Potassium(I) Amidotrihydroborate: Structure and Hydrogen Release

Potassium(I) amidotrihydroborate (KNH2BH3) is a newly developed potential hydrogen storage material representing a completely different structural motif within the alkali metal amidotrihydroborate group. Evolution of 6.5 wt % hydrogen starting at temperatures as low as 80 °C is observed and shows a significant change in the hydrogen release profile, as compared to the corresponding lithium and sodium compounds. Here we describe the synthesis, structure, and hydrogen release characteristics of KNH2BH3.

氨基三氢硼酸钾(I)（Potassium(I) amidotrihydroborate，KNH2BH3）是一种新近开发的极具应用潜力的储氢材料，在碱金属氨基三氢硼酸盐类中代表了一种完全迥异的结构基元。实验观测到该材料可在低至80℃的温度下开始释放6.5 wt%的氢气，且相较于对应的锂基与钠基同类化合物，其释氢曲线发生了显著变化。本文详述了KNH2BH3的合成方法、晶体结构及释氢性能。