Super Capacitor

Graphene Researchers Community

Graphene Oxide

How To Make Graphene Oxide - The Tour Method - Apparently Oxide isn't needed anymore for Graphene...

Graphene

Super Easy Graphene. Uses graphite intercolated compound. Hydrogen peroxide.

Graphene from table sugar - the Tang Lau Method - 21 Apr 2013. Cooks it in autoclave. Makes a small monolayer of graphene oxide, then gets heated into graphene.

"essentially you use any where between 0.05 and 0.5 M solution of sugar - fructose, sucrose, glucose they all work. You heat it from between 165 - 220 degrees centigrade in an autoclave for between 1 and 7 hours and pour it out. A graphene oxide layer will form the thickness of whic depends on the time you heat it for, the concentration of sugar and the heat of the oven. Once you have got your layer you need to anneal it at 350 degrees and exclude air by wrapping in foil of some kind. I liked the method - I just thought it was rubbish for producing larg amounts - but something to work with."

How To Make Graphene With Soap, Water And A Blender - 25 Apr 2014 - Makes soapy graphene, lower conductivity.

The Easiest Way To Make High Quality Graphene - 15 Jun 2014. Uses a solvent and a harmoniser. 13,000 RPM for 1 hour. 75% Acetone, 24% water. 40g of graphite. 100μm to 5μm, 45μm=325mesh. Then centrifuge it at 1000k rpm. Concentrated 4mg per mm.

Step by Step Method for Making Graphene - 19 Jun 2014 - Needs ultrasonicator. "Achieving concentrated graphene dispersions in water/acetone mixtures by the strategy of tailoring Hansen solubility parameters" 416.75mL of acetone 88.25mL of deionised water 1.5g 325 mesh powdered flake graphite

Graphene From Tea - 30 Sep 2014. Needs some kind of acid and homogenizer. "Silver is unexfoliated graphite.". "Blue grey liquid is graphene solution"

Graphene From Green Tea - 1 Oct 2014. He's using graphene oxide. Just needs stiring for 2 hours. Mentions "green chemistry". Only half a gram per litre ☹

Graphene - A Simple Method For Mass Production - 23 Jul 2016 - From Graphite. Needs electrolysis then sonification.

Easy Graphene Sheets-Laminator & Graphite - m3sca1. Uses a lamination. 10MΩ ☹

Pristine Exfoliation of Graphene Using Ammonium Hydroxide

Simple electro-chemical method for graphite exfoliation - 21 Aug 2016 - Confirming Robert Smith's method.

Expanded carbon

Expanding carbon from Fructose - "just do the same thing but with intercalated graphite and you are there - intercalate the graphite with sulphuric acid - then take your intercalated graphite and repeat this and it will be the Petrik method"

The Microwave Production of Expanded Graphite - Using a microwave to expand graphite produces partially-exfoliated graphene "worms" that are useful in the production of graphene and for making supercapacitor batteries. This method involves microwaving acid-treated graphite to produce expanded graphite. Acid-treated graphite can be made by soaking approximately 10 grams of ~35 mesh flake graphite in 150 mL concentrated sulfuric acid (H2SO4, 98%) together with 50 mL 70% Phosphoric acid (70%) overnight. The acid molecules are small enough to squeeze in between and intercalate the layers of graphene that make up the graphite flakes. The graphite is then placed in a acid-resistant filter paper (PE/PTFE) and washed with copious amounts of deionized (DI) or distilled water several times to remove any excess acid until the pH reaches 7 and is dried overnight or for several hours in a vacuum drier at 60-80 degrees C. The dried acid-treated graphite is then placed in a modified domestic 1000-Watt microwave oven for 1-2 minutes at a time with frequent intermissions in order to remove the expanded graphite and to rearrange the remaining unexpanded graphite. The process is repeated until all the acid-treated graphite is expanded.

Capacitor

A 1,700F Supercapacitor - Robert Murray-Smith capacitor main overview. Ionic fluid is better than salt water as an electrolyte.

A World First - A 10 kiloFarad Capacitor (10,000 F) - Mentions the name of the electrolytes. - 5th May 2015 (lasersaber Towards A 1 MegaFarad Super Capacitor. - Shows flip book style of commercial capacitors. - 10th May 2015

The Super Safe Megafarad capacitor - Update on the mega-farad capacitor.

How To Make A SuperCapacitor - Follow Up

How To Make A SuperCapacitor - Step By Step - Uses activated carbon, not graphene. PVA, Paper Towel. Carbon Felt. Collectors: Zinc, Magnisium. - 18 Feb 2016

Making High Performance Supercapacitor Materials - 1 - Makes carbon foam from sugar and hydrocloric acid.

Making High Performance Supercapacitor Materials - 2 - Graphine Oxide/Graphite foil. Using graaphene oxide and a candle flame to make a high performance material for supercapacitors.

a - DIY Safe, Simple, Easy Double Layer Supercapacitor

MudWatt Microbial Fuel Cell - How It Works

Microbial

Bio Bug Cell Experiment

Microbial fuel cell - DIY Elbonian style

Rice Carbon Self Charge Cell

Build Your Own MICROBIAL FUEL CELL - Do It Yourself - Tutotrial - Buried in the ground.

How Microbial Fuel Cells Work? - Using sea water for devices at sea.

Bruce Logan | Microbial Fuel Technologies - In depth talk.

The Microbial Fuel Cell - Short technical overview. Builds a MudWatt.

How to make an Microbial Electrolysis Cell MEC ( Part 1) Best science project

MFC Architectures- Several types of microbial fuel cells - Penn State in the Logan lab.

Conductive Ink

• a square of ½ oz. copper has a resistance of about 1 mΩ

How To Make A Conductive Ink - 13 May 2014. Uses graphite. Copied from patent. 100g gum arabic. 500mL of water. 300g of flake graphite powder. 30-40Ω per square. Graphite "Fine flake graphite". Uses a square probe. Thicker means less resistance.

Super Conductive Carbon Ink - 23 Jul 2014. - 26Ω. Rubs down the printed ink with a cloth and gets 17Ω. Rubs with a spoon gets 5Ω.

Graphene Plastic/Epoxy

Super Strong Conductive Graphene Bio Plastic How to Make / DIY, GRAPHENE / GRAPHITE PLASTIC

Self Recharging

Generating Electricity From A Coat Of Graphene Paint - Alternative Solar