﻿This readme file was generated on [2025-12-04] by [Grainne Gilleece]


GENERAL INFORMATION

Title of Dataset: Impact of Graphene Quantum Dot Edge Shapes on High-Performance Energy Storage Devices

Author/Principal Investigator Information
Name: Grainne Gilleece
ORCID:N/A
Institution: Durham University
Address: Department of Engineering, Durham University, Lower Mountjoy, South Road, Durham, DH1 3LE
Email: grainne.gilleece@duram.ac.uk

Author/Associate or Co-investigator Information
Name: Natasha Shirshova
ORCID:0000-0002-0546-6278
Institution: Durham University
Address: Department of Engineering, Durham University, Lower Mountjoy, South Road, Durham, DH1 3LE
Email: natasha.shirshova@durham.ac.uk


Date of data collection: 11/2022 - 08/2025 

Geographic location of data collection: Durham

Information about funding sources that supported the collection of the data: 

This work was supported by the Engineering and Physical Sciences Research Council [grant EP/W524426/1; DTP 2224 
Durham University].


SHARING/ACCESS INFORMATION

Licenses/restrictions placed on the data: CC-BY

Links to publications that cite or use the data: N/A

Links to other publicly accessible locations of the data: N/A 

Links/relationships to ancillary data sets: N/A 

Was data derived from another source? No

Recommended citation for this dataset: Gilleece, G (2025): Impact of Graphene Quantum Dot Edge Shapes on High-Performance Energy Storage Devices. Durham University. (dataset).  DOI:  https://doi.org/10.15128/r22n49t1726 


DATA & FILE OVERVIEW

File List: G Gilleece JMCA Data.zip containing AC UV Vis pH Changes, ac vs zz gqd cv, EC1 XRD, edl graphs, HT1 XRD, HT1-4 UV Vis, Raman Data, ZZ GQDs CV, ZZ UV Vis pH Changes

Relationship between files, if important: 

Additional related data collected that was not included in the current data package: 

Are there multiple versions of the dataset? No
If yes, name of file(s) that was updated: 
Why was the file updated? 
When was the file updated? 


METHODOLOGICAL INFORMATION

Description of methods used for collection/generation of data: Synthesis of N-GQDs (HT1-4): adaptation of doi: 10.1021/acsomega.9b01612
Synthesis of N-GQDs (EC1) via electrochemical cutting (VersaStat 3Potentiostat Galvanostat, 10 V chronoamperometry for 1 hr).
UV-Vis (Shimadzu UV-Vis UV 1800, 190-1100 nm scan range, scans taken with 1 cm path length and measured in a range of 190-700 nm).
TEM (JEOL JEM-2100, measured on 200 mesh carbon-coated copper grids, 200 keV).
XRD (Bruker D8 Advance, monochromatic CuKα radiation, 10 - 90° (2θ) at 40 kV and 35 mA with a 0.02 °/s scan rate).
Raman spectra (Horiba LabRAM HR Evolution, confocal, 532 nm, 100-300 cm-1, acquisition time 800s).
Electrophoretic deposition (2 electrode set up; carbon fibres as working electrode, platinum electrode as counter electrode, N-GQD solution as electrolyte. 10 V applied to the cell (Keithley 2200) for times between 10 mins – 1 hour).
Electrochemical measurements (CV, EIS, Mott Schottky) were carried out in a 3-electrode half-cell configuration; carbon fibers as the working electrode, a platinum rod as a counter electrode, aqueous Ag/AgCl electrode, 1M H2SO4 electrolyte (VersaSTAT 3 Potentiostat Galvanostat).


Methods for processing the data: Raman spectra processed using Lorentzian fitting

Instrument- or software-specific information needed to interpret the data: Instruments listed above, .opju files can be opened in OriginLab Software

Standards and calibration information, if appropriate: N/A

Environmental/experimental conditions: All physical/ electrochemical characterization conducted at room temperature under atmospheric pressure (other than TEM, conducted under vacuum). 

