Analytical monitoring of sodium borohydride

Abstract

Sodium borohydride (NaBH₄) determination, both qualitative and quantitative, is of great significance in a plethora of areas. These include NaBH₄ for energy systems such as direct borohydride fuel cells and in hydrogen production and storage, as well as use as a reducing agent in organic and inorganic synthesis reactions or in electrodeposition processes. Herein the main methods for NaBH₄ monitoring have been summarised and described, including hydrogen evolution, hydride hydrolysis and iodate methods, and different electrochemical and spectroscopic techniques overviewed.