This README_Supplementary_Data.txt file was generated on 2026-03-03 by Sri Sannihita Chavali (sri.chavali@tuhh.de) ------------------- GENERAL INFORMATION ------------------- Name: Sri Sannihita Chavali (ORCID: 0009-0008-7662-0974) Role/Function: Data Collector, Data Curator (main contact person) Institution: Institute of Technical Microbiology, Hamburg University of Technology Address: Kasernenstraße 12, 21073 Hamburg, Germany Email: sri.chavali@tuhh.de Name: Christiane Roller (ORCID: 0009-0006-3350-3378) Role/Function: Data Collector Institution: Institute of Polymer Composites, Hamburg University of Technology Address: Denikestraße 15, 21073 Hamburg, Germany Name: Jonas Lumma (ORCID: 0009-0007-6182-423X) Role/Function: Contributing Researcher Institution: Department of Material Science, Functional Nanomaterials, Kiel University Address: Christian-Alberechts-Platz 4, 24118 Kiel, Germany Name: Morten Möller Role/Function: Contributing Researcher Institution: Department of Material Science, Functional Nanomaterials, Kiel University Address: Christian-Alberechts-Platz 4, 24118 Kiel, Germany Name: Rainer Adelung (ORCID: 0000-0002-2617-678X Role/Function: Contributing Researcher IInstitution: Department of Material Science, Functional Nanomaterials, Kiel University Address: Christian-Alberechts-Platz 4, 24118 Kiel, Germany Name: Miriam Edel (ORCID: 0009-0008-6283-0006 ) Role/Function: Contributing Researcher Institution: Institute of Technical Microbiology, Hamburg University of Technology Address: Kasernenstraße 12, 21073 Hamburg, Germany Name: Bodo Fiedler (ORCID: 0000-0002-2734-1353) Role/Function: Principal Investigator Institution: Institute of Polymers Composites, University of Hamburg Address: Denickestraße 15, 21073 Hamburg, Germany Name: Johannes Gescher (ORCID: 0000-0002-1625-8810) Role/Function: Principal Investigator (alternative contact person) Institution: Institute of Technical Microbiology, Hamburg University of Technology Address: Kasernenstraße 12, 21073 Hamburg, Germany Email: johannes.gescher@tuhh.de Date of data collection: December 2024 - February 2026 Location of data collection: Institute of Technical Microbiology, Hamburg University of Technology, Hamburg, Germany Funding: This project is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – SFB 1615 – 503850735. --------------------------- SHARING/ACCESS INFORMATION --------------------------- Title of data set: "Aerographite vs. Graphite: Investigating the Role of Electrode Architecture in H₂-Mediated Electroautotrophic Biofilms" DOI of dataset: https://doi.org/10.15480/882.16822 Handle: https://hdl.handle.net/11420/61885 Keywords: Aerographite, biofilms, porous electrodes, bioelectrochemical system, smart reactors --------------------- DATA & FILE OVERVIEW --------------------- ### 01_Aerographite-Geometries.csv (creation date: 04.03.2026, version: 01) - **Description:** List of Aerographite sample geometries used in the study. - **Columns:** - Aerographite: Sample ID of the electrode sample - Mass: mass of electrode sample - Length: length of electrode sample - Width: width of electrode sample - Height: height of electrode sample - Volume: volume of electrode sample - Density: density of electrode sample ### 02_Electrical-Conductivity.csv (creation date: 04.03.2026, version: 01) - **Description:** List of electrical conductivity measurements reported in the study. - **Columns:** - Sample ID: Sample ID of the electrode sample - Height: height of electrode sample - Width: width of electrode sample - Length: length of electrode sample - Area: area of electrode sample - Resistance: resistance of electrode sample - Conductivity: conductivity of electrode sample - Porosity: porosity of electrode sample - Density: density of electrode sample ### 03_TGA_Aerographite-Q3LC27.txt (creation date: 04.03.2026, version: 01) - **Description:** Thermogravimetric analysis of Aerographite sample. ### 04_TGA_Graphite.txt (creation date: 04.03.2026, version: 01) - **Description:** Thermogravimetric analysis of Graphite electrode. ### 05_Aerographite_Electroactive_Surface_Area_CV_Q2LC3.csv (creation date: 04.03.2026, version: 01) - **Description:** Cyclic voltammetry measurements for Aerographite samples. - **Columns:** - Potential: The potential applied across the