Describe any quality-assurance procedures performed on the data: All experiments repeated 2-6 times

People involved with sample collection, processing, analysis and/or submission: Grainne Gilleece


DATA-SPECIFIC INFORMATION FOR: [AC UV Vis pH Changes]

Number of variables: two per data set - dependent = wavelength (nm), independent = absorbance (au) (3 UV Vis Spectra in file)

Number of cases/rows: pH1 550 rows, pH7 543 rows, pH9 542 rows

Specialized formats or other abbreviations used: Abs = absorbance


DATA-SPECIFIC INFORMATION FOR: [ac v zz gqd cv]

Number of variables: two per data set - dependent = potential (V), independent = current density (A/g) (3 cyclic voltammograms in file)

Number of cases/rows: CF with deposited HT1: 1997, CF with deposited EC1: 1972, unmodified CF: 1999

Variable List: 1st, 3rd, 5th columns = Potential (V), 2nd, 4th and 6th columns = current density (A/g). 1st 2 columns = CF with deposited HT1, 2nd 2 columns = CF with deposited EC1, 3rd 2 columns = unmodified CF (all cyclic voltammograms)

Specialized formats or other abbreviations used: CF = carbon fibres, CV = cyclic voltammograms, ZZ = zigzag edge graphene quantum dots, AC = armchair edge graphene quantum dots 


DATA-SPECIFIC INFORMATION FOR: [EC1 XRD]

Number of variables: 2 - dependent = intensity (au), independent = 2 theta (degrees)

Number of cases/rows: 4103

Specialized formats or other abbreviations used: 2 theta = scattering angle between incident x ray beam and refracted beam
 

DATA-SPECIFIC INFORMATION FOR: [edl graph]

Number of variables: two per data set - dependent = potential (V), independent = current (A) (book two is a focussed area of book 1)

Number of cases/rows: book 1 = 2064, book 2 = 1603

Specialized formats or other abbreviations used: book 2 is the electrical double layer (edl) section of book 1


DATA-SPECIFIC INFORMATION FOR: [HT1 XRD]

Number of variables: 2 - dependent = intensity (au), independent = 2 theta (degrees)

Number of cases/rows: 4103

Specialized formats or other abbreviations used: 2 theta = scattering angle between incident x ray beam and refracted beam


DATA-SPECIFIC INFORMATION FOR: [HT1-4 UV Vis]

Number of variables: two per data set - dependent = wavelength (nm), independent = absorbance (au) (4 UV Vis Spectra in file)

Number of cases/rows: 4 spectra, 603 rows each

Specialized formats or other abbreviations used: Abs = absorbance


DATA-SPECIFIC INFORMATION FOR: [Raman Data]

Number of variables: two per data set - dependent = Raman Shift/ cm-1, independent = Intensity (au) (2 spectra in file)

Number of cases/rows: 2 spectra, 1000 rows each

Variable List: 1st data set = raman spectrum of HT1, 2nd data set = raman spectrum of EC1

Specialized formats or other abbreviations used: ZZ = zigzag edge graphene quantum dots, AC = armchair edge graphene quantum dots 


DATA-SPECIFIC INFORMATION FOR: [ZZ GQDs CV]

Number of variables: two per data set - dependent = potential (V), independent = current density (A/g) (3 cyclic voltammograms in file)

Number of cases/rows: CF/ HT1: 1997, Pretreated only CFs: 1999, unmodified CFs: 1999

Variable List: 1st, 3rd, 5th columns = Potential (V), 2nd, 4th and 6th columns = current density (A/g). 1st 2 columns = CF/ HT1, 2nd 2 columns = Pretreated only CFs, 3rd 2 columns = unmodified CF (all cyclic voltammograms)

Specialized formats or other abbreviations used: CF = carbon fibres, CV = cyclic voltammograms, HT1 = sample name (5 nm hydrothermally synthesized N-GQDs)

DATA-SPECIFIC INFORMATION FOR: [ZZ UV Vis pH Changes]

Number of variables: two per data set - dependent = wavelength (nm), independent = absorbance (au) (3 UV Vis Spectra in file)

Number of cases/rows: pH1 550 rows, pH7 542 rows, pH9 603 rows

Specialized formats or other abbreviations used: Abs = absorbance



