Pulsed Current Anion Sensor Data for Multiple Nonspecific Ion Selective Electrodes - Mixed Ion Responses

Dataset Overview

This dataset contains raw mixed-ion electrochemical time-series data for PAN, PVA, and PVC electrode sets.

The data support the mixed-ion RC modeling workflow in which total resistance and capacitance were modeled using scaled parallel-combination assumptions:

• 1/R_T = alpha * (1/R_NO3 + 1/R_Cl + 1/R_HPO4)
• C_T = beta * (C_NO3 + C_Cl + C_HPO4)

where alpha and beta were fit from experimentally measured mixed-ion responses.

Experimental Scope Represented

• Polymers: PAN, PVA, PVC
• Electrodes: 01 to 03 per polymer
• Mixed-ion condition folders: mix_1 to mix_6 (NO3/Cl/HPO4 combinations)
• Current protocol files per condition: 11 files
• 1 OCV file (step_index=1)
• 10 CP files (step_index=2..11, nominal 0.1 to 100 uA)

Data Organization

• Format: Parquet (columnar)
• Rows: 4,595,153
• Columns: 27
• Row unit: one raw timepoint from one .mpr file

Identifier and condition columns

• record_id: unique row id
• file_id: anonymized file-level id (deterministic hash of relative source file path)
• polymer_name, electrode_name
• mix_id (mix_1..mix_6)
• mix_folder_label (original folder label)
• Ca_M, Cb_M, Cg_M: concentration fields in molar units
• pCa, pCb, pCg: -log10 transformed concentrations

Protocol columns

• step_index: 1..11
• step_type: OCV or CP
• nominal_current_uA: nominal current for CP steps (0.1, 0.2, 0.5, 1, 2, 5, 10, 20, 50, 100)

Raw signal columns

• time_s
• potential_V
• analog_in1_V
• control_mA, I_mA
• dQ_C, QminusQo_C
• Q_charge_discharge_mAh
• half_cycle, Ns, flags, I_range

Concentration Combinations Present

The dataset contains six mixed-ion concentration sets (NO3, Cl, HPO4):

1. (3e-2, 3e-6, 6e-4)
2. (2e-4, 1e-2, 3e-6)
3. (3e-6, 5e-4, 4e-2)
4. (4e-2, 8e-2, 3e-2)
5. (1e-4, 7e-4, 8e-4)
6. (6e-6, 3e-6, 4e-6)

Coverage Note

All polymer/electrode combinations include mix_1, mix_2, mix_3, mix_5, and mix_6.  PAN03 does not include mix_4 data.

Public-Release Notes

• Absolute local/network file paths are not included.
• file_id enables file-level grouping and reproducible analysis without exposing source path strings.