Fluorine

• As part of Sony’s G series of lenses, this full-frame offering is equipped with many of the brand’s latest optical technologies.
• The lens features extra-low dispersion and aspherical glass elements to combat many common aberrations as well as an 11-blade aperture for smooth bokeh.
• There is a large focusing ring along with a physical aperture ring that can be de-clicked via a switch for smooth exposure changes during video.
• The FE 24-50mm f/2.8 G lens is designed to last with a moisture- and dust-resistant construction and a fluorine coating on the front element.

• The 72nd addition to the full-frame E-mount lens lineup is extremely compact and lightweight yet maintains high-resolution performance synonymous with Sony's G lens series.
• "The demand for light and compact standard zoom lenses is increasing, and our new FE 24-50mm F2.8 G lens offers a F2.8 standard zoom option for creators seeking portability, without a sacrifice.
• It is a lens option ready to go anywhere," said Yang Cheng, Vice President, Imaging Solutions, Sony Electronics Inc. "The FE 24-50mm F2.8 G is our first-ever full-frame F2.8 standard zoom lens in the G series lens lineup.
• The FE 24-50mm F2.8 G's 11-blade circular aperture and well-controlled spherical aberration creates the beautiful, smooth bokeh known to the G lens series.

• By modifying affordable commercial coolants to function as battery electrolytes, we were able to produce a battery that puts out its own fire.
• We subjected these batteries to the nail penetration test, a common method for assessing lithium-ion battery safety.
• Driving a stainless steel nail through a charged battery simulates an internal short circuit; if the battery catches fire, it fails the test.

Why it matters

• High outdoor temperatures or uneven temperatures within a battery pack seriously threaten batteries’ safety and durability.
• Energy-dense batteries, such as the lithium-ion versions that are widely used in electronics and electric vehicles, contain an electrolyte formulation dominated by organic molecules that are highly flammable.
• As scientists studying energy generation, storage and conversion, we have a strong interest in developing energy-dense and safe batteries.

How we did our work

• However, most known nonflammable organic solvents contain fluorine and phosphorus, which are expensive and can have harmful effects on the environment.
• We focused on a mature, safe and affordable commercial fluid called Novec 7300, which has low toxicity, is nonflammable and does not contribute to global warming.

What still isn’t known

• For this reason, our study focused predominantly on self-extinguishing potassium-ion batteries, although it also showed that our electrolyte works well for making self-extinguishing lithium-ion batteries.
• If the industry embraces it, we expect that companies will be able to manufacture nonflammable batteries using their existing lithium-ion battery facilities.

Apparao Rao receives funding from the R. A. Bowen Endowed Professorship funds at Clemson University. Bingan Lu does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

• The Global Fluorine-free Water Repellent Market Size is expected to reach USD 538 Million by 2029, growing at a CAGR of 6.2% from 2023 to 2029.
• The market for fluorine-free water repellent is growing as a result of changing regulatory trends and growing environmental concerns.
• The market for fluorine-free water repellent is mostly driven by the growth of the outdoor recreation and clothing industries.
• One significant driver propelling the market for fluorine-free water repellent is a shift in customer preferences towards sustainable and eco-friendly goods.