News from MEP

The study presents in situ electrochemical impedance spectroscopy data measured during (de)sodiation and (de)lithiation of a commercial hard carbon anode material comparing the contributions to the hard carbon electrode resistance (Ranode), i.e., charge transfer (RCT), pore (Rpore), and separator resistance (RHFR).

Today, after almost two years of collaboration in the TUM.Battery network, we can look back on a very successful time. Despite the challenges that Covid-19 pandemic brought to all of us, with restricted laboratory operations in spring and again towards the end of the year, numerous publications and project starts could be reported this year.

Red-phosphorus-impregnated carbon nanofibers for sodium-ion batteries and liquefaction of red phosphorus / Yihang Liu, Qingzhou Liu, Cheng Jian, Dingzhou Cui, Mingrui Chen, Zhen Li, Teng Li , Tom Nilges, Kai He, Zheng Jia & Chongwu Zhou / Nature Communications / Nature communications 11.1 (2020): 1-8 - DOI

The Munich School of Engineering and the cooperating partners are looking forward to the cooperation in the joint research undertaking “STROM” and are grateful for the funding of the “Bayerische Forschungsstiftung” and the involved industrial partners. Further information in German language only can be found here:

In the new publication in Cell Reports Physical Science present the researchers at the Institute for Electrical Energy Storage Technology – EES an optimization framework that allows the stacking of the following applications on a single battery storage: frequency containment reserve, peak shaving, self-consumption increase, and spot-market trading. It shows that by tapping into multiple revenue…

MEP Research News

Scientists of the Chair of Technical Electrochemistry study the chemical and electrochemical processes leading to the degradation of the standard Li-ion battery.

Scientists study the growth of solid electrolyte interphases (SEI) on graphite anodes in the graphite-NMC-cells and characterize the accumulation of Li on the graphite particles. Furthermore the impact of lamination, formation and cycling of the cell on this SEI accumulation was quantified.

Modelling of the Calendering Process of NMC-622 Cathodes in Battery Production Analyzing Machine/ Material–Process–Structure Correlations David Schreiner,* Maximilian Oguntke, Till Günther, and Gunther Reinhart / Energy Technology 7.11 (2019): 1900840, DOI

In the recent publication "Li-ion half-cells studied operando during cycling by small-angle neutron scattering" a Li-ion half-cell with a graphite electrode is cycled against a metallic lithium counter-electrode using small-angle neutron scattering.

The recently published paper "Analysis and modeling of cycle aging of a commercial LiFePO4/graphite cell" by Dr. Maik Naumann and co-authors deals with the cyclic aging of commercial LFP graphite cells and its modeling.   Based on a large-scale cycling experiment, the most important influencing parameters for aging were identified and transferred into a semi-empirical model. This model was…