Electrochemistry Application — Bimetallic MOFs with tunable morphology: Synthesis and enhanced lithium storage properties

Measurement evidence

Electrochemistry Application

Bimetallic MOFs with tunable morphology: Synthesis and enhanced lithium storage properties · He S., Li Z., Wang J. · Journal of Solid State Chemistry · 2022 · 122726

7 measurement groups · 26 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

Charge-discharge voltage profiles

Co-Ni-MOF 1:1/carbon black/PVDF electrode · Electrode

Co-Ni-MOF 1:1 electrode, cycles 1, 2, 5, 10, 20 and 50 at 100 mA g-1.

Geometry
CR2032 lithium half-cell
Context
composite electrode
Measurement source
5 · 3. Results and discussion · Fig. 4d
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Initial coulombic efficiency64.9%Text
Exact Reported
5 · 3. Results and discussion · Fig. 4d
Initial charge capacity1360.8 mA h g-1Text
Exact Reported
5 · 3. Results and discussion · Fig. 4d
Initial discharge capacity2096.1 mA h g-1Text
Exact Reported
5 · 3. Results and discussion · Fig. 4d

dQ/dV differential capacity analysis

Co-Ni-MOF 1:1/carbon black/PVDF electrode · Electrode

First cycle of Co-Ni-MOF 1:1 electrode.

Geometry
CR2032 lithium half-cell
Context
composite electrode
Measurement source
5 · 3. Results and discussion · Fig. 4e
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
dQ/dV stepwise reduction and ligand reaction peaks1.11, 0.74 and 0.035 V cathodic peaks ascribed to stepwise reduction of Co2+ to Co0, Ni2+ to Ni0 and reaction on unsaturated carbons of BDC ligandsaround for 1.11, 0.74 and 0.035 VText
Approximate
5 · 3. Results and discussion · Fig. 4e
dQ/dV cathodic SEI peak1.17 V cathodic peak belongs to SEI layer formationText
Exact Reported
5 · 3. Results and discussion · Fig. 4e

Galvanostatic charge-discharge cycling, LAND CT2001A

MOF/carbon black/PVDF electrode series · Electrode

CR2032 lithium half-cells, 0.01-3 V vs Li+/Li, 100 mA g-1, MOF/carbon black/PVDF electrodes.

Atmosphere
Ar-filled glovebox for cell assembly
Geometry
CR2032 coin cell with Li foil counter/reference electrode, Celgard 2400 separator, 1 M LiPF6 in EC/EMC/DMC
Context
composite electrode; pristine Ni-MOF electrode used as control
Measurement source
2 · 2.3. Electrochemical measurements · Fig. 4a
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Co-Ni-MOF 1:1 reversible discharge capacity after 100 cyclesMarked as a best value within this paper800 mA h g-1 after 100 cycles at 100 mA g-1Text
Rounded Reported
1 · Abstract · Fig. 4a
Co-Ni-MOF 2:1 discharge capacity after 100 cyclesCo-Ni-MOF electrodes with molar ratio 2:1 and 1:1 reach 800 mA h g-1 after 100 cyclesText
Rounded Reported
5 · 3. Results and discussion · Fig. 4a
Ni-MOF control capacity after 100 cycles302 mA h g-1Text
Exact Reported
5 · 3. Results and discussion · Fig. 4a
Co-Ni-MOF 1:1 capacity retention after 100 cyclesMarked as a best value within this paper98% specific capacity retention after 100 cyclesText
Rounded Reported
1 · Abstract · Fig. 4a

High-current cycling

Co-Ni-MOF 1:1/carbon black/PVDF electrode · Electrode

Co-Ni-MOF 1:1 electrode cycled for 500 cycles at 300, 500 and 1000 mA g-1 in Fig. 4f.

