Tech & Science : Li-ion batteries: Science 'directly into your hand' - - PressFrom - Australia
  •   
  •   

Tech & Science Li-ion batteries: Science 'directly into your hand'

12:52  10 october  2019
12:52  10 october  2019 Source:   msn.com

Thunberg theatre is more ‘politics than science’

  Thunberg theatre is more ‘politics than science’ The Australian’s Graham Lloyd says the public is witnessing “the politics rather than the science” in relation to Greta Thunberg’s recent impassioned climate change addresses. Speaking with Sky News host Chris Kenny, Mr Lloyd said the response to the Swedish activist's United Nations speech has “been quite extraordinary.""In a lot of ways Thunberg is really delivering on what a lot of people have been looking for, for a long period of time."“I think she has got a very simple message and she cuts through but unfortunately in this area there is often a wide gulf between the science and the politics,” he said.

Lithium - ion batteries have also reduced our reliance on planet-warming fossil fuels, especially in electric cars. Furthermore, they can be used in combination with renewable "The practical application of science for the benefit of humanity; fundamental science placed directly into your hand ," he said.

Lithium - ion batteries are good choices for all types of electronic devices, from laptops to Lithium - ion batteries , also known as Li -on batteries , are rechargeable batteries "The practical application of science for the benefit of humanity; fundamental science placed directly into your hand ," he said.

a car engine: Lithium-ion batteries have helped reduce our reliance on planet-warming fossil fuels, especially in electric cars.© AFP PHOTO / TOSHIFUMI KITAMURA Lithium-ion batteries have helped reduce our reliance on planet-warming fossil fuels, especially in electric cars.

They are omnipresent and essential to navigating modern life. Small, light, rechargeable: lithium ion batteries have revolutionised our world in less than three decades.

On Wednesday, John Goodenough, Stanley Whittingham and Akira Yoshino, the inventors of a technology taken for granted by most, got the most prestigious chemistry nod of all: a Nobel Prize.

"They created a rechargeable world," stated the Royal Swedish Academy of Sciences, which awards the accolade.

Microsoft gets serious with latest wireless headphones, the Surface Buds

  Microsoft gets serious with latest wireless headphones, the Surface Buds At last year's Surface event, Microsoft announced the over-ear noise-cancelling Surface Headphones; this year, the company more directly entered the competition against Apple's segment-leading AirPods with the introduction of the Surface Buds. On Wednesday at the 2019 Surface Event, Microsoft announced its first truly wireless pair of earbuds, aptly named the Surface Buds. require(["inlineoutstreamAd", "c.

Lithium - ion batteries have also reduced our reliance on planet-warming fossil fuels, especially in electric cars. Furthermore, they can be used in combination with renewable "The practical application of science for the benefit of humanity; fundamental science placed directly into your hand ," he said.

Why do my Li - ion Batteries have issues? How to prevent over-discharge on li - ion batteries . As mentioned above, over discharge happens when you push your batteries to their absolute limits, to the point where it doesn’t have enough power Do not fall into the trap of doing that with Li - ion batteries !

- What's the big deal? -

Only commercialised in 1991, lithium ion batteries now power millions upon millions of cellphones, laptops, tablets, cameras, hearing aids, pacemakers, solar panels, scooters, bikes and even long-distance electric cars.

"Over two thirds of the world's population own a mobile device be it a smartphone, a laptop or tablet, and nearly all powered by rechargeable lithium-ion batteries. They are the hidden workhorses of the mobile era," Paul Coxon of the University of Cambridge's Department of Materials Science and Metallurgy told AFP.

They have considerably boosted human mobility, and allowed millions in developing countries to access information and services online with just a mobile phone.

Lithium-ion batteries have also reduced our reliance on planet-warming fossil fuels, especially in electric cars.

"Working against time": 27 schools air conditioned, another 1320 to go

  More than 1300 schools have put up their hands for air conditioning, but only 27 have received it.Work has begun at another 23 schools under the 5-year, $500 million project, according to figures from the NSW Department of Education. But the NSW opposition argued that at this rate, the air conditioning rollout would take decades.

Is Li - ion battery technology becoming obsolete? Will it roll onto the future with new developments? Here're the answers. The prevalence of smartphones has pervaded our daily lives. It is commonplace to see at least one, if not two, smartphones in the hands of people, especially youngsters, waiting at

In case of Li - Ion batteries you have minimal self-discharge, situation is much worse with Ni-Cd and Ni-MH. Some types of lithium batteries also make use of separator between the electrodes to further reduce it. These can get self discharge less than 1% a year.

Furthermore, they can be used in combination with renewable but fluctuating energy sources such as the Sun or wind, capturing and storing energy to be re-used later.

For Coxon, the lithium ion battery is a worthy Nobel recipient as it plays to the very origins of the prestigious prize.

"The practical application of science for the benefit of humanity; fundamental science placed directly into your hand," he said. "I am literally holding a phone in my hand right now."

- What changed? -

Unlike their predecessor, lead acid batteries developed in the mid-19th century, li-ion batteries are rechargeable.

