Energy storage runs on formic acid

Can formic acid be used for energy storage?

Formic acid (53 g H 2 /L) is a promising liquid storage and delivery option for hydrogen for fuel cell power applications. In this work we compare and evaluate several process options using formic acid for energy storage. Each process requires different steps, which contribute to the overall energy demand.

Is formic acid an attractive option for hydrogen storage?

Formic acid may constitute an attractive option to store hydrogen in a dense and safe form. The efficiency of formic-acid-based process chains for the storage of hydrogen energy has been evaluated. The efficiency is highly dependent upon the way formic acid is produced.

Is formic acid a feasible energy carrier?

To make hydrogen a feasible energy carrier, its transformation into another chemical is advisible. Formic acid may constitute an attractive option to store hydrogen in a dense and safe form. The efficiency of formic-acid-based process chains for the storage of hydrogen energy has been evaluated.

Why is formic acid better than liquid hydrogen?

Compared to liquid hydrogen, formic acid is thus more convenient and safer to store and transport. Converting formic acid to power has been demonstrated in direct formic acid fuel cells and in dehydrogenation reactions to supply hydrogen for polymer electrolyte membrane fuel cells.

How is hydrogen stored in formic acid (HCOOH) released on demand?

Hydrogen stored in formic acid (HCOOH) can be released on demand by decomposing formic acid into hydrogen (H 2) and carbon dioxide (CO 2) on a catalytic surface.

Is formic acid thermodynamically unfavorable?

The first step, i.e. production of formic acid, is thermodynamically unfavorable. However, the energy demand can be reduced if a formate salt is produced via a bicarbonate route instead of forming the free acid from hydrogen and carbon dioxide.