Geometry
CR2032 lithium half-cell
Context
composite electrode
Measurement source
5 · 3. Results and discussion · Fig. 4f
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Approximate capacity after 500 cycles at 1000 mA g-1about 110 mA h g-1 after 500 cycles at 1000 mA g-1, read from Fig. 4frough visual estimate, +/-40 mA h g-1Visual Estimate
Approximate
4 · Figure · Fig. 4f
Approximate capacity after 500 cycles at 300 mA g-1about 220 mA h g-1 after 500 cycles at 300 mA g-1, read from Fig. 4frough visual estimate, +/-50 mA h g-1Visual Estimate
Approximate
4 · Figure · Fig. 4f

Post-cycling EIS and TEM

Co-Ni-MOF 1:1/carbon black/PVDF electrode · Electrode

Co-Ni-MOF 1:1 electrode before and after 100 cycles.

Geometry
CR2032 lithium half-cell electrode
Context
cycled composite electrode
Measurement source
5 · 3. Results and discussion · Fig. 5
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Post-cycling impedance increaseCharge-transfer and diffusion resistance increase after cycling.Text
Qualitative
5 · 3. Results and discussion · Fig. 5a
Post-cycling morphology changeMOF microspheres were broken into fine particles after cycling.Text
Qualitative
5 · 3. Results and discussion · Fig. 5b

Rate capability by GCD

Co-Ni-MOF 1:1/carbon black/PVDF electrode · Electrode

Co-Ni-MOF 1:1 electrode cycled at 100, 200, 300, 500 and 1000 mA g-1, then returned to 100 mA g-1.

Geometry
CR2032 lithium half-cell
Context
composite electrode
Measurement source
5 · 3. Results and discussion · Fig. 4c
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Co-Ni-MOF 1:1 rate capacity at 100 mA g-1Marked as a best value within this paper890 mA h g-1 at 100 mA g-1Text
Exact Reported
5 · 3. Results and discussion · Fig. 4c
Co-Ni-MOF 1:1 rate capacity at 1000 mA g-1380 mA h g-1 at 1000 mA g-1Text
Exact Reported
1 · Abstract · Fig. 4c
Co-Ni-MOF 1:1 rate capacity at 200 mA g-1770 mA h g-1 at 200 mA g-1Text
Exact Reported
5 · 3. Results and discussion · Fig. 4c
Co-Ni-MOF 1:1 rate capacity at 300 mA g-1700 mA h g-1 at 300 mA g-1Text
Exact Reported
5 · 3. Results and discussion · Fig. 4c
Co-Ni-MOF 1:1 rate capacity at 500 mA g-1600 mA h g-1 at 500 mA g-1Text
Exact Reported
1 · Abstract · Fig. 4c
Co-Ni-MOF 1:1 recovered capacity when returned to 100 mA g-1860 mA h g-1 after current lowered to 100 mA g-1Text
Exact Reported
5 · 3. Results and discussion · Fig. 4c

Supplementary Table S1 literature-comparison summary of lithium-ion battery anode performance

Co-Ni-MOF 1:1/carbon black/PVDF electrode · Electrode

Co-Ni-MOF 'This work' row in SI Table S1; voltage window 0.01-3 V vs Li/Li+, 100-cycle performance, conversion/intercalation mechanism.

Geometry
Lithium-ion battery anode comparison table; electrode fabrication details in main text.
Context
composite electrode; SI summary row for this work
Measurement source
2 · Table S1 · Table S1
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
SI Table S1 Co-Ni-MOF capacity at 100 mA g-1Marked as a best value within this paper800/100SI Table
Exact Reported
2 · Table S1 · Table S1
SI Table S1 Co-Ni-MOF capacity at 1000 mA g-1200/1000SI Table
Exact Reported
2 · Table S1 · Table S1
SI Table S1 Co-Ni-MOF capacity at 300 mA g-1541/300SI Table
Exact Reported
2 · Table S1 · Table S1
SI Table S1 Co-Ni-MOF capacity at 500 mA g-1371/500SI Table
Exact Reported
2 · Table S1 · Table S1
SI Table S1 cycling performance entry100 cyclesSI Table
Exact Reported
2 · Table S1 · Table S1
SI Table S1 lithium storage mechanism entryConversion/IntercalationSI Table
Qualitative
2 · Table S1 · Table S1
SI Table S1 voltage window for Co-Ni-MOF anode0.01-3 V vs Li/Li+rangeSI Table
Range
2 · Table S1 · Table S1