Blar i NTNU Open på forfatter "Richter, Frank"
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Lifetime of Li-ion Secondary Batteries and Measurement of Key Parameters for Internal Temperature Profile Assessment
Richter, Frank (Doctoral theses at NTNU;2019:46, Doctoral thesis, 2019)The thesis’ purpose was to contribute to the understanding of thermal gradients within Li-ion secondary batteries. A first step was the determination of thermal conductivities of various electrode materials and separators. ... -
Single Electrode Entropy Change for LiCoO2 Electrodes
Richter, Frank; Gunnarshaug, Astrid Fagertun; Burheim, Odne Stokke; Vie, Preben Joakim Svela; Kjelstrup, Signe Helene (Journal article, 2017)Heat effects are known to be crucial for the performance of the Li-battery. In addition to the irreversible effects (e.g. Joule heat), reversible heat effects may play a role. These effects, i.e. the Soret and Seebeck ... -
The reversible heat effects at lithium iron phosphate- and graphite electrodes
Gunnarshaug, Astrid Fagertun; Kjelstrup, Signe; Bedeaux, Dick; Richter, Frank; Burheim, Odne Stokke (Journal article; Peer reviewed, 2019)Lithium ion batteries are used to store and produce electric energy. During the charging- and discharging processes, net heat is released or adsorbed in the battery. Temperature is one of the most important factors for ... -
Thermal conductivity and internal temperature profiles of Li-ion secondary batteries
Richter, Frank; Kjelstrup, Signe; Vie, Preben Joakim Svela; Burheim, Odne Stokke (Journal article, 2017)In this paper we report the thermal conductivity for several battery components. Materials were obtained from several electrode- and separator suppliers, and some were extracted from commercial batteries. We measured with ...