca/

Greetings fellow autists.

I’ve been meaning to give back to this community from which I’ve benefitted a lot since its founding, and decided to do a write-up on the modern EV Battery and Grid Storage sectors. I also wanted to do one for Magnis Energy Technology’s projects (MNS) and where it strategically fits in this high growth but very complex sector, so I combined the two DDs into what you have here.

While I do hold MNS stocks, and I WILL address the current Murdoch media/Twitter/HC campaign against MNS, this post will first and foremost be to help understand the global EV Battery sector and related sub-industries/downstream markets.

Then using this as a framework, I’ll share my own DD on MNS, their projects/holdings, and whether it is a good or risky investment choice within the sector & in the current ASX/media climate. Anything I couldn't fit in 40k characters will go into a FAQ comment.

But tl;dr for those just wanting a quick answer, I am holding firm, with a SP target of ~$2.15 by June 2022 depending on MANY factors.

Table of Contents

1 - Lithium Ion Batteries 101

Batteries are a way of storing electrical energy that can be collected at any point in time, then discharged for consumption at any other point in time, and due to its relative technological maturity and long lifespan, the overwhelming majority of passenger electric vehicles (PEVs) made in commercial quantities today use Lithium-ion Batteries as their energy solution.

1.1 How does a lithium-ion battery work?

A modern Lithium-ion Battery (or LiB), co-invented in the 1970s by Nobel Laureates Professor M. Stanley Whittingham, John Goodenough, and Akira Yoshino, is made up of 5 key aspects: the Cathode, Anode, Electrolyte, Separator and a Cell form factor. The way these batteries discharges or recharges electrical energy is by transferring electrically charged atoms (the ions) between the cathode material and the anode material through the electrolyte medium. The lithium part of LiBs sits in the anode.

See diagram below for high level illustration.

Key components of a Lithium-ion Battery

1.2 What exactly is inside your LiBs (Battery Cell Chemistry)?

There are a large

Someone talk me off the ledge

Edit I’m not in dire need of a car right now

Edit 2: Update: I’m taking delivery. I don’t think it’ll be too much of a difference (yes I have seen the videos of the processors side by side). I read they will likely offer retrofit for a fee in the future. If I’m THAT unhappy with my brand new 2022 Tesla model 3 all wheel drive long range, i’ll think about it. All in all, I’m getting a badass car and I’m hype. Thanks for all inputs, those who agreed and disagreed.

I got it about 3.5 years ago. I have messed up by always keeping it plugged in, even during the nights. It has barely been used without power. Recently I needed to use it without being plugged in and I saw just how unreliable it is without power. The battery is non removable (without opening it up).

Is there any way to increase its juice? Even if it's 10% more I'd appreciate it.

Specifically for this bike I just purchased - the 29' Gotrax Traveler. It's normally $1,100 but it's on sale for $650 at Walmart (and since it's Walmart I nabbed a 4 year warranty ayo).

So onto the relevant specs, the motor's 500 watts, the controller is super simplistic and doesn't even come with a display (lack of info on it), with a no brand name 48v 10ah lithium ion battery that I want to have a backup / upgrade for. I just don't want the spare alone to have to be connected by loose cables or be mismatched & useless before I even receive it. Gotrax doesn't sell spare batteries and my investigation into Ebike batteries led to some interesting discoveries, but many more questions and concerns... Like why are some of the batteries online over $500? At that rate I'd just buy a second one of these bikes lmao. If somebody more knowledgeable could point me in the right direction I would seriously appreciate it. Thanks!

I have an antigravity lithium ion battery in my bike. Can I use it, with regular jumper cables, to jump start another vehicle that has a dead battery? Or will this damage my battery?

EDIT: I'm specifically asking because of the lithium battery, will it take any damage connecting to a lead acid battery?