Short-Term Trading for Grid-Scale Battery Energy Storage Systems
We extend a recent grid-scale battery high-frequency-intraday-trading dynamic programming formulation of the rolling intrinsic by integrating price forecast information. We demonstrate that blindly relying on inaccurate forecasts leads to poorer financial outcomes, compared to the myopic RI. However, carefully constructed informed price forecasts, based on public information, can significantly enhance trading yields. Moreover, we argue […]
Quantifying the Impact of Schedule Freezes on Redispatch Needs and Battery Revenues in the German Power System
The rapid growth of battery energy storage systems in Germany poses a challenge for transmission grid congestion management: while grid operators require reliable schedules several hours before delivery to plan redispatch measures, batteries can continue trading on wholesale markets until shortly before real time. This schedule uncertainty forces grid operators to reserve additional redispatch capacity, […]
Short-Term Trading for Grid-Scale Battery Energy Storage Systems
We extend a recent grid-scale battery high-frequency-intraday-trading dynamic programming formulation of the rolling intrinsic by integrating price forecast information. We demonstrate that blindly relying on inaccurate forecasts leads to poorer financial outcomes, compared to the myopic RI. However, carefully constructed informed price forecasts, based on public information, can significantly enhance trading yields. Moreover, we argue […]
Quantifying the Impact of Schedule Freezes on Redispatch Needs and Battery Revenues in the German Power System
The rapid growth of battery energy storage systems in Germany poses a challenge for transmission grid congestion management: while grid operators require reliable schedules several hours before delivery to plan redispatch measures, batteries can continue trading on wholesale markets until shortly before real time. This schedule uncertainty forces grid operators to reserve additional redispatch capacity, […]
Aging-related thermal conductivity change in LFP automotive batteries: characterization and understanding through internal optical-fiber temperature sensors, ex-situ and modelling analyses
Understanding aging mechanisms of lithium-ion batteries (LIBs) is essential to assess long-term performance and durability, with temperature playing a key role in both degradation kinetics and thermal behavior. Within the Horizon Europe project AutoMAT, this work investigates aging-induced variations in thermo-physical properties of LIBs—namely radial and axial thermal conductivity (Kr, Kl) and specific heat capacity—which […]
Multiphysics Simulation of Lateral Impact Effects on EV Battery Safety: From Mechanical Deformation to Thermal Runaway Prediction
Our methodology integrates various physics domains, commencing with detailed crash simulations. These simulations analyze the mechanical deformation experienced by battery cells and entire packs under a side pole impact scenario. A crucial step involves determining the critical strain thresholds at which an internal short circuit is predicted to initiate. This data-driven insight is then seamlessly […]
Chances and challenges in applying LMFP for high energy Lithium-ion batteries
For electric vehicles and many other applications, Lithium-ion batteries (LIB) with high energy density, long cycle life, high safety and low cost are required. Additional criteria like avoidance of critical raw materials (CRM), reliable supply chains and environmentally friendly production processes gain more and more importance. While for a long time, Nickel-rich (Ni-rich) Lithium Nickel […]
Challenges and opportunities in the wet processing of sulfide-based solid electrolytes for the cathode fabrication for solid-state lithium-ion batteries
Small-sized electrolyte particles are beneficial for the performance of solid-state batteries (SSBs), as they enhance the interconnection between the corresponding materials and thereby improve lithium-ion mobility, leading to reduced internal lithium-ion resistance. In this study, the comminution of commercial Li₆PS₅Cl argyrodite electrolyte was investigated under wet conditions in xylene using the dual centrifuge Delta Vita […]
From Asian Dominance to Western Resurgence: How Next-Gen Batteries Reshape Global Applications and Markets
The global battery landscape is shaping rapidly in terms of technology development and industrialization, with geopolitical influences becoming more and more relevant. Fast advancements in battery chemistries and manufacturing transcend performance limits, making batteries increasingly well-suited for more specialized emerging market applications, such as C&I use cases or the defense sector. While the traditional automotive […]
Engineering Stable Interfaces: Modifying the Surface of NMC811 with Tailored Phosphonic and Phosphinic Acids
Lithium-ion batteries are a vital part of the transition to renewable energies and electrified transportation. Ni-rich layered oxides, with at least 80 % nickel, are of particular interest due to their high specific capacity of around 200 mAh g-1 and their high average potential (ap-prox. 3.7 V vs Li/Li+).[1] Despite these advantages, a further increase […]