Synthesis · The Origins of Ion Conductivity in MOF-Ionic Liquids Hybrid Solid Electrolytes

6 structured synthesis routes

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

Partial recipeSource: Main

Route 1: Unknown

2 · 2 Materials and Methods

Metal precursorsaluminium metal source not specified in main text

Linker precursors1,2,4,5-benzenetetracarboxylic acid / pyromellitic acid

Activationall samples activated at 300 deg C at 1e-3 mbar for 24 h before soaking electrolyte was added

Show 2 structured reagent records

Role	Reagent	Amount / concentration	Source
Metal Source	aluminium metal centres; exact precursor not specified	Not specified	2 · 2 Materials and Methods
Linker	1,2,4,5-benzenetetracarboxylic acid / pyromellitic acid	Not specified	2 · 2 Materials and Methods

Partial recipeSource: Main

Route 2: Other

3 · Table 1 · Table 1

Metal precursorsMIL-121 (no Li)

SolventsEMIM-TFSI ionic liquid

AdditivesLiTFSI

Atmosphereclosed container in drying oven

Timeat least 24 h rest after mixing

Work-upvigorous mixing to homogenise powder; rest in closed drying oven container; powder pressed into pellets at 0.3 tons; Au blocking electrodes sputtered for impedance tests

ActivationMIL-121 activated at 300 deg C and 1e-3 mbar for 24 h before soaking electrolyte addition

Show 2 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	MIL-121 (no Li)	77 wt% of final sample	3 · Table 1 · Table 1
Electrolyte	LiTFSI in EMIM-TFSI	23 wt% of final sample · 0.4 M LiTFSI	3 · Table 1 · Table 1

Partial recipeSource: Main

Route 3: Other

3 · Table 1 · Table 1

Metal precursorsMIL-121 (no Li)

AdditivesEMIM-TFSI ionic liquid

Atmosphereclosed container in drying oven

Timeat least 24 h rest after mixing

Work-upvigorous mixing to homogenise powder; rest in closed drying oven container; powder pressed into pellets at 0.3 tons; Au blocking electrodes sputtered for impedance tests

ActivationMIL-121 activated at 300 deg C and 1e-3 mbar for 24 h before ionic-liquid addition

Show 2 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	MIL-121 (no Li)	77 wt% of final sample	3 · Table 1 · Table 1
Electrolyte	EMIM-TFSI ionic liquid	23 wt% of final sample	3 · Table 1 · Table 1

Partial recipeSource: Main

Route 4: Other

2 · 2 Materials and Methods

Metal precursorsMIL-121/Li

SolventsEMIM-TFSI ionic liquid

AdditivesLiTFSI

Atmosphereclosed container in drying oven

Timeat least 24 h rest after mixing

Work-upvigorous mixing to homogenise powder; rest in closed drying oven container; powder pressed into pellets at 0.3 tons; Au blocking electrodes sputtered for impedance tests

ActivationMIL-121/Li activated at 300 deg C and 1e-3 mbar for 24 h before soaking electrolyte addition

Show 2 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	MIL-121/Li powder	77 wt% of final sample	2 · 2 Materials and Methods
Electrolyte	LiTFSI in EMIM-TFSI	23 wt% of final sample · 0.4 M LiTFSI	2 · 2 Materials and Methods

Partial recipeSource: Main

Route 5: Other

2 · 2 Materials and Methods

Metal precursorsMIL-121/Li

AdditivesEMIM-TFSI ionic liquid

Atmosphereclosed container in drying oven

Timeat least 24 h rest after mixing

Work-upvigorous mixing to homogenise powder; rest in closed drying oven container; powder pressed into pellets at 0.3 tons; Au blocking electrodes sputtered for impedance tests

ActivationMIL-121/Li activated at 300 deg C and 1e-3 mbar for 24 h before ionic-liquid addition

Scalability contextsample kept a true solid appearance, was not waxy and could be pressed into pellets

Show 2 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	MIL-121/Li powder	77 wt% of final sample	2 · 2 Materials and Methods
Electrolyte	EMIM-TFSI ionic liquid	23 wt% of final sample	2 · 2 Materials and Methods

Partial recipeSource: Main

Route 6: Other

2 · 2 Materials and Methods

Metal precursorsMIL-121

Additiveslithium acetate (LiAc)

Atmosphereclosed container; samples kept free from moisture and air for subsequent measurements

Timeovernight stirring; activation 24 h

Work-uprinsed and dried MIL-121/Li sample mentioned for ICPMS aliquot; detailed rinse/dry conditions not specified in supplied main text

Activation300 deg C at 1e-3 mbar for 24 h before soaking electrolyte addition

Show 2 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	MIL-121	Not specified	2 · 2 Materials and Methods
Additive	lithium acetate (LiAc)	Not specified	2 · 2 Materials and Methods