Abstract
Herein, the hydrogen absorption and desorption characteristics of H2O-uptake by LiCoO2 materials at room temperature and the most stable trapping sites of H in LiCoO2 were investigated; this was achieved by using weight gain (WG) measurement, elastic recoil detection (ERD) in ambient air, gas chromatography (GC), and first-principles calculations with a density functional theory code. The WG results and ERD spectra revealed that the H concentration in LiCoO2 increased when soaked in H2O at 288 K for 2 min. The GC analysis revealed that hydrogen molecules (H2) were released from the H2O-uptake LiCoO2 materials at annealing temperatures less than 523 K. In addition, it was found by the first-principles calculations that H atoms dissociated from H2O tend to preferentially occupy lithium (Li) substitution sites in LiCoO2. These results indicate that the LiCoO2 material has a significant impact on H storage at room temperature due to H2O splitting to product H2.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
