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- W2920122258 abstract "Abstract In unitized regenerative fuel cells, residual water at the end of electrolysis cell mode greatly affects the cell voltage during mode switching from electrolysis cell to fuel cell mode. Therefore, the residual water removing is essential to realize the mode switching, which requires the knowledge on gas purge effect on cell voltage dynamic response. In this study, gas purge effect in oxygen and hydrogen sides on cell voltage dynamic response is investigated, respectively. In addition, the effects of fuel cell mode startup current density and electrolysis cell mode operating current density are analyzed. The results show that: the increases of gas purging time and purging gas flow rate promote the mode switching from electrolysis cell to fuel cell modes. High flow rate of purging gas is preferred than long gas purging time during mode switching when the same amount of purging gas is used. In addition, gas purging in hydrogen side is necessary. The influence of residual water in hydrogen side increases with the startup current density of FC mode, and long purging time is required for high startup current density of FC mode. Electrolysis cell mode operating current density increase leads fuel cell mode performance decrease under the same gas purge condition." @default.
- W2920122258 created "2019-03-11" @default.
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- W2920122258 date "2019-04-01" @default.
- W2920122258 modified "2023-09-29" @default.
- W2920122258 title "Experimental study of gas purge effect on cell voltage during mode switching from electrolyser to fuel cell mode in a unitized regenerative fuel cell" @default.
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- W2920122258 doi "https://doi.org/10.1016/j.enconman.2019.02.067" @default.
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