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Tiny Diamonds Can Prevent Short-Circuits and Fires in Mobile Phone Batteries: Study

Mixing nanodiamonds into the electrolyte solution of a lithium ion battery slows dendrite formation to nil through 100 charge-discharge cycles

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Tiny diamonds prevent fires in phone batteries
Tiny diamonds prevent fires in phone batteries. Pixabay
  • The researchers described a process by which tiny diamonds curtail the electrochemical deposition called plating
  • We anticipate the first use of our proposed technology will be in less critical applications
  • Battery buildups called dendrites  are one of the main causes of lithium battery malfunction

USA, August 28, 2017: Researchers have found that tiny diamonds (diamond particles 10,000 times smaller than the diameter of a hair) can prevent short-circuits and fires in lithium batteries widely used in various mobile devices from smartphones to laptops.

The new process that uses tiny diamonds can turn electrolyte solution – a key component of most batteries into a safeguard against the chemical process that leads to battery-related disasters.

In the study, published in the journal Nature Communications, the researchers described a process by which tiny diamonds curtail the electrochemical deposition, called plating, that can lead to hazardous short-circuiting of lithium ion batteries.

“We anticipate the first use of our proposed technology will be in less critical applications, not in cell phones or car batteries,” said Yury Gogotsi, Professor at Drexel University Philadelphia Pennsylvania, US.

“To ensure safety, additives to electrolytes, such as nano diamonds, need to be combined with other precautions, such as using non-flammable electrolytes, safer electrode materials and stronger separators,” Gogotsi added.

Also Read: Lithium Batteries can be charged faster in the near Future: Scientists

As batteries are used and charged, the electrochemical reaction results in the movement of ions between the two electrodes of a battery, which is the essence of an electrical current.

Over time, this re-positioning of ions can create tendril-like buildups almost like stalactites forming inside a cave.

These battery buildups, called dendrites, are one of the main causes of lithium battery malfunction.

As dendrites form inside the battery over time, they can reach the point where they push through the separator, a porous polymer film that prevents the positively charged part of a battery from touching the negatively charged part.

When the separator is breached, a short-circuit can occur, which can also lead to a fire since the electrolyte solution in most lithium-ion batteries is highly flammable.

To avoid dendrite formation and minimize the probability of fire, current battery designs include one electrode made of graphite filled with lithium instead of pure lithium.

The use of graphite as the host for lithium prevents the formation of dendrites. But lithium intercalated graphite also stores about 10 times less energy than pure lithium.

The new study showed that mixing nano diamonds into the electrolyte solution of a lithium ion battery slows dendrite formation to nil through 100 charge-discharge cycles.

The finding means that a great increase in energy storage is possible because dendrite formation can be eliminated in pure lithium electrodes.

The discovery is just the beginning of a process that could eventually see electrolyte additives, like nano diamonds, widely used to produce safe lithium batteries with a high energy density, Gogotsi noted. (IANS)

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Here’s How to Boost up Businesses in Times of Evolving Tech

The lab will develop science-backed hiring apps and tools that can measure diverse traits and abilities

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Team, Scrum Methodology
The performance-conducive transparency and actual visibility of the team ensure great team performances. Pixabay

Focusing on the science behind what makes some start-ups thrive and others fail, Australian researchers have unveiled a new lab that will use cutting edge neuroscience to advise how businesses can thrive in a world of constant technological change.

The “Future Minds Lab”, launched at the University of New South Wales (UNSW) Sydney this week, will include a team of 20 scientists, designers and psychologists to study the fundamental brain science and psychology behind innovation.

The team will work with industry partners to produce products and services to improve the way institutions and businesses approach different forms of innovation.

“Using fundamental research and development, our team is creating products and programmes to ensure workplaces and businesses are more resilient and better equipped to adapt to constant technological change,” Joel Pearson, Professor at the varsity, said in a statement.

“By using cutting edge neuroscience, we can discover what makes successful founders, teams and companies,” Pearson explained.

Business
Think about what you want to get from your employees. Pixabay

The lab, a 300-square metre custom built centre with virtual reality rooms, testing stations, brain stimulation devices, neuroimaging tech and research offices, will be used to develop products such as customised cognitive tests for start-ups and psychological interventions and online education programmes.

“Using technology such as gamified objective tests and mobile brain measurement, we will be able to develop tests that measure traits and abilities like creativity, resilience…” the Professor said.

Also Read- Tech Giant Apple Hits Back at Spotify For Antitrust Complaint: Report

The lab will develop science-backed hiring apps and tools that can measure diverse traits and abilities. These tools will leverage the latest Machine Learning (ML) algorithms to assess job candidates’ fit for specific roles and organisations.

“Workshops will be delivered to start-up founders that aim to increase their resilience and stress management techniques, decrease burnout, and help founders enhance their mental fitness,” Pearson noted. (IANS)