What is Li-ion battery: Definition and 12 Discussions

A lithium-ion battery or Li-ion battery is a type of rechargeable battery. Lithium-ion batteries are commonly used for portable electronics and electric vehicles and are growing in popularity for military and aerospace applications. A prototype Li-ion battery was developed by Akira Yoshino in 1985, based on earlier research by John Goodenough, M. Stanley Whittingham, Rachid Yazami and Koichi Mizushima during the 1970s–1980s, and then a commercial Li-ion battery was developed by a Sony and Asahi Kasei team led by Yoshio Nishi in 1991.In the batteries, lithium ions move from the negative electrode through an electrolyte to the positive electrode during discharge, and back when charging. Li-ion batteries use an intercalated lithium compound as the material at the positive electrode and typically graphite at the negative electrode. The batteries have a high energy density, no memory effect (other than LFP cells) and low self-discharge. They can however be a safety hazard since they contain flammable electrolytes, and if damaged or incorrectly charged can lead to explosions and fires. Samsung was forced to recall Galaxy Note 7 handsets following lithium-ion fires, and there have been several incidents involving batteries on Boeing 787s.
Chemistry, performance, cost and safety characteristics vary across types of lithium-ion batteries. Handheld electronics mostly use lithium polymer batteries (with a polymer gel as electrolyte), a lithium cobalt oxide (LiCoO2) cathode material, and a graphite anode, which together offer a high energy density. Lithium iron phosphate (LiFePO4), lithium manganese oxide (LiMn2O4 spinel, or Li2MnO3-based lithium rich layered materials (LMR-NMC)), and lithium nickel manganese cobalt oxide (LiNiMnCoO2 or NMC) may offer longer lives and may have better rate capability. Such batteries are widely used for electric tools, medical equipment, and other roles. NMC and its derivatives are widely used in electric vehicles.
Research areas for lithium-ion batteries include extending lifetime, increasing energy density, improving safety, reducing cost, and increasing charging speed, among others. Research has been under way in the area of non-flammable electrolytes as a pathway to increased safety based on the flammability and volatility of the organic solvents used in the typical electrolyte. Strategies include aqueous lithium-ion batteries, ceramic solid electrolytes, polymer electrolytes, ionic liquids, and heavily fluorinated systems.

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  1. T

    Misc. Looking for entry level DIY ideas

    I'm looking for a way to use these batteries that is safe and also useful. I've looked into buy inverters to turn them into portable battery packs but am out of my depth and don't want to create a device with serious potential fire hazards without thoroughly understanding the ins and outs and...
  2. E

    Could you check this Li-ion charging circuit?

    Can secondary cell can be described in circuit simulator?? With other symbols like capacitor. Also I wonder if there's a program that provide secondary cell(like Li-ion battery). Please help me
  3. Rzbs

    Lithium-ion rechargeable batteries

    I want to know how a lithium ion rechargeable cell works with very basics details. I don't need a simple describtion like most of the websites and videos. I need a resource that explain the chemistry and physics of a Li ion cell from very basics of knowledge. Could you please introduce such a...
  4. Stonestreecty

    I How do I know the lithium content of a lithium-ion battery?

    Power bank is common for our daily life, especially for our smart phone, which always a lithium-ion battery. Taking airplane is easy at our daily life, but there are restrictions on lithium content for air travel, thus air travelers ask the question "How much lithium in a battery am I allowed to...
  5. Cool4Kat

    How much current does a cell phone use?

    I am doing a series of videos on the history of electricity and I am working on a video on Volta and the first battery. Anyway, I want to compare the voltaic pile to a typical li-ion battery running my iPhone. Now the voltaic pile could easily create 20 V of potential but it had high...
  6. R

    Just simple question about a li-ion battery in a non-hybrid car

    i just had curiosity when i saw car magazine about http://www.roadandtrack.com/new-cars/videos/a18350/lithium-batteries-not-just-for-hybrids/ What is the first car model using li-ion battery in their starter motor..? Is it Porche's track-oriented models?
  7. S

    Li-ion battery positive electrode attraction

    I don't understant how the positive electrode can attract both electrons and the positive Li ions as they both flow to it. Also, the way to start the whole process is to let the electrons flow, right? (Close the circuit.) Without it, the ions also don't want to start flowing, although there is...
  8. T

    How Does Current Affect Li-Ion Battery Efficiency?

    Hi, I am trying to figure out how Li-Ion batteries operate in regards to efficiency. I understand they have rated voltage and current etc. and to operate them at these parameters if possible. However, I'm wondering is it simply the current that has effect on their efficiency. By Efficiency I...
  9. D

    Minimum amount of power need to charge a li-ion battery

    What is the minimum amount of power needed to charge a small lithium ion battery of 3.4 V and 2100 mAh?
  10. R

    Measuring SoC/life on Li-ion battery - help please

    Hi all, I've been trying to find some sort of multimeter/voltmeter/etc that will allow me to get an accurate (and independent of the handset) read on state of charge, or remaining life, on a standard cell phone li-ion battery. I've found a few voltmeters and the like, but my understanding...
  11. S

    Nanowire Li-ion battery. Is there a sense?

    Recently, there is a new type of battery is developing that has silicon anode which is able to absorb 8 times more Li-ions than graphite anode. http://en.wikipedia.org/wiki/Nanowire_battery" But if I no make mistake the main limitation of Li-ion battery is its cathode, not anode. Usual...
  12. S

    How Does Li-ion Battery Chemistry Work?

    Could somebody give me detailed explanation how Li-ion chemistry works? For example,if Li ions (cathions) just migrate from one host material (such as graphite) to another (such as Cobalt oxide) where are electrons taken from to run in external circuit? In more common type of battery such as...