The lifetime test for the catalyst indicated that its life is over 30 days.
The lifetime test of the dispersed black core material showed that the current density was almost unchanged while the field was applied.
It also describes the lifetime testing methods, variability of the carrier lifetime, lifetime instabilities, surface component of the effective lifetime, emitter component of the effective lifetime, and carrier trapping effects.
The catalysts and Nafion® membrane of the membrane electrode assembly (MEA) from the lifetime test were comprehensively examined by XRD, HRTEM, FTIR and Raman spectroscopy techniques.
Delamination of the IrO2-Ta2O5 layer from the Ti substrate was the main failure mode of an anode during the lifetime test.
Stage-failure phenomenon occurred in the lifetime test, which indicated the existence of recoverable and non-recoverable degradations during the entire operation process.
Furthermore, we will also demonstrate how these methods are giving us a unique insight into material changes that occur within a device during the course of the lifetime test and, particularly in the case of the fluorescent devices how this has led to dramatic device performance improvement.
The changes of microstructure, surface composition, the interfacial structure of the MEA, and the aging of Nafion® under the DMFC lifetime tests were also observed.
The device lifetime tests of PeLEDs were performed on a ZJZCL-1 OLED ageing lifespan test instrument.
For the first time, the decomposition and dissolution of active oxide layers are quantitatively characterized from the decreases in cell volume of rutile-structured IrO2 crystallite and from the increases in texture coefficient of (0 0 2) planes, respectively, as a result of the accelerated lifetime tests.
