Electrochemistry Application — Carbon-incorporated Janus-type Ni2P/Ni hollow spheres for high performance hybrid supercapacitors

3 measurement groups · 19 results

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

cyclic voltammetry

Voltammetry

NP-150 working electrode · Electrode

CV of NP-150 electrode in 2 M KOH at scan rates 2-20 mV s-1; comparison CVs of NP-50/NP-150/NP-250/NP-350 at 10 mV s-1 in SI Fig. S5a.

Geometry: three-electrode cell
Context: Ni2P/Ni/C working electrode
Measurement source: p006 / journal page 19059 · Results and discussion · Fig. 4b, Fig. S5a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
NP-150 CV redox peaks	pair of redox peaks corresponding to reversible Ni2+/Ni3+ faradaic reaction	—	—	Text Qualitative	p006 / journal page 19059 · Results and discussion · Fig. 4b

galvanostatic charge-discharge

Galvanostatic cycling

NP-150 working electrode · Electrode

Three-electrode system in 2 M KOH aqueous electrolyte; NP-series active material/Super-P/PVDF working electrodes on graphite; capacitance calculated from discharge.

Geometry: three-electrode cell
Context: Ni2P/Ni/C positive electrode material comparison
Measurement source: p005-p006 / journal pages 19058-19059 · Results and discussion · Fig. 4c-d, Fig. S5b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
NP-150 specific capacitance at 10 A g-1	932 F g-1 at 10 A g-1	932 F g-1	—	Text Exact Reported	p006 / journal page 19059 · Results and discussion · Fig. 4c
NP-150 specific capacitance at 1 A g-1Marked as a best value within this paper	1449 F g-1 at 1 A g-1	1449 F g-1	—	Text Exact Reported	p006 / journal page 19059 · Results and discussion · Fig. 4c, Table S2
NP-150 specific capacitance at 2 A g-1	1302 F g-1 at 2 A g-1	1302 F g-1	—	Text Exact Reported	p006 / journal page 19059 · Results and discussion · Fig. 4c
NP-150 specific capacitance at 5 A g-1	1106 F g-1 at 5 A g-1	1106 F g-1	—	Text Exact Reported	p006 / journal page 19059 · Results and discussion · Fig. 4c
NP-150 capacitance retention from 1 to 10 A g-1	64.32%	64.32 %	—	Text Exact Reported	p006 / journal page 19059 · Results and discussion · Fig. 4c
NP-250 specific capacitance at 10 A g-1	about 615 F g-1 at 10 A g-1	615 F g-1	—	Figure Axis Approximate	p005 / journal page 19058 · Results and discussion · Fig. 4d
NP-250 specific capacitance at 1 A g-1	about 1110 F g-1 at 1 A g-1	1110 F g-1	—	Figure Axis Approximate	p005 / journal page 19058 · Results and discussion · Fig. 4d
NP-350 specific capacitance at 10 A g-1	about 500 F g-1 at 10 A g-1	500 F g-1	—	Figure Axis Approximate	p005 / journal page 19058 · Results and discussion · Fig. 4d
NP-350 specific capacitance at 1 A g-1	about 890 F g-1 at 1 A g-1	890 F g-1	—	Figure Axis Approximate	p005 / journal page 19058 · Results and discussion · Fig. 4d
NP-50 specific capacitance at 10 A g-1	about 310 F g-1 at 10 A g-1	310 F g-1	—	Figure Axis Approximate	p005 / journal page 19058 · Results and discussion · Fig. 4d
NP-50 specific capacitance at 1 A g-1	about 850 F g-1 at 1 A g-1	850 F g-1	—	Figure Axis Approximate	p005 / journal page 19058 · Results and discussion · Fig. 4d

two-electrode HSC CV/GCD/Ragone/cycling

Voltammetry Galvanostatic cycling

NP-150//AC HSC device · Electrode

NP-150 positive electrode and active carbon negative electrode in 2.0 M KOH; CV voltage windows 0.8-1.8 V and GCD/device capacitance, energy density and cycling measured.

Geometry: two-electrode hybrid supercapacitor
Context: application device based on optimised MOF-derived NP-150
Measurement source: p006-p007 / journal pages 19059-19060 · Results and discussion · Fig. 5, Fig. 6, Table 1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
NP-150//AC HSC specific capacitance at 10 A g-1	43.6 F g-1 at 10 A g-1	43.6 F g-1	—	Text Exact Reported	p006 / journal page 19059 · Results and discussion · Fig. 5e
NP-150//AC HSC specific capacitance at 1 A g-1Marked as a best value within this paper	117.6 F g-1 at 1 A g-1	117.6 F g-1	—	Text Exact Reported	p006 / journal page 19059 · Results and discussion · Fig. 5e
NP-150//AC HSC capacitance retention after cycling	99% after 5000 charge/discharge cycles at 7 A g-1	99 %	nearly/about	Text Approximate	p007 / journal page 19060 · Results and discussion · Fig. 5f, Fig. S7
NP-150//AC HSC energy density at 7000 W kg-1	11.82 W h kg-1 at 7000 W kg-1	11.82 W h kg-1	—	Text Exact Reported	p007 / journal page 19060 · Results and discussion · Fig. 6
NP-150//AC HSC energy density at 700 W kg-1Marked as a best value within this paper	32.02 W h kg-1 at 700 W kg-1	32.02 W h kg-1	—	Table Exact Reported	p007 / journal page 19060 · Results and discussion · Fig. 6, Table 1
Optimised HSC mass ratio m(NP-150)/m(AC)	0.538	0.538 m(NP-150)/m(AC)	—	Text Exact Reported	p006 / journal page 19059 · Results and discussion
HSC maximum tested voltage window	extended from 0.8 to 1.8 V	1.8 V	—	Text Exact Reported	p006 / journal page 19059 · Results and discussion · Fig. 5b, Fig. S6