Improved hydrogen desorption properties of Co-doped Li2BNH6

Abstract

The hydrogen desorption properties of Li 2 BNH 6 were improved by doping with cobalt. With the addition of CoCl 2 (7 wt%), more than 8 wt% of hydrogen was released from Li 2 BNH 6 at temperatures below 210°C, which is approximately 90°C lower than that of pristine Li 2 BNH 6 . X-ray diffraction, Fourier transform-infrared and Raman characterizations revealed that the dehydrogenation was a stepwise process with the formation of intermediates Li 4 BN 3 H 10 and LiBH 4 and final products of Li 3 BN 2 and LiH. The introduction of Co greatly accelerated the dehydrogenation of Li 4 BN 3 H 10 . X-ray absorption near-edge structure measurements revealed that Co and CoB species formed during ball milling of CoCl 2 with LiBH 4 and LiNH 2 , which may function as catalyst in the subsequent dehydrogenation.

A Review of High Density Solid Hydrogen Storage Materials by Pyrolysis for Promising Mobile Applications

“…Only a small amount of NH 3 was detected when the temperature was over 350 °C. Additionally, the amount of NH 3 was found to be decreased dramatically if the temperature was kept under 300 °C for a long time. , Reaction was then demonstrated to be theoretical consisting of two elementary solid–gas reactions mediated by NH 3 as shown in reactions and …”

“…It was found that almost all hydrogen (for 500 mg Li 2 NH) or a substantial amount of hydrogen (for 500 mg Li 3 N) was absorbed at 255 °C under 30 bar H 2 within 10 min. About 6.5 wt % hydrogen was found to be reversibly desorbed and absorbed at 528 K in reaction . ,, …”

“…Additionally, the amount of NH 3 was found to be decreased dramatically if the temperature was kept under 300 °C for a long time. 279,289…”

“…About 6.5 wt % hydrogen was found to be reversibly desorbed and absorbed at 528 K in reaction 37. 289,293,294…”

A Research on Strategic Emerging Industries

“…From the industry perspective, strategic emerging industries should have capacity to become pillar industry and leading industry. It can stimulate overall economic development, promote the industrial structure and play a supportive role on national economy [5]. It also has sustainability.…”