Evaluation of particle size of positive electrode active material

Introducing examples of measurement cases for important management items in the production of lithium-ion batteries and all-solid-state batteries!

We would like to introduce a case of particle size measurement of cathode active materials using laser diffraction conducted by our company. In air or liquid, laser light is irradiated onto the particles, and the angular dependence of the intensity of the light scattered by the particles is measured. By measuring the angular dependence of the scattered light intensity, the particle size distribution (particle size distribution) is calculated from the data. Using commercially available reagents as samples, measurements were conducted in a dry state without dispersing in a solvent. The particle size measurement results for NMC oxides showed a monodisperse state with particle sizes below several tens of micrometers, and the median diameter was calculated to be 12 micrometers. [Case Overview] ■ Measurement Method ・Dry method ■ Particle Size Measurement Results for NMC Oxides ・Monodisperse state with particle sizes below several tens of micrometers ・Median diameter is 12 micrometers *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

Determine particle size and particle size distribution! An example of measuring the particle size of silica and alumina particles in an aqueous medium.

Dynamic light scattering allows for the measurement of particle size and size distribution of nanoparticles dispersed in a liquid without separating the particles. Here, we present examples of particle size measurement for silica and alumina particles in an aqueous medium. Particles in solution exhibit Brownian motion that depends on their size, and the fluctuations in the scattered light generated when the particles are illuminated depend on the particle size. By observing and analyzing these fluctuations, we can determine the particle size and size distribution. [Alumina Measurement Results and Discussion] - As alumina approaches neutrality from strong alkaline conditions, it approaches its isoelectric point. - The surface charge of the particles decreases. - The repulsion between particles diminishes. - It can be inferred that particle aggregation is occurring. *For more details, please refer to the PDF document or feel free to contact us.*

• others

The purity of the electrolyte greatly affects the performance of the battery! It suppresses the volatility of sulfur components and converts them into a form that can be detected by IC.

We will introduce an example of analyzing the purity of diphosphorus pentasulfide using ion chromatography for the composition analysis of raw materials for all-solid-state batteries. Diphosphorus pentasulfide is one of the raw materials used in the production of electrolytes for sulfide-based all-solid-state batteries. As a pretreatment for IC measurement, the powder of diphosphorus pentasulfide was dissolved in alkaline water and converted into phosphate and sulfide salts. Subsequently, the sulfide ions were oxidized to sulfate ions to prepare the IC measurement solution. For more details, please refer to the published catalog. 【Solid Electrolytes (Partial)】 ■Li3PS4 ■Li7P3S11 ■Li6PS5Cl ■Li6PS5Br *For more information, please refer to the PDF document or feel free to contact us.

• Analysis and prediction system

The "Hotron Non-Contact Switch" allows you to open and close doors without directly touching door knobs or switches, making it hygienic! You can choose from two types: the "Hand Wave Sensor," which only requires you to wave your hand, and the "Foot Switch," which only requires you to place your foot at the entrance. It reduces the risk of virus and bacterial infections in places where hygiene is a concern, such as food factories, restaurants, hospitals, and nursing facilities. 【Features】 ○ Reduces the risk of virus infection by allowing door operation without contact ○ A wide variety of options to choose from based on application and location ○ Ideal for places where hygiene is a priority, such as food factories and medical facilities ○ Prevents unnecessary detection due to the switch mechanism 【Product Lineup】 ■ Hand Wave Sensor Series ○ Exposed waterproof type, front, down, and side-facing types "PF-R5" ○ Exposed type, front-facing type "PF-R1" ○ Embedded type, front-facing type "PF-U2" ○ Exposed type, downward wide type "PF-R4" ■ Foot Switch Series ○ Slim type with wide opening, vertical beam type "PF-01S" ○ Slim type with wide opening, horizontal beam type "PF-03S" ○ Standard type, horizontal beam type "PF-05" ◎ For more details, please download the catalog or contact us.

Do you have any concerns or requests regarding wired bed exit sensors? × Tangling or tripping over wired cables × Cable disconnection or damage × Worrying about forgetting to turn the switch back on after temporarily stopping the sensor. × Wanting to be notified of bed exits even from a location far from the nurse call outlet. Such concerns can be resolved simply by connecting our wireless nurse call linked set to the sensor! Our wireless nurse call linked set allows you to connect bed exit sensors like "Ugo-kun," "Foldable Thin Matta-kun," "Ayumi-chan," and "Just Place Pole-kun" to transmitters and receivers, reducing wiring around the bed area, alleviating concerns about tripping or falling due to cables, and contributing to a tidier work environment. Furthermore, it enables the use of bed exit sensors even from locations far from the nurse call outlet, allowing for more flexible equipment placement.

Hotron's vehicle detection sensors allow you to search for products that meet your needs from three categories: "Purpose of Use," "Location of Use," and "Product List." The sensors detect the passage of vehicles and notify you with a rotating light, or switch the display of parking availability. They manage vehicle presence, full parking, and exit warnings in parking lots, contributing to safe driving and smooth operational management within the parking area. They are used in various settings, from coin-operated parking to large-scale parking lots.

Management College Co., Ltd. will be exhibiting at the "24th [Tokyo] General Affairs, Human Resources, and Accounting Week [Autumn]" held at Makuhari Messe from September 10 (Wednesday) to 12 (Friday) within the "HR EXPO." This time, we will introduce the newly released "Quick Learning Program" from last October at our booth. This is a new training program aimed at new employees from Generation Z, designed to efficiently develop the six essential skills required for business professionals, allowing participants to engage in training actively and enjoyably. We will also present our popular "Management Game MG Training Series," and we sincerely look forward to your visit. [Free Seminar Announcement] Theme: Case Studies of Management Simulation Training in Listed Companies Our Takada will introduce trends in experiential learning and corporate case studies. There will also be special benefits for seminar participants (such as information on special free trial seminars), so we hope you will register for this as well. *The seminar will be held on September 10 (Wednesday) at 15:30 in Seminar Room G within the venue.

Developed for the purpose of improving the safety of sales areas, the SP Bracket-specific anti-fall part (NX-BSP). Simply inserting the bracket activates the internal spring, securing it firmly. It prevents unexpected dislodging, thereby averting product drops and accidents. Moreover, the release is easy and does not compromise workability, making it efficient for layout changes and sales area construction. It achieves a balance between "safety measures" and "work efficiency." An essential part for enhancing the safety of sales areas. Please make use of it for risk management at construction sites.