system. - Current: The resulting current measured. - Potential: The potential applied across the system. - Current: The resulting current measured. - Potential: The potential applied across the system. - Current: The resulting current measured. ### 06_Aerographite_Electroactive_Surface_Area_CV_Q3LC9.csv (creation date: 04.03.2026, version: 01) - **Description:** Cyclic voltammetry measurements for Aerographite samples. - **Columns:** - Potential: The potential applied across the system. - Current: The resulting current measured. - Potential: The potential applied across the system. - Current: The resulting current measured. - Potential: The potential applied across the system. - Current: The resulting current measured. ### 07_Aerographite_Electroactive_Surface_Area_CV_Q3LC15.csv (creation date: 04.03.2026, version: 01) - **Description:** Cyclic voltammetry measurements for Aerographite samples. - **Columns:** - Potential: The potential applied across the system. - Current: The resulting current measured. - Potential: The potential applied across the system. - Current: The resulting current measured. - Potential: The potential applied across the system. - Current: The resulting current measured. ### 08_Graphite_Biovolume_Growth.csv (creation date: 04.03.2026, version: 01) - **Description:** Progression of biovolume on the cathode over the course of the experiment. - **Columns:** - Time : Time of the experiment in days. - Biovolume normalised: The normalized biovolume im µL over the area of growth in cm2. - mm3/mm2: The normalised biovolume in mm3/mm2. - Biovolume normalised: The normalized biovolume im µL over the area of growth in cm2. - mm3/mm2: The normalised biovolume in mm3/mm2. - Biovolume normalised: The normalized biovolume im µL over the area of growth in cm2. - mm3/mm2: The normalised biovolume in mm3/mm2. - Avg.: The normalized biovolume over time. - Std Dev: Standard deviation of the biovolume. ### 09_Aerographite_Biovolume_Growth.csv (creation date: 04.03.2026, version: 01) - **Description:** Progression of biovolume on the cathode over the course of the experiment. - **Columns:** - Time : Time of the experiment in days. - White pixels: amount of white pixels representing the electrode surface and biofilm. - Baseline corrected: subtraction of the amount of white pixels accounting fort he electrode surface. - Biovolume: number of white pixels multiplied by volume of each in mm3. - Normalised biovolume: The normalized biovolume in mm3/mm2. - White pixels: amount of white pixels representing the electrode surface and biofilm. - Baseline corrected: subtraction of the amount of white pixels accounting fort he electrode surface. - Biovolume: number of white pixels multiplied by volume of each in mm3. - Normalised biovolume: The normalized biovolume in mm3/mm2. - White pixels: amount of white pixels representing the electrode surface and biofilm. - Baseline corrected: subtraction of the amount of white pixels accounting fort he electrode surface. - Biovolume: number of white pixels multiplied by volume of each in mm3. - Normalised biovolume: The normalized biovolume in mm3/mm2. - Avg.: The normalized biovolume over time. - Std Dev: Standard deviation of the biovolume. ### 10_SEM (creation date: 04.03.2026, version: 01) - **Description:** SEM images of Aerographite. - 10_SEM_20240828_Q1LC1_05.tif - 10_SEM_20240828_Q1LC106.tif - 10_SEM_20260212_BFaufAG-Q3LC22-sid049.tif - 10_SEM_20260212_BFaufAG-Q3LC22-sid050.tif - 10_SEM_20260212_BFaufAG-Q3LC22-top005.tif - 10_SEM_20260212_BFaufAG-Q3LC22-top016.tif - 10_SEM_20260212_BFaufAG-Q3LC22-top026.tif - 10_SEM_20260212_BFaufAG-Q3LC22-top028.tif - 10_SEM_20260212_BFaufAG-Q3LC22-top032.tif - 10_SEM_20260212_BFaufAG-Q3LC22-top034.tif - 10_SEM_20260212_BFaufAG-Q3LC22-top036.tif ### 11_Tetrapodal_dimensions_from_SEM.csv (creation date: 04.03.2026, version: 01) - **Description:** Dimensions of tetrapodal arm of Aerographite from SEM image. ----------------- RESEARCH CONTEXT ----------------- This study investigates biofilm development by 𝘊𝘶𝘱𝘳𝘪𝘢𝘷𝘪𝘥𝘶𝘴 𝘯𝘦𝘤𝘢𝘵𝘰𝘳 H16 on Aerographite, an ultralow-density carbon foam (3-6 mg cm⁻³, porosity >99%) with a hierarchical tetrapodal pore network, as a cathode material in microfluidic bioelectrochemical systems and compares it to plain graphite.