[KH Explains] Why doctors refuse to bend despite lack of public support
[KH Explains] What does Apple's dead car project mean for Samsung, Hyundai?
Actor Lee Jae-wook vows legal action against malicious rumors
Yoon, Zuckerberg discuss AI, digital ecosystem in Seoul
Police raid striking doctors' homes, offices, after deadline passes on return-to-work order
Interior minister renews calls for trainee doctors to return to work
Yoon touts improved Japan ties on Independence Movement Day as gateway to 'new world'
Bitcoin soars to record high in Korea
S. Korea, US voice 'deep concern' over NK's definition of S. Korea as 'hostile' country
More than half of people in 24 countries dissatisfied with their democracy: report
Hanwha Total ramps up plastic production used for EV battery separatorsBy Kim Byung-wook
Published : Dec. 7, 2020 - 16:19
The expansion, which cost 40 billion won ($36.9 million), will allow the South Korean petrochemical company to produce 140,000 tons of ultrahigh-molecular-weight polyethylene (UHMWPE) at its plant in Daesan, South Chungcheong Province.
As the name suggests, UHMWPE is characterized by an extremely high molecular density and long molecular chains. Such properties offer a much greater tensile strength than typical polyethylene, making the UHMWPE a suitable raw materials for separators inside electric vehicle batteries.
Separators are basically thin elastic walls with tiny holes that divide cathodes from anodes. When batteries are charged and discharged, ions go back and forth between cathodes and anodes through these tiny holes. Separators prevent cathodes and anodes from reacting to each other and triggering short circuits or fires. In short, separators are what prevent batteries from exploding.
The UHMWPE has recently gained attention as demand for thinner but stronger separators has increased significantly, according to the company. The thinner the separators, the thicker the cathodes and anodes can become, increasing the energy capacity of batteries, which translates to a greater driving range for EVs.
By Kim Byung-wook (firstname.lastname@example.org)
Yoon touts improved Japan ties on Independence Movement Day
Bill to probe first lady fails to pass
Address by President Yoon Suk Yeol on the 105th March 1st Independence Movement Day