OCV hysteresis in nickel metal hydride batteries

DOI

NiMH batteries exhibit a hysteresis, or path dependence, regarding the rest voltage of the system. Depending on charge/discharge history of the battery the rest voltage will be found between two boundary values for each state of charge. Most of this phenomenon seems to arise from the positive NiOH electrode, which is a proton intercalation electrode and changes structure between charged and discharged states. A possible explanation for the different material characteristics at the same system state could be small changes in the structure depending on the charge/discharge history. This experiment aims to track any structural changes in the disordered Ni(OH)2/NiOOH system at the same state of charge but with different charge/discharge paths.

Identifier
DOI https://doi.org/10.5286/ISIS.E.RB1920422-1
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/105597911
Provenance
Creator Professor Göran Lindbergh; Ms Alice Gratrex; Mrs Jenny Börjesson Axén; Dr Helen Playford
Publisher ISIS Neutron and Muon Source
Publication Year 2022
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Chemistry; Construction Engineering and Architecture; Engineering; Engineering Sciences; Natural Sciences
Temporal Coverage Begin 2019-09-16T07:30:00Z
Temporal Coverage End 2019-09-18T08:35:08Z