Blockchain based platform for battery tracking

Batteries are energy storage devices that are present in several applications, such as: cell phones, notebooks, electric vehicles, in renewable energy generation systems. There is a strong interest from the different actors in the battery supply chain who are interested in knowing the entire history of batteries, avoiding battery tampering, changing components and cells without […]

Medium-Temperature Sodium-Iodine Battery System

A medium-temperature sodium-iodine battery system is presented. The rechargeable molten-sodium system works at approx. 100 °C with high efficiency, and potentially lower cost than existing high-temperature sodium-batteries (which are usually operating at a temperature of around 300 °C). Our battery system uses an aqueous iodine/iodide solution as catholyte and sodium-ion conductive Zr-based NaSICON (sodium super […]

Customized electrolyte solutions from E-Lyte Innovations for high-energy lithium-ion batteries containing silicon-based anodes and nickel-rich cathodes

Lithium-ion batteries (LIB) are currently used in a variety of applications, including electro-mobility, medical technology, consumer electronics, robotics and aviation. Each application field has specific requirements on the battery regarding cycle life, safety, energy and power density and can benefit from customized cells. In order to meet the increasing demands for higher energy densities, e.g. […]

Application-oriented analysis of ageing processes in Li-C half cells

Mechanical modifications or harmful side reactions are undesirable ageing effects that can occur during cycling. These phenomena have a negative impact on cell performance and consequently limit cycling stability. The focus here is on investigations of ageing processes such as volume changes during cycling. Thickness measurements of Li-C half cells with a carbonate-based electrolyte are […]

Characterization of Li-Ion Battery Aging – Design of Experiments and Test Setup

Battery Aging represents a major challenge for the design and operation of battery energy storage systems. Models to describe the degradation depending on factors like state of charge, temperature and charge-discharge cycles do exist. To parameterize these models, time-consuming and cost-intensive experiments are necessary so far. In the BaPoBs (Battery aging and Pareto-optimal operating strategy) […]

Online impedancespectroscopy in micromobility

The ongoing transformation of the mobility sector to- wards more environmentally friendly transport systems is leading to increasing market penetration of electrified mobility solutions. As part of these solutions, personal micromobility represents a steadily growing market. The need for fast charging options results in increased requirements for thermal management and state estimation algorithms to operate […]

Challenges in Direct Recycling of Lithium-Ion Batteries from Battery to Black Mass

The recycling of aged or defective Li-ion batteries (systems and cells) is an essential source of raw materials to produce tomorrow’s batteries. Nowadays, the established recycling processes are based on energy intensive and complex pyrometallurgical and hydrometallurgical extraction of raw materials. Despite of these established routes, from energetic point of view, it is conceivable to […]

Modeling tailor-made 3D-structures of solid-state polymer cathodes

Solid electrolytes in lithium-ion batteries are promising regarding increased energy densities, fast charging properties and offer advantages in terms of safety due to the lower fire risk. However, besides the electrochemical properties of the materials used, the chemical processes are limited by the transport mechanism and transportation routes of charged species, which effect the cell […]