TY - CONF A1 - Sander, Luise T1 - Links Between Electrode Properties and Cell Performance in Commercial Sodium-Ion Batteries N2 - Our latest results of commercially purchased cylindrical sodium ion battery (SIB) cells will be presented. Two different cell types were dissasembled and thouroughly characterized on electrode as well as on material level. Both cell types comprise aluminum current collectors for anode and cathode, respectively. Furthermore, geometric electrode parameters, such as electrode size, thickness and loading, will be presented and linked to the electrical data-sheet values. Further in-depth characterization on material level revealed that both cathode active materials are composed of a cobalt free Ni-Mn-Fe-oxide. Interestingly, the cathode particles significantly differ in shape and size between the two cell types. Both anode active materials are graphite-free, and the particle structure points in both cases to a biomass-derived hard carbon material. Based on gas chromatography mesaurements coupled with mass spectrometry (GC-MS), both cell types utilize a mixture of carbonates as electrolyte, however, contain different conductive salts. Moreover, the measured, characteristic electrical features, e.g., capacity, Coulombic efficiency, and initial cycle life, will be discussed. Intriguingly, the cycling stability greatly differs between the cell types. Presumably, this behaviour can be mainly linked to the different morphology of the cathode active material. Overall, the work can give important insights in the composition and electrical behabiour of currently available SIB-cells. T2 - Sodium Battery Symposium (SBS-6) CY - Dresden, Germany DA - 03.09.2025 KW - Battery KW - Sodium-Ion-Battery KW - Electrochemical Energy Storage KW - Energy Storage PY - 2025 AN - OPUS4-64411 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sander, Luise T1 - Linking Material and Electrode Properties to the Cell Performance of Two Types of Commercially Available SIBs N2 - As the first commercial sodium-ion-batteries (SIBs) are available for purchase, it is possible to investigate material composition. Gaining an insight into the material composition of these SIBs is of interest not only for the classification of possible safety risks and hazards, but also in regards to recycling. Herein we report the preliminary investigations of the chemical and structural composition of first commercial SIB-cells. Two different SIB-cell types were compared in terms of electrode size, thickness, loading etc. Furthermore, the composition of the active materials and electrolyte was investigated and compared. Finally, the gained results were linked to the different data sheet performance of the two cell types. T2 - WISPER - Women in Science Promoting Energy Research CY - London, UK DA - 21.05.2025 KW - Battery KW - Sodium-Ion-Battery KW - Electrochemical Energy Storage KW - Energy Storage PY - 2025 AN - OPUS4-63284 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krug von Nidda, Jonas T1 - Porous „Ionophoric“ Carbon Materials: Synthesis Routes and Electrochemical Applications N2 - Porosity tuning and “doping” with heteroatoms and/or transition metals are key strategies to improve the performance of porous carbons. Nitrogen doped carbons (NDCs) with macrocyclic functionalities and the respective M-coordinated NDCs (M-N-Cs) containing FeN4 sites, are very promising electrodes for Na-storage and electrocatalytic conversions. Their functional groups are reminiscent of those in biomolecules like e.g. hemoglobin. The materials can carry ions and can be regarded as “ionophoric” carbons. T2 - AKK-Herbsttagung 2025 CY - Mainz, Germany DA - 22.09.2025 KW - Electrocatalysis KW - Energy Storage KW - Noble Metal Free KW - Nitrogen Doped Carbon PY - 2025 AN - OPUS4-64969 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krug von Nidda, Jonas T1 - Core-Shell Materials as Advanced Anodes for Sodium Ion Batteries N2 - The current imperative to shift towards an energy grid equipped with sustainable energy storage solutions has caused a renewed interest in sodium-ion batteries (SIBs). Hard carbons (HCs) are a promising option high-capacity anode materials in SIBs. Nevertheless, their elevated capacities frequently come at the cost of experiencing substantial non-reversible initial capacity losses. Commonly, significant losses are associated with irreversible reactions, such as the creation of the solid electrolyte interphase (SEI), that occur during the initial sodium insertion in HC-materials. Intriguingly, high values of irreversible capacity are often found for samples with experimentally determined low specific surface area.