Scientists design fast, reversible bio-inspired catalysts
(PHYSorg.com Chemistry)

For wind and sun power to become renewable energy mainstays, the energy they produce intermittently needs to be stored and retrieved efficiently. And that requires storing solar energy in chemical bonds until the energy is needed. To be energy efficient, and thereby cost-effective, there is a great need for reversible catalysts, chemical agents that rapidly form and break chemical bonds in either direction.