Case study of failure analysis of oxide-based all-solid-state batteries

It has high safety and can be used in various environments! Consistent analysis is possible.

We will introduce a case where a series of analyses, from identifying failure points to cross-sectional observation, was conducted on an oxide-based all-solid-state battery that was destroyed during reliability testing. Heat generation analysis revealed a strong tendency for heat generation on the side, and X-ray transmission observation showed a white linear contrast anomaly near the boundary where heat generation was observed in the X-ray transmission image. It is suspected that some abnormality is occurring in the white line area. When CP cross-sectional SEM observation was performed on the area where the anomaly was visible, layer delamination was observed. It is inferred that delamination occurred between the current collector and electrolyte layers due to the positive (negative) electrode layer expanding and contracting repeatedly during reliability testing. 【Case Overview】 ■ Sample Information: Oxide-based all-solid-state battery that experienced degradation due to charge and discharge testing ■ Heat Generation Analysis Result: A strong tendency for heat generation was observed on the side ■ Other Analysis Contents: - X-ray transmission observation - CP cross-sectional observation and elemental analysis using SEM *For more details, please refer to the PDF document or feel free to contact us.

• Contract Analysis

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 would like to introduce an example of analyzing the purity of phosphorus pentasulfide using ion chromatography for the composition analysis of raw materials for all-solid-state batteries. Phosphorus 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 phosphorus pentasulfide was dissolved in alkaline water and converted into phosphate and sulfide salts. Subsequently, 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 materials or feel free to contact us.

• Analytical Equipment and Devices

It is possible to perform non-destructive testing from fault location identification to internal observation! High-precision identification of heat generation areas can be achieved.

Thermal analysis is a method for identifying defective areas by detecting heat generated at leak points due to applied voltage using a high-sensitivity InSb camera. By detecting the weak heat generated from shorts and leaks with a high-sensitivity InSb camera, it is possible to non-destructively identify the failure points of electronic components such as semiconductors. Furthermore, non-destructive observation can also be performed using X-ray inspection equipment. 【Features】 ■ Identifying defective areas by detecting heat generated at leak points with a high-sensitivity InSb camera ■ Analyzing samples in a non-destructive state, and also capable of analyzing electronic components that are difficult to analyze with OBIRCH or emission methods ■ Using the lock-in function to acquire phase information allows for high-precision identification of heat generation points *For more details, please refer to the PDF document or feel free to contact us.

• Contract Analysis

Cracks that couldn't be detected visually might be found with X-rays!

When stress such as warping, bending, or twisting is applied to the printed circuit board, cracks may occur inside the MLCC (Multi-Layer Ceramic Chip Capacitor). Additionally, cracks that occur internally are often hidden by the electrodes, making it difficult to detect them from the exterior. In such cases, how about checking with X-rays? [Observation Details] ■ Oblique CT Observation It is possible to perform CT without destroying the printed circuit board, in its original state. ■ Orthogonal CT Observation It is possible to observe the shape of the components in their original state. *For more details, please refer to the PDF document or feel free to contact us.

• Other inspection equipment and devices
• X-ray inspection equipment

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If you require a detailed technical explanation, please contact us.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without affecting the base material with heat. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

To customers considering the introduction of vehicle detection sensors for parking lot construction, design, and management: Are you facing any issues with the challenges you currently have or selecting the right sensors for parking lot management? Hotron offers free materials that explain how to utilize vehicle detection sensors and the benefits of their introduction! ▽ Here is the lineup of materials ◉ Basic Guide to Vehicle Detection Sensors This guide focuses on the challenges and solutions in parking lot operations, introducing the overview of vehicle detection sensors. ◉ Key Points for Introducing Vehicle Detection Sensors This material discusses the benefits of introduction based on installation locations and specific challenges. ◉ Case Studies of Vehicle Detection Sensor Implementation This document introduces the challenges before implementation and the results after introduction. For more details, please download from our website and check it out. https://www.hotron.co.jp/download/

Fukuda Co., Ltd. has been pursuing leak detection for 60 years and is committed to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing properties. We will propose the appropriate testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

Thank you very much for visiting our company website and catalog, and for your interest in our diesel engine generators. From customer surveys, we received the following feedback as the most common requests: - I want to see the actual generators that have been installed. - I want to see the operation under actual load. - I want to hear the opinions of companies that have installed the generators. - I want to see the operating generators before making a purchase. After all, it’s understandable to be concerned about purchasing a generator without seeing the actual unit first, right? As the saying goes, "Seeing is believing..." we will be holding this tour. It is located in that area of the Kanto region where the maximum temperature exceeds 40°C during the summer. We successfully operated it again this summer, so we are confident about handling the heat (sweat)... Furthermore, it has been confirmed that it is "fuel-efficient" due to the world-leading "Scania engine" installed. This will surely help reduce daily operating costs. Please note that while we will provide kind and courteous assistance, the meeting point and dispersal will be at the site (transportation costs and other expenses will be borne by the customer), so please understand this in advance. Contact: Kaneko