The Effect of Platinum-coatings on Hydrogen- and Water-absorption and Desorption Characteristics of Lithium Zirconate

Hydrogen (H)- and water (H 2 O)-storage and desorption characteristics of 25 nm thick Pt films onLi 2 ZrO 3 composite materials, exposed to normal air at room temperature, have been investigated by means of elastic recoil detection (ERD), Rutherford backscattering spectrometry (RBS), weight gain measurement (WGM), and thermal desorption spectroscopy (TDS) techniques. It was found by the ERD and TDS that H and H 2 O were absorbed into the Pt-coated Li 2 ZrO 3 in air at room temperature and desorbed from it in vacuum at much low temperatures of approximately 317 and 309 K, respectively. In addition, the WGM and TDS spectra revealed that the absorption and desorption characters ofsome gases such as CH 4 , CO, and CO 2 including H as well as H 2 Ointo the Li 2 ZrO 3 bulk were improved by Pt deposition.