View source for Item:OSW81ec515cf7ed48488563e2f997b84d22

This dataset was used as an example in the {{Template:Viewer/Link|page=Item:OSW6499d04ced9649f8bbc50f1e940a50c8|url=|label=Battery2030+}} Excellence Seminar, {{Template:Viewer/Link|page=Item:OSW380cbebbc6b441948ce5fde34679b504|url=|label="How Semantic Technology Accelerates Battery Innovation"}} by {{Template:Viewer/Link|page=Item:OSW72e733f317ef4cf9b8ca53e906c9acb9|url=|label=Dr. Simon Clark}}. 

== Scope ==
This record contains raw data from the constant-current discharge of a [[:Category:OSWb61b96acf2f44b7482d5565fe3a2d88b|CR2032]] lithium coin cell at 11 mA. The test was performed using a [[Item:OSW4956eab590f649c18139b1f292cc836f|BioLogic]] battery cycler with data recorded at 1-second intervals. The CR2032 cell is manufactured by [[Item:OSW249dcc24b5ab4916a8e5f813fe44cb44|VARTA]] and was tested in ambient laboratory conditions. The dataset is intended to demonstrate ontology-based linked data reporting that is also consistent with the FAIR principles. RDF metadata is made available in metadata.jsonld and metadata.html formats. 

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= Files =

== Raw Data ==
{| class="wikitable"
|Filename
|Description
|Format
|Usage
|-
|sintef__cr2032__discharging_11_mA__20240216.bdf.csv
|Raw discharge time series in CSV format.
|CSV
|Main file for time series visualization and processing.
|-
|sintef__cr2032__discharging_11_mA__20240216.bdf.json
|Time series data in structured JSON format.
|JSON
|Demonstration of alternative formats for time series data.
|-
|sintef__cr2032__discharging_11_mA__20240216.bdf.txt
|Tab-separated plain text file containing the same data.
|TXT
|Demonstration of alternative formats for time series data.
|-
|sintef__cr2032__discharging_11_mA__20240216.bdf.parquet
|Compressed binary format optimized for large-scale data processing.
|Parquet
|Demonstration of high-performance serialization of time series data.
|}

== Visualization ==
{| class="wikitable"
|Filename
|Description
|Format
|Usage
|-
|sintef__cr2032__discharging_11_mA__20240216.plot.png
|Plot showing current and voltage vs time.
|PNG
|Visual overview of the discharge profile.
|-
|sintef__cr2032__discharging_11_mA__20240216.plot.ipynb
|Jupyter Notebook to generate the visualization.
|IPYNB
|Reproducible plotting and analysis.
|-
|cr2032.image.png
|Photo of the physical CR2032 cell used in the test.
|PNG
|Referenced in the metadata for visual context.
|}

== RDF Metadata ==
This dataset contains RDF metadata that is annotated with terms from controlled vocabularies (e.g. dcat, csvw, schema.org) and domain-specific ontologies (EMMO, BattINFO)
{| class="wikitable"
|Filename
|Description
|Format
|Usage
|-
|metadata.jsonld
|JSON-LD metadata record describing the dataset, equipment, and parameters.
|JSON
|Enables integration into semantic web and FAIR data workflows.
|-
|metadata.html
|HTML page that embeds the JSON-LD metadata for machine agents
|HTML
|Helps web crawlers to find and process the metadata
|}

== Scripts and Environment ==
{| class="wikitable"
|Filename
|Description
|Format
|Usage
|-
|requirements.txt
|List of Python dependencies used for plotting and conversion.
|TXT
|Reproducible setup of Python environment with <code>pip install -r requirements.txt</code> .
|}

= Human Readable Tables =

== Cell ==
{| class="wikitable"
|Property
|Value
|-
|Format
|Coin Cell
|-
|Type
|[[:Category:OSWb61b96acf2f44b7482d5565fe3a2d88b|CR2032]]
|-
|Manufacturer
|[[Item:OSW249dcc24b5ab4916a8e5f813fe44cb44|VARTA]]
|-
|Nominal Capacity  /  mA h
|220
|-
|Chemistry
|Li-MnO2
|}

== Test Protocol ==
{| class="wikitable"
|Property
|Value
|-
|Mode
|Discharging
|-
|Current  /  mA
|11
|-
|Lower Voltage Limit  /  V
|1.5
|-
|Temperature  /  °C
|25
|}

== Test Equipment ==
{| class="wikitable"
|Property
|Value
|-
|Manufacturer
|[[Item:OSW4956eab590f649c18139b1f292cc836f|BioLogic]]
|-
|Type
|Battery Cycler
|-
|Notes
|Standard discharge test using constant current
|}

= Licensing =
This dataset is licensed under Creative Commons Attribution 4.0 International (CC BY 4.0), allowing sharing and reuse with proper attribution.

= Contact Information =
For questions or further assistance, please contact [[Item:OSW72e733f317ef4cf9b8ca53e906c9acb9|Simon Clark]] at simon.clark@sintef.no.

= References =
This dataset is part of SINTEF's ongoing work on battery digitalization. If used in publications or derivative works, please cite:  

Simon Clark, Nils Peter Wagner (2025). Discharging Time Series of a CR2032 Battery at 11 mA. <nowiki>https://doi.org/10.5281/zenodo.15069341</nowiki>