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Low Cost Chemical Synthesis of Ammonia Borane Complex for Hydrogen Storage

Feng Cao, Zhen Yu Fang, Fei Chen, Qiang Shen, Si Qing Wang, Bin Li

Abstract

Ammonia borane (AB) hydrides have been employed as disposable hydrogen (H2) sources for fuel cell applications, due to their high hydrogen capacity. In this paper, ammonia borane (AB) complex with high purity was synthesized by chemical method, using the low cost raw materials of NaBH4, CO2, and NH3. The thermal dynamic for the synthesis process is analyzed. The phase composition for the obtained ammonia borane (AB) complex powders was detected by X-ray diffraction (XRD) characterization. The results suggest that, very high purity ammonia borane (AB) complex powders were obtained, which was quite in agreement with the standard index of ammonia borane.

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Key concepts: Ammonia borane, Hydrogen storage, Ammonia, Borane, Hydrogen, Materials science, Raw material, Inorganic chemistry