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https://github.com/zanzythebar/al-ion

Open Source Project dedicated to rechargable Al-Ion chemistry
https://github.com/zanzythebar/al-ion

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Open Source Project dedicated to rechargable Al-Ion chemistry

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README 

        
# Al-Ion

Open Source Project dedicated to rechargable Al-Ion chemistry



Below is the Al Ion Cell Forumla



---



## Reaction Chemistry



Deposition and Dissolution based chemistry.



Capacitive relationship between types of carbon & structures used.



- pseudocapacitance

- redox reaction additives to increase charge density



### `Electrolyte`



`AlCl + Urea + Ethylene Glycol + imidozolium chloride`



- Fumed Silica

  - Ball Milled with `AlCl` to increase surface area and sieved at >=45µm

  - 5-10% by weight of the gel

- DES base

  - ionic liquid

  - 90-95% by weight of the gel

  - AlCl HexaHydrate

  - Ethylene Glycol

  - Urea

    - 1-5% by weight of the of the DES base

  - Imidozolium Chloride

    - 70-85% by weight of the of the DES base

  - LiCl

    - 0.1-1% by weight of the of the DES base (only on the positive electrode)

    - Increases ionic conductivity of the gel

  - Left over: 5% by weight of the DES base

    - possible additions to lower viscosity

      - Ethylene Carbonate

      - Polymeric Binder



#### `Gel`



There is a gel that is used as the electrolyte, which is made from:



- AlCl + Urea + Ethylene Glycol + imidozolium chloride

- Fumed Silica Nano-particles

- Emulsified in Deep Eutectic Solvent (DES) ionic liquid

- (optional) 1% by weight of a polymeric binder

- (optional) 1% by weight of eythylene carbonate to decrease viscosity



This gel is then cast into a thin film of aprox `4mm`.



One gel layer is used for the positive electrode, and one for the negative electrode.



##### `Positive Electrode Gel`



Additon of `0.1%` - `1%` by weight `LiCl` to the gel to increase the ionic-conductivity of the gel (additional charge transport).



### `Separator`



Mesoporous membrane with ion exchange capacity and hydrophobic pores



- Cellulose Acetate

- Fumed Silica Nano-particles

- Ethylene Glycol

- Acetone (to dissolve cellulose acetate)



Mix well and then cast into a thin film.



Once dry, the film is rinsed with water to remove the gylcol and residual acetone.



> **Note**: The film is then placed in a vacuum oven at 80C for 12 hours.

>

> **Note**: The film is soaked in a solution aqueus Cl ion solution for 24 hours, to increase the ion exchange capacity of the membrane.



### `(-) Electrode`



The negative electrode is made from a `graphene` 3D foam by exfoliating Graphene Oxide (GO) using UV light.



The GO is made by a modified Hummers method, with the addition of `carboxymethylaceytlene` (CMC) complexed with Ag to the GO, to increase the conductivity of the resulting graphene after exfoliation.

This material is then mixed with a `polymer binder` to form a paste and coated onto a `10µm<` sheet of `Al` metal.



### `(+) Electrode`



The positive electrode is made from a `graphene` 3D foam by exfoliating Graphene Oxide (GO) using UV light.



The GO is made by a modified Hummers method, with the addition of `carboxymethylaceytlene` (CMC) complexed with Ag to the GO, to increase the conductivity of the resulting graphene after exfoliation.



After exfoliation, the graphene foam is made into an ink by mixing with a `polymer binder` and a `carbon black` to form a paste.



A Nickel Foam is then soaked in this material to form a `Ni foam` coated with `graphene`.



The `Ni Foam` is then freeze-dried to remove the solvent and heated to remove bound `O2`.



## Notes



Potential hydridization by comibining `Ni-Fe` cells with the `Al-Ion` cells.



Could potentially be used as a `Ni-Fe` cell with a `Al-Ion` cell as a `supercapacitor` to increase the charge density.



Could yield a potential of: 



- 2V @600mA



Optional use of fiberglass mat as cellulose acetate separator - instead of Fumed Silica