Lithium-ion batteries represent the dominant rechargeable battery on the market today. They can be found in many applications including consumer electronics, electric vehicles and industrial equipment. Due to the tremendous adoption of lithium-ion batteries in recent years, battery technology is the focus of a diverse set of research areas aiming to improve battery lifetime, performance and safety.
Dynamic mechanical analysis (DMA) is a technique to measure the response of materials when they are subjected to dynamic or cyclic forces. Typically, dynamic mechanical analysis involves looking at the elastic and viscous response of the material when it is under a small oscillating load that probes the molecular structure’s response to the perturbation . Other variables, such as temperature, time and frequency may be changed as part of the testing to characterize how the material performs under different environmental conditions.
Whether you’ve used a cell phone or driven an electric vehicle (please, not at the same time), you’ve probably come to realize that lithium-ion batteries are taking over the energy world. They power our portable electronics, vital medical equipment, electric vehicles, and renewable energy storage. As the market expands, researchers are finding ways to make Li-ion batteries increasingly powerful, dependable, and safe, all while minimizing production time and cost.
From plastic for medical devices to rubber for tires, the materials we use must meet increasingly high demands. Product manufacturers and consumers expect their materials to look good, perform well, and cost less, all while being environmentally friendly. Fulfilling all these expectations requires deep understanding of material behavior from the molecular level to real world mechanical properties. Since there are many factors that affect the properties of materials, precise measurement tools and methods are required to ensure that materials fulfill the high expectations of our world. A key measurement and analysis method to evaluate the properties of materials at various stages of development and production is Dynamic Mechanical Analysis (DMA).
From fresh steak to new phones, the goods we buy are usually wrapped in one thing: plastic. And plastic dominates how we pack and store products for good reason – it is lightweight, cost-efficient, and durable. Plastic helps us transport and receive goods in perfect condition, thus reducing food waste and preventing damaged goods from heading to landfills.
In autumn of 2021, the 26th UN Climate Change Conference of the Parties (COP 26) met in Glasgow to work out agreements to curb greenhouse gas emissions and prevent additional climate change. COP 26 built upon the Paris Agreement to limit global warming below 2-degrees Celsius by achieving net zero carbon dioxide (CO2) emissions. These two agreements will shape how governments and industries work together to reduce climate change over the next decade.
Whether researchers are optimizing the texture of yogurt or studying adhesives’ curing, rheometry helps us understand materials and predict their behavior. Rheometry measures the amount of deformation a material or liquid undergoes when a force is applied. The combination of stress, strain and shear behavior forms the basis of rheology, the science of the deformation of materials.
Lithium-ion batteries are transforming key industries through efficient power storage. Today’s battery scientists must build upon previous discoveries while focusing on the battery elements that will drive progress in leading application areas.