Hydrogen peroxide is produced by electrolytic action

http://link.springer.com/article/10....8221369#page-1

When combined with a high intensity photocell - operating in a water/oxygen solution produces hydrogen peroxide.

It is therefore feasible to consider a rechargeable flow battery consisting of hydrogen peroxide and water.

A 2 litre bottle of hydrogen peroxide contains 2.9 kg of the material.

Discharging a flow battery using this material reduces it to 1.366 litres and 1.366 kg of pure water with 1.534 grams of oxygen with the release of 1.2 kWh of electrical energy.

A 2.88 square meter (1.2 m x 2.4 m) solar panel that is 55% efficient produces 1,584 watts of electrical power and when exposed to 3.6 hours per day generate 5.7 kWh/day. This charges 9.5 litres of hydrogen peroxide every 24 hours. Using 50% hydrogen peroxide to maintain stability, requires 19 litres every 24 hours. This is a layer of hydrogen peroxide 66 mm thick across a 1.2 m x 2.4 m area.

Six panels, forming an area 4.8 m x 3.6 m may discharged continuously at 1.4 kW

24 litres - containing 69.6 kg of hydrogen peroxide can maintain a 1.2 kW power level for 24 hours. This is sufficient to supply a home.

A Tesla S uses 85 kWh to recharge. 283.3 litres at 50% concentration stores this much energy - retrievable in electrical form. This is half the weight of the LiIon battery. Another six panels is sufficient to refill a Tesla S twice every 5 days - a dozen times a month.

https://www.youtube.com/watch?v=w2itwFJCgFQ