TY  - JOUR
AU  - Tomasso, Camille Jubert
AU  - Pham, Anne L.
AU  - Mattox, Tracy M.
AU  - Urban, Jeffrey J.
PY  - 2020
DA  - 2020/05/19
TI  - Using Additives to Control the Decomposition Temperature of Sodium Borohydride
JO  - Journal of Energy and Power Technology
SP  - 009
VL  - 02
IS  - 02
AB  - Hydrogen (H2) shows great promise as zero-carbon emission fuel, but there are several challenges to overcome in regards to storage and transportation to make it a more universal energy solution. Gaseous hydrogen requires high pressures and large volume tanks while storage of liquid hydrogen requires cryogenic temperatures; neither option is ideal due to cost and the hazards involved. Storage in the solid state presents an attractive alternative, and can meet the U.S. Department of Energy (DOE) constraints to find materials containing > 7 % H2 (gravimetric weight) with a maximum H2 release under 125 °C.While there are many candidate hydrogen storage materials, the vast majority are metal hydrides. Of the hydrides, this review focuses solely on sodium borohydride (NaBH4), which is often not covered in other hydride reviews. However, as it contains 10.6% (by weight) H2 that can release at 133 ± 3 JK-1mol-1, this inexpensive material has received renewed attention. NaBH4 should decompose to H2(g), Na(s), and B(s), and could be recycled into its original form. Unfortunately, metal to ligand charge transfer in NaBH4 induces high thermodynamic stability, creating a high decomposition temperature of 530 °C. In an effort make H2 more accessible at lower temperatures, researchers have incorporated additives to destabilize the structure.
SN  - 2690-1692
UR  - https://doi.org/10.21926/jept.2002009
DO  - 10.21926/jept.2002009
ID  - Tomasso2020
ER  -