Corrosion Protection Market Size: $11B (2013) Metal pretreatments for steel, aluminium, zinc and magnesium. Anti-corrosion and antifouling coatings Energy Batteries & Membranes Market Size: $24B Batteries, $17B Membranes Conductive materials for Li-ion & Flow batteries. Filters and separators for Fuel Cells, desalination and other industrial uses Conductives Conductive Ink Market Size: $18B (2015) Printable conductive ink for circuits in solar photovoltaics, packaging, pharmaceuticals, wearables and hybrid polymers (plastics) Construction Concrete Market Size: $450B (2012) Conductive concrete for snow-free roads, driveways, underfloorheating and other functional concrete.

Notice how big the concrete market size is:who cares about the battery market.