IMPEDANCE AND ADMITTANCE MEASUREMENTS AT INTERCALATED n-HfS2/NONAQUEOUS ELECTROLYTE INTERFACE.

Article abstract of DOI:10.1149/1.2095609

Capacitance, impedance, and admittance studies were performed on single-crystal n-HfS//2 before and after copper intercalation from acetonitrile-based electrolyte. The n-HfS//2/nonaqueous electrolyte interface was modeled by equivalent R-C circuits containing frequency dependent elements. Electrochemical intercalation by copper into n-HfS//2 introduced faradaic conductance effects. The composition of copper intercalated n-HfS//2 in close proximity to the interfacial region was obtained assuming a diffusion coefficient for copper in n-HfS//2 of 10** minus **8 cm**2/s. The photoanode demonstrated apparent degeneracy for greater than 0. 1 moles of intercalated copper, suggesting that progressive electronic population of the n-HfS//2 conduction band was occurring.

Full text of DOI:10.1149/1.2095609

Downloaded on 2015-03-10 to IP 132.174.255.116 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 132.174.255.116 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 132.174.255.116 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 132.174.255.116 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 132.174.255.116 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 132.174.255.116 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).