If they had used a safer electrolyte, the risk would have been reduced.
A research team at Ulsan National Institute of Science and Technology (UNIST), S. Korea, found a new physical organogel electrolyte with two unique characteristics: an irreversible thermal gelation and a high value of the Li+ transference number.
A Recent fire on a Boeing 787 on the ground in Boston, US, was caused by a battery failure, it resulted in the release of flammable electrolytes, heat damage and smoke. If they had used a safer electrolyte, the risk would have been reduced.
Electrolytes are essential components of supercapacitors, batteries and fuel cells. The Most widely used electrolyte is a liquid type since its overall ionic conductivity and value of transference numbers are better than solid-type electrolytes. However, safety concerns caused by its leakage and explosive nature, caused an extensive call for the research on the development of solid-type electrolyte.
The development of solid-type electrolytes, safe from explosion caused by high temperature and overcharge, is urgently needed to replace the liquid electrolytes. The solid electrolyte enables batteries to be safer as well as the use of higher energy electrode materials.
The most important parameter of electrolytes used in electrochemical cells is ionic conductivity. The use of solid-state electrolytes has been limited due to low ionic conductivity caused by their immobile matrix regardless of their own merits such as no leak, non-volatility, mechanical strength and processing flexibility.
Another parameter we should consider is transference of the number of ions. Electrolytes are characterized by their ionic conductivity, It is desirable that overall ionic results from the dominant contribution of the ions of interest. However high values of the cationic transference number achieved by solid or gel electrolytes have resulted in low ionic conductivity leading to inferior cell performances.
The research team of Profs. Hyun-Kon Song and Noejung Park of UNIST, presented an organogel polymer electrolyte characterized by a high liquid-electrolyte-level ionic conductivity with high a cationic transference number for Lithium ion batteries (LIB).
The research team acquired the two required properties simultaneously in polymer gel electrolytes: a liquid-electrolyte-level conductivity with a high transference number. Cyanoethly polyvinyle alchohol (PVA-CN) played a key role in the highly conductive gel electrolyte while another cyano resin, Cyanoethlyle pullulan (Pullulan-CN), was used as a control representing a liquid electrolyte containing cyano chains. The PVA-CN-containing liquid electrolyte was thermally gelated even without any chemical crosslinkers or polymerizations initiators.
Hyun-Kon Song and Noejung Park, both, professors of the Interdisciplinary School of Green Energy, UNIST, South Korea, led the effort. Fellow authors include: Young-Soo Kim, Yoon-Gyo Cho, and Dori Odkhuu from UNIST.
“We believe that this new type of electrolyte gel provides us with design flexibility in devices as well as enhanced safety and stability to electro-chemical devices,” said Prof. Song.
The Latest Bing News on:
- Five of a family suffer burns from battery explosionon July 8, 2021 at 10:01 pm
Five members of a family sustained burn injuries from a blast while recharging battery of an auto-rickshaw in the capital’s Kamrangirchar in the early hours of ...
- BMA rolls out electric battery vehicles at Broadmeadow Mineon July 7, 2021 at 5:38 pm
“We’re thrilled to have found the perfect solution in the battery electric vehicles, which will be used by our maintenance personnel to travel in Negligible-Explosion Risk Zones throughout the ...
- Pritzker issues disaster proclamation after lithium battery fire in Morrison July 5, 2021 at 5:19 pm
Illinois Governor JB Pritzker has issued a disaster proclamation for Grundy County in response to an industrial fire in Morris that forced thousands out of their homes. More than ...
- State Declares Disaster For Morris After Battery Fireon July 5, 2021 at 12:14 pm
Gov. JB Pritzker issued a disaster proclamation for Grundy County in response to an industrial fire in Morris.
- Ocean City fireworks show cancelled after the fireworks explode prematurely on the beachon July 5, 2021 at 8:54 am
All of Ocean City's Fourth of July fireworks shows were canceled after a fireworks display exploded prematurely on the beach: Officials are still investigating the cause of the explosion, which left ...
- Pumped hydro boost follows “battery blitz” as state responds to Callide coal explosionon July 4, 2021 at 6:48 pm
Queensland to invest in pumped hydro storage upgrade as it continue to look to energy storage in response to the Callide coal generator explosion.
- Can phone use at petrol station trigger an explosion?on July 3, 2021 at 5:00 pm
Using phones in a petrol station or near fuel can cause an explosion. Verdict: No. mobile phones cannot trigger fire when it encounters fuel except there is a spark FULL TEXTSince the introduction of ...
- Morris fire officials decide to let fire burn at abandoned building, fearing more explosions of lithium batteries insideon July 1, 2021 at 11:34 am
The mayor of Morris said the city didn’t know the building was being used to store batteries until it caught fire, and that he knows very little about the company that owns them.
- Smartphone Battery Draining Issue: This Most Ignored Issue May Be The Real Culpriton July 1, 2021 at 10:26 am
The smartphone battery draining issue could easily be fixed by paying attention to a setting that is often ignored by most of people. The poor ...
- Batteries Explode in Burning Abandoned IL Buildingon July 1, 2021 at 6:59 am
Lithium batteries have been noisily exploding inside a burning abandoned paper mill in northern Illinois and firefighters are letting the blaze burn out because they fear trying to extinguish it could ...
The Latest Google Headlines on:
The Latest Bing News on:
- Global Aluminum Electrolytic Capacitors Market Size, Capacity, Production, Revenue, Marketing Strategy Analysis Forecast 2021 to 2024on June 14, 2021 at 12:35 am
The electrolyte, which covers the rough surface of the oxide layer, operates as the second electrode, the cathode (-). E-caps have the largest capacitance values per unit volume compared to the ...