Synthesis · Split-cell symmetric supercapacitor performance of bimetallic MOFs yolk-shell hierarchical microstructure

3 structured synthesis routes

Completeness describes how fully the route could be reconstructed from the main article and supporting information.

Complete recipeSource: SI

Route 1: Drop Cast

1.3 Electrochemical measurements

SolventsEthanol, 10 uL in electrode slurry; deionized water, ethanol and acetone for ultrasonic cleaning

AdditivesNafion binder, 2.5 uL

Atmospherenot reported

Temperature90

Time12 drying; 1 ultrasonic cleaning

Substrate orientationCarbon fabric discs, 12 mm diameter and 0.3 mm thickness

Work-upTwo pieces of carbon fabric were ultrasonically cleaned sequentially in DI water, ethanol and acetone for 1 h; active material/Nafion/ethanol slurry was covered on cleaned carbon cloth by drop casting

ActivationDried in an oven at 90 deg C for 12 h

Scalability contextSmall electrode discs; no scale-up data reported.

Show 6 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	as-synthesized Ni-Zn MOF active material	2.5 mg	1.3 Electrochemical measurements
Additive	Nafion	2.5 uL	1.3 Electrochemical measurements
Solvent	ethanol	10 uL in slurry; also used for cleaning	1.3 Electrochemical measurements
Solvent	deionized water	used for ultrasonic cleaning	1.3 Electrochemical measurements
Solvent	acetone	used for ultrasonic cleaning	1.3 Electrochemical measurements
Other	carbon fabric/carbon cloth	two discs, 12 mm diameter, 0.3 mm thickness	1.3 Electrochemical measurements

Complete recipeSource: Both

Route 2: Solvothermal

1-2 · 2.1 Synthesis of Ni-Zn MOF

Metal precursorsNickel(II) nitrate hexahydrate and zinc nitrate hexahydrate, 34.8 mg each

Linker precursorsBenzene-1,3,5-tricarboxylic acid (BTC, trimesic acid), 513 mg

SolventsDeionized water, DMF and ethanol in equal proportions, 70 mL each, total 210 mL

Atmospherenot reported

Temperature170; post-treatment 100

Time6; post-treatment 10

Work-upSolution A poured dropwise into solution B while stirring; mixture transferred to a Teflon autoclave; precipitate centrifuged at 9000 rpm and washed several times with deionized water and ethanol

ActivationMaintained/dried at 100 deg C for 10 h; atmosphere not reported

Scalability contextNo yield or scale-up data reported.

Show 6 structured reagent records

Role	Reagent	Amount / concentration	Source
Linker	Benzene-1,3,5-tricarboxylic acid (BTC); SI: Trimesic acid (C9H6O6), ALDRICH	513 mg dissolved in 130 mL of prepared solution	1-2 · 2.1 Synthesis of Ni-Zn MOF
Metal Source	nickel (II) nitrate hexahydrate; SI: Ni(NO3)2.6H2O, DAEJUNG	34.8 mg	1-2 · 2.1 Synthesis of Ni-Zn MOF
Metal Source	zinc nitrate hexahydrate; SI: Zn(NO3)2.6H2O, DAEJUNG	34.8 mg	1-2 · 2.1 Synthesis of Ni-Zn MOF
Solvent	deionized water; SI: DI water, Samchun, Korea	70 mL in 210 mL prepared solution; also used for washing	1-2 · 2.1 Synthesis of Ni-Zn MOF
Solvent	dimethylformamide (DMF), ALFA AESAR	70 mL in 210 mL prepared solution	1-2 · 2.1 Synthesis of Ni-Zn MOF
Solvent	ethanol, DAEJUNG	70 mL in 210 mL prepared solution; also used for washing	1-2 · 2.1 Synthesis of Ni-Zn MOF

Complete recipeSource: SI

Route 3: Other

1.3 Electrochemical measurements; 1.4 Preparation of PVA/KOH gel electrolyte

SolventsDeionized water for PVA/KOH electrolyte preparation

AdditivesPVA/KOH gel electrolyte; filter paper separator

Atmospherenot reported

Temperature90 for PVA dissolution; cooled to room temperature

Time1 h PVA dissolution; device test assembly time not reported

Substrate orientationTwo identical 12 mm Ni-Zn MOF/carbon-fabric electrodes in a split-cell symmetric configuration

Work-upPVA dissolved in 24 mL DI water at 90 deg C with vigorous stirring; KOH liquefied in 6 mL DI water and dropped into PVA solution until gel formed; two identical electrodes separated with filter paper

ActivationPVA/KOH gel cooled to room temperature before use

Scalability contextNo scale-up data reported for gel electrolyte or split-cell device.

Show 5 structured reagent records

Role	Reagent	Amount / concentration	Source
Electrolyte	PVA/KOH gel electrolyte	6.0 M PVA/KOH stated for GCD electrolyte	1.3 Electrochemical measurements; 1.4 Preparation of PVA/KOH gel electrolyte
Additive	polyvinylalcohol (PVA)	3 g dissolved in 24 mL deionized water	1.3 Electrochemical measurements; 1.4 Preparation of PVA/KOH gel electrolyte
Electrolyte	potassium hydroxide (KOH)	3 g liquefied in 6 mL deionized water	1.3 Electrochemical measurements; 1.4 Preparation of PVA/KOH gel electrolyte
Solvent	deionized water	24 mL for PVA plus 6 mL for KOH	1.3 Electrochemical measurements; 1.4 Preparation of PVA/KOH gel electrolyte
Other	filter paper separator	one separator between two 12 mm electrodes	1.3 Electrochemical measurements; 1.4 Preparation of PVA/KOH gel electrolyte