[1] A more comprehensive understanding of the structure-property relations is essential for quantifying and grasping the potential of hard carbon materials in sodium-ion batteries (SIBs). Thus, the objective is to employ analytical methods to establish a link between the structure and the electrochemical attributes of HC materials. This has been a challenge, partly due to the non-stoichiometric nature of the sodium storage mechanism and the disordered structure of HCs. To address the challenges mentioned above, our approach is to explore whether a core-shell structure can separate sodium storage and SEI-formation. This way, we can investigate and fine-tune storage capacity and irreversible losses, independently. The strategy involves the synthesis of various porous carbon structures to serve as the core material and their combination with sodium-conductive structures to core-shell materials. Herein, we will present different synthesis routes towards tailor-made carbon core materials. Moreover, different coatings concepts will be introduced, and the electrochemical performance of the core and core-shell materials compared. To elucidate the storage mechanism, the results of advanced analytical methods such as operando NMR and SAXS will be presented. Generally, these core-shell anodes promise to enable high capacities accompanied with low irreversible losses due to optimized SEI-formation. T2 - GDCh Electrochemistry 2024 CY - Braunschweig, Germany DA - 16.09.2024 KW - Sodium Ion Batteries KW - Negative Electrodes KW - Core Shell Materials KW - Energy Storage PY - 2024 AN - OPUS4-61145 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sander, Luise T1 - Commercially Available Sodium-Ion Cells: Links between Material and Electrode Properties and the electrochemical Performance N2 - As the first commercial sodium-ion-batteries (SIBs) are available for purchase, it is possible to investigate material composition. Gaining an insight into the material composition of these SIBs is of interest not only for the classification of possible safety risks and hazards, but also in regards to recycling. Herein we report the preliminary investigations of the chemical and structural composition of first commercial SIB-cells. Two different SIB-cell types were compared in terms of electrode size, thickness, loading etc. Furthermore, the composition of the active materials and electrolyte was investigated and compared. Finally, the gained results were linked to the different data sheet performance of the two cell types. T2 - MATSUS Conference 2025 CY - Sevilla, Spain DA - 03.03.2025 KW - Battery KW - Sodium-Ion-Battery KW - Electrochemical Energy Storage KW - Energy Storage PY - 2025 AN - OPUS4-62932 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sander, Luise T1 - Linking Material and Electrode Properties to the Cell Performance of Commercially Available SIBs N2 - As the first commercial sodium-ion-batteries (SIBs) are available for purchase, it is possible to investigate material composition. Gaining an insight into the material composition of these SIBs is of interest not only for the classification of possible safety risks and hazards, but also in regards to recycling. Herein we report the preliminary investigations of the chemical and structural composition of first commercial SIB-cells.[1,2] Two different SIB-cell types were compared in terms of electrode size, thickness, loading etc. Furthermore, the composition of the active materials and electrolyte was investigated and compared. Finally, the gained results were linked to the different data sheet performance of the two cell types. T2 - Advanced Battery Power 2025 CY - Aachen, Germany DA - 01.04.2025 KW - Battery KW - Sodium-Ion-Battery KW - Electrochemical Energy Storage KW - Energy Storage PY - 2025 AN - OPUS4-62924 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sander, Luise T1 - Comparison of Commercially Available SIBs: Linking Material and Electrode Properties to Cell Performance N2 - As the first commercial sodium-ion-batteries (SIBs) are available for purchase, it is possible to investigate material composition. Gaining an insight into the material composition of these SIBs is of interest not only for the classification of possible safety risks and hazards, but also in regards to recycling. Herein we report the preliminary investigations of the chemical and structural composition of first commercial SIB-cells. Two different SIB-cell types were compared in terms of electrode size, thickness, loading etc. Furthermore, the composition of the active materials and electrolyte was investigated and compared. Finally, the gained results were linked to the different data sheet performance of the two cell types. T2 - Batterieforum 2025 CY - Berlin, Germany DA - 21.01.2025 KW - Battery KW - Sodium-Ion-Battery KW - Electrochemical Energy Storage KW - Energy Storage PY - 2025 AN - OPUS4-62921 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sander, Luise T1 - Linking material and electrode properties to the cell performance of commercially available sodium-ion cells N2 - As the first commercial sodium-ion-batteries (SIBs) are available for purchase, it is possible to investigate material composition. Gaining an insight into the material composition of these SIBs is of interest not only for the classification of possible safety risks and hazards, but also in regard to recycling. Herein we report the preliminary investigations of the chemical and structural composition of first commercial SIB-cells.[1,2] Two different SIB-cell types were compared in terms of electrode size, thickness, loading etc. Furthermore, the composition of the active materials and electrolyte was investigated and compared. Finally, the gained results were linked to the different data sheet performance of the two cell types. T2 - Batterieforum Deutschland 2026 CY - Berlin, Germany DA - 20.01.2026 KW - Electrochemical Energy Storage KW - Battery KW - Sodium-ion-battery KW - EES KW - Energy Storage PY - 2026 AN - OPUS4-65588 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -