Particle size analysis, particle size measurement, or simply particle sizing is the collective name of the technical procedures, or laboratory techniques which determines the size range, and/or the average, or mean size of the particles in a powder or liquid sample. Particle Size Analysis Pdf,Particle Size Analysis Methods,Particle Size Analyzer Principle,Particle Size Analyzer For Nanoparticles Dandong Dongfang Measurement & Control Technology Co., Ltd. , https://www.dfmc-tec.com
Particle size analysis is part of particle science, and its determination is carried out generally in particle technology laboratories.
The particle size measurement is typically achieved by means of devices called Particle Size Analyzers (PSA) which are based on different technologies, such as high definition image processing, analysis of Brownian motion, gravitational settling of the particle and light scattering (Rayleigh and Mie scattering) of the particles.
According to the Digital Trends website, lithium-ion batteries are widely used in various electronic products. Samsung recalled the Galaxy Note7 for fire and explosion. People realized that lithium-ion batteries have safety problems: they will swell and then may catch fire or explode. Caused a safety accident.
In a paper published in the Journal of the Electrochemical Society, scientists at the Canadian Light Source studied detailed internal changes in the expansion of lithium-ion batteries.
Toby Bond, an energy storage and composites researcher, told Digital Trends, "We want to understand the internal changes that occur when a lithium-ion battery produces gas and expands into a shape like a pillow. Causes lithium ion expansion. There are many reasons for this, but they are usually overheated, overcharged, or other extremes. Many lithium-ion batteries do not cause serious consequences if they are inflated—some can even continue to be used, but swelling can also be a precursor to a fire or explosion. â€
According to Digital Trends, the research team used high-resolution CT (computed tomography) to create a three-dimensional image of the interior of a lithium-ion battery that produces gas and expands before and after.
Bond said, "We found that there are some small defects in the arrangement of the electrodes. These defects become more pronounced when the battery expands. This may affect the condition after the battery, because the inconsistency of the expansion will affect the internal battery. The distribution of pressure."
According to Digital Trends, it is unclear whether this expansion is the culprit of recent lithium-ion battery-related disasters, but the Canadian Light Source study reveals potentially significant design flaws to some extent. Given that many electric vehicles use the same design of lithium-ion batteries - but on a larger scale, it is hoped that this research will help improve battery safety.
Bond said, "We have initially revealed the internal changes in the expansion process of commercial lithium-ion batteries. We hope that battery manufacturers can use our research results to better understand the expansion process. If these tiny manufacturing defects will cause significant Impact, manufacturers can produce a safer battery by better controlling these defects or modifying the internal structure of the battery to prevent the battery from expanding."