Data underpinning article "Investigating the influence of synthesis route on the crystallinity and rate capability of niobium pentoxide for energy storage" 
by Evangeline C. Wheeler-Jones, Melanie J. Loveridge and Richard I. Walton

All data are Text format and are labelled according to the specific samples in the figures in the paper and supplementary information.

Fig 2 – As XRD: As-synthesised material XRD pattern.  Two-columns: diffraction angle (2theta) and intensity.
Fig 2 – Mono XRD: Monoclinic material XRD pattern.  Two-columns: diffraction angle (2theta) and intensity.
Fig 2 – Ortho XRD: Orthorhombic material XRD pattern.  Two-columns: diffraction angle (2theta) and intensity.
Fig 3 – TEM counts: Particle widths of all samples in nm. Three-columns: As-synthesised material, Orthorhombic material, and Monoclinic material.
Fig 4 – As: As-synthesised material cycling data at 1C. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 4 – As-rate: As-synthesised material rate sweep. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 4 – Mono: Monoclinic Material cycling data at 1C. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1)
Fig 4 – Mono-rate: Monoclinic material rate sweep. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 4 – Ortho: Orthorhombic Material cycling data at 1C. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1)
Fig 4 – Ortho-rate: Orthorhombic material rate sweep. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 5 – Bottom: As-synthesised material charge profiles. Six columns: Delithiation Capacity (mAhg-1), Ecell (V), for rates C/5, 1C and 20C.
Fig 5-top-20C: As-synthesised material cycling data at 20C. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 5-top-C5: As-synthesised material cycling data at C/5. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 6 – Bottom: Orthorhombic material charge profiles. Six columns: Delithiation Capacity (mAhg-1), Ecell (V), for rates C/5, 1C and 20C.
Fig 6-top-20C: Orthorhombic material cycling data at 20C. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 6-top-C5: Orthorhombic material cycling data at C/5. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 7 – Bottom: Monoclinic material charge profiles. Six columns: Delithiation Capacity (mAhg-1), Ecell (V), for rates C/5, 1C and 20C.
Fig 7-top-20C: Monoclinic material cycling data at 20C. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 7-top-C5: Monoclinic material cycling data at C/5. Four- columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1).
Fig 8-As- CV: Cyclic Voltammetry of As-synthesised material. 20 columns: Voltage (V), Current (Ag-1) for Scan rate (mVs-1) 1, 2, 3, 4, 5, 10, 25, 50, 75, 100.
Fig 8-Mono- CV: Cyclic Voltammetry of Monoclinic material. 20 columns: Voltage (V), Current (Ag-1) for Scan rate (mVs-1) 1, 2, 3, 4, 5, 10, 25, 50, 75, 100.
Fig 8-Ortho- CV: Cyclic Voltammetry of Orthorhombic material. 20 columns: Voltage (V), Current (Ag-1) for Scan rate (mVs-1) 1, 2, 3, 4, 5, 10, 25, 50, 75, 100.
Fig 9 -SPEIS- As: SPEIS of As-synthesised material. 20 columns: Ewe (V), |Z|(Ohm) at frequencies (Hz) 1, 10, 100, 1000, 10 000 for lithiation and delithiation.
Fig 9 -SPEIS- Mono: SPEIS of Monoclinic material. 20 columns: Ewe (V), |Z|(Ohm) at frequencies (Hz) 1, 10, 100, 1000, 10 000 for lithiation and delithiation.
Fig 9 -SPEIS- Ortho: SPEIS of Orthorhombic material. 20 columns: Ewe (V), |Z|(Ohm) at frequencies (Hz) 1, 10, 100, 1000, 10 000 for lithiation and delithiation.
Fig S2 – Isotherm: BET isotherm for all materials. 6 columns: Relative pressure (p/p0), Quantity Adsorbed (cm3g-1) for As-synthesised, Orthorhombic and Monoclinic. 
Fig S2 – Poredist: Pore distribution for all materials. 6 columns: Pore width (Å), log pore volume (cm3g-1) for As-synthesised, Orthorhombic and Monoclinic. 
Fig S3 – Cycling: As-synthesised material cycling data at 1C. 12 columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1) for 0.25-3.0, 0.25-2.0 and 0.9-2.0 V.
Fig S3 – Inset: As-synthesised material differential capacity profiles. Six columns: Delithiation Capacity (mAhg-1), Ecell (V), for cycles 1, 10 and 100 for 0.25-3.0, 0.25-2.0 and 0.9-2.0 V.
Fig S4 – Cycling: Orthorhombic material cycling data at 1C. 12 columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1) for 0.25-3.0, 0.25-2.0 and 0.9-2.0 V.
Fig S4 – Inset: Orthorhombic material differential capacity profiles. Six columns: Delithiation Capacity (mAhg-1), Ecell (V), for cycles 1, 10 and 100 for 0.25-3.0, 0.25-2.0 and 0.9-2.0
Fig S5 – Cycling: Monoclinic material cycling data at 1C. 12 columns: Cycle Number, Delithiation Capacity (mAhg-1), Cycle Number, Lithiation Capacity (mAhg-1) for 0.25-3.0, 0.25-2.0 and 0.9-2.0 V.
Fig S5 – Inset: Monoclinic material differential capacity profiles. Six columns: Delithiation Capacity (mAhg-1), Ecell (V), for cycles 1, 10 and 100 for 0.25-3.0, 0.25-2.0 and 0.9-2.0
Fig S7 – EIS – As: EIS data for as-synthesised material. 8 columns: Z’ (ohm), Z” (ohm) for cycle 1, 10, 50 and 100.
Fig S7 – EIS – Mono: EIS data for Monoclinic material. 8 columns: Z’ (ohm), Z” (ohm) for cycle 1, 10, 50 and 100.
Fig S7 – EIS – Ortho: EIS data for Orthorhombic material. 8 columns: Z’ (ohm), Z” (ohm) for cycle 1, 10, 50 and 100.