Green polymer electrolytes based on polycaprolactones for all-solid-state high-voltage lithium metal batteries
As one of the important components within lithium batteries, the electrolyte plays a vital role in aspects of safety and achieving long-term stable electrochemical performance. Next-generation lithium metal batteries (LMBs) are currently limited by the occurrence of inhomogeneous lithium deposits, eventually dendrite formation, or disadvantageous flammability arising from organic liquid electrolytes. In contrast, solid-state polymer […]
Revealing the Influence of Film-forming Electrolyte Additives on Lithium Metal Batteries
With high specific capacity, lithium metal is a promising material and might be an option for next generation of battery technology. However, the application of lithium metal batteries (LMBs) remains challenging due to low coulombic efficiency and safety issues arising from the formation of ‘dead’ lithium, unstable SEI layers on lithium metal surfaces and eventually […]
3D simulation of sodium-iodine secondary batteries for stationary energy applications
High-temperature liquid sodium batteries (e.g. sodium-sulfur) are a well-established technology for large-scale grid storage. Combining the molten sodium anode with an aqueous iodine cathode overcomes the problems of thermal loses and sealing by reducing the operating temperature to about 100°C. This leads to higher cost efficiency, energy density and a simplified cell design. Due to […]
3D simulation of sodium-iodine secondary batteries for stationary energy applications
High-temperature liquid sodium batteries (e.g. sodium-sulfur) are a well-established technology for large-scale grid storage. Combining the molten sodium anode with an aqueous iodine cathode overcomes the problems of thermal loses and sealing by reducing the operating temperature to about 100°C. This leads to higher cost efficiency, energy density and a simplified cell design. Due to […]
Electrochemical Limits of Electrolytes for Mg-Based Batteries Containing MgxClyz+-Complexes
The high capacity of Mg metal (2205 mAh g−1; 3833 mAh cm−3), its low standard potential of −2.36 V vs. SHE (Mg|Mg2+), as well as its high abundancy (Li: 18 ppm, Mg: 2.2% in the earth crust1) and resulting low costs render Mg-metal based batteries great alternatives to state-of-the-art Li ion batteries (LIB).2 Further on, […]
Influence of particle properties on the processing of hard carbon anodes and nanostructured cathode materials for use in sodium-ion batteries
Electrochemical storage is a key technology of the current century. In the future, electricity storage systems will become more important components of energy systems, especially for the upcoming electric mobility and for everyday use. Lithium-ion batteries (LIB) are currently the most important electrochemical energy storage devices. The largely mature technology is characterized by high gravimetric […]
Galvanic Corrosion as a Challenge for the Application of Ionic Liquids in O2ǁLi Cell Chemistries
The future changes to our transportation systems and societal consumption patterns demand the development and improvement of reliable and safe high-energy storage systems for both mobile and stationary applications.[1] In recent years, O2ǁLi cell chemistries have been under investigation as promising beyond-lithium ion candidates in mobile applications, mainly due to their superior theoretical specific energy […]
Influence of particle properties on the processing of hard carbon anodes and nanostructured cathode materials for use in sodium-ion batteries
Electrochemical storage is a key technology of the current century. In the future, electricity storage systems will become more important components of energy systems, especially for the upcoming electric mobility and for everyday use. Lithium-ion batteries (LIB) are currently the most important electrochemical energy storage devices. The largely mature technology is characterized by high gravimetric […]
Asymmetric Anions for enhanced Ionic Liquid-based Electrolytes in O2ǁLi-Batteries
To satisfy the need for high-energy batteries, which are for example used for electric vehicles, ongoing research is necessary and new cell chemistries beyond lithium-ion are required. The lithium-oxygen (O2ǁLi) battery is a promising candidate to enable high energy density batteries because of their high theoretical specific energy, if oxygen storage is excluded. However, the […]
In operando heat generation and safety analysis of sodium ion batteries (SIBs) by means of sophisticated calorimetry
The abundantly available precursors, the environmental friendliness and the inherent safety are always a driver for new energy storage applications and also much interest in Na-ion batteries is generated because of the lower material cost compared to Li-ion batteries. In the recent decade, the crucial need for the improvement of battery safety is emphasized and […]