They are smaller, lighter, longer lasting and can be made to be more powerful.

Electric car batteries "no longer weigh two tonnes but 300 kilogrammes (660 pounds)," said Sara Snogerup Linse, a professor in physical chemistry and a member of the Nobel Committee for Chemistry.

- How do they work? -

Scientist, 97, becomes oldest ever winner of Nobel Prize

  Scientist, 97, becomes oldest ever winner of Nobel Prize Three scientists have taken home the Nobel Prize for Chemistry, including the oldest ever winner. The trio, John B Goodenough, Stanley Whittingham and Akira Yoshino, share the nine million krona prize (£740,099).© Imagebridge The trio helped to refine and develop lithium-ion batteries Mr Goodenough is the oldest ever winner of a Nobel prize at the age of 97.The three worked together on developing and refining rechargeable lithium-ion batteries, making the age of global information technology, mobile and fossil-fuel free revolutions possible.

Lithium - ion batteries work by shuttling lithium ions back and forth between the battery 's two electrodes, the anode and cathode, through a liquid electrolyte in between. The battery discharges as the ions are gradually extracted from the anode and inserted into the cathode

Photo: Lithium - ion ( Li - ion ) batteries are less environmentally damaging than batteries containing heavy metals such as cadmium and mercury, but recycling them is still far preferable to incinerating them or sending them to landfill. Like any other battery , a rechargeable

When a battery is connected to a circuit, charged ions move inside the battery, usually in a chemical solution, between two electrodes -- an anode and a cathode.

Chemical reactions take place at each of the electrodes, creating a buildup of electrons on one end. The electrons seek to rebalance, but cannot move through the battery, forcing them to travel through the circuit, giving off electric energy.

The positive electrode is made from a composite of lithium -- the lightest metal known to man and the key to the design's success, according to Olof Ramstroem, a fellow committee member.

"Lithium has such enormously attractive properties and that means you can get a very lightweight battery that is small with high power and efficiency," he said after Wednesday's announcement in Stockholm.

"Lithium is very reactive... which is what we need -- we need the electrons from the lithium. This is all about trying to tame that and get it into that small battery package that is really useful to us."

- The downside -

An article published in the journal Nature last July warned that reserves of raw materials used in lithium ion batteries such as cobalt and nickel, are scarce and expensive and fast running out.

Will hotter temperatures make infections more common?

  Will hotter temperatures make infections more common? Will hotter temperatures make infections more common?The world of human inquiry knows no borders. Infinite lines connect disparate disciplines. From physics to public health, these researchers are pioneering new fields on the fringes of existing science.

Lithium - ion batteries are good choices for all types of electronic devices, from laptops to Lithium - ion batteries , also known as Li -on batteries , are rechargeable batteries , making them a Take a voltage reading with your voltmeter. Lithium - ion batteries may go into sleep mode if you

Related. 6. Lithium Ion Battery Charging Practices. 2. Using higher capacity rechargeable batteries in device. 6. Charging Li - ion batteries in parallel. Boot directly into another kernel from running Linux without bootloader. CRC32 catches errors, but then what's the point of SHA?

Lithium is found in a range of minerals and in salt or brine, while production of the electrodes require rare metals such as cobalt and nickel.

"We could not necessarily have predicted 40 or 50 years ago that tantalum, indium, all these interesting elements would become very important," said Coxon, pointing to environmental harms and stresses on infrastructure in places where the minerals are found -- especially in South America.

"It places pressure on how we ethically source these."

Large quantities of spent lithium ion battery components end up in landfills, he added. They are frequently shipped off to recycling facilities, often in developing countries, where they are stripped to their base parts and the reusable bits recycled.

"It is a very important environmental challenge," said Coxon.

Added Maeva Philippot, an electrical engineering researcher at the Vrije Universiteit Brussels: "Recycling will become more important as we have more and more batteries reaching the end of their lives."

- Looking ahead -

Scientists and engineers around the world are working to make li-ion batteries even smaller, longer lasting, quicker to charge and less volatile.

They are known to overheat and sometimes even explode, and are relatively expensive to produce, particularly due to the high cost of nickel and cobalt.

"There are new chemistries that are coming that will allow us to make even smaller batteries," said Philippot.

As for recycling: "Europe is making a new directive for batteries at the end of their lives and how they could be recycled and reused in other devices.

"For instance, electric vehicle batteries could be used at home to store energy at home and be charged by solar panels. There are many projects looking at the 'second life' or re-use of batteries."

US makes history with first all-female spacewalk .
US astronauts Christina Koch and Jessica Meir became the first all-female pairing to carry out a spacewalk Friday, following a spacesuit flub earlier this year that caused the historic mission to be aborted. Koch, an electrical engineer, was leading Meir, who holds a doctorate in marine biology and is making her first ever spacewalk. The two were working to replace a faulty battery charge/discharge unit, known as a BCDU.The station relies on solar power but is out of direct sunlight for much of its orbit and therefore needs batteries, and the BCDUs regulate the amount of charge that goes into them.

—   Share news in the SOC. Networks

Topical videos:

usr: 1
This is interesting!