In situ electrochemical quartz crystal microbalance studies of water electrolysis at a palladium cathode in acidic aqueous media

Electrochemical quartz crystal microbalance study on hydrogen absorption and desorption into/from palladium and palladium–noble metal alloys

“…The degradation of the quartz crystal resonator during hydrogen absorption has already been reported [1,8,9,12]. The conclusion is that prolonged potential cycling in the hydrogen region should be avoided when EQCM is used in studies on hydrogen absorption/desorption.…”

“…In the literature [9][10][11][12][13]15], the data collected by EQCM are often interpreted with the use of a parameter in units of gram per mole, called ''apparent molar mass'', M a . For hydrogen absorption the value of M a is equal:…”

“…In general, the EQCM response can be determined by several factors [16][17][18] but in the case of hydrogen electrosorption the most important are two of them: (i) electrode mass changes (i.e. changes in the amount of electrosorbed hydrogen) and (ii) stresses in crystal lattice induced by hydrogen absorption [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]19,20]. Therefore, the following equation is valid [6,14,15]:…”

“…In the literature, there are numerous reports devoted to the application of the electrochemical quartz crystal microbalance (EQCM) in the investigation of hydrogen absorption in Pd [1][2][3][4][5][6][7][8][9][10][11][12] and some of its alloys [13][14][15].…”

Water electrolysis: from textbook knowledge to the latest scientific strategies and industrial developments

“…Electrochemical quartz crystal micro/-nanobalance is also a reported technique to survey water electrolysis catalysts. 1785 Firstly, demonstrated for very model Pd surfaces, 1791 it has since them been used for more practical nanostructured catalysts. [1792][1793][1794] Inductively coupled plasma mass spectrometry (ICP-MS), a classical technique for trace analyses, was recently coupled online to electrochemistry by the group of Mayrhofer.…”