水诱导固体电解质界面调控的连续流电化学合成氨

刘鹏博, 翟盛良, 黄继, 张衷硕, 曾杰, 李少锋

Water-Driven Solid Electrolyte Interphase Governs Continuous-Flow Ammonia Electrosynthesis

Peng-Bo Liu, Sheng-Liang Zhai, Ji Huang, Zhong-Shuo Zhang, Jie Zeng, Shao-Feng Li

Fig. 5. Electrochemical testing of Li-NRR under varied water content in flow cells. (a, b) Chronopotentiometry curves at the water content of 5-7 mmol·L-1 (a) and 55-57 mmol·L-1 (b) respectively, recorded at a current density of -6 mA·cm-2 with an ethanol concentration of 43.0 mmol·L-1. (c) Chronopotentiometry curves of the first two cycles at varying water content in a flow cell. All reported potentials are presented without ohmic drop correction. (d) Nyquist plots of SEIs formed under varied water content, measured at room temperature. (e, f) First-cycle (e) and second-cycle (f) CV curves under different water content. (g) Long-term ammonia synthesis performed at an initial water content of 5-7 mmol·L-1. Insets show the Nyquist plot (left) and SEM image of the electrode after long-term operation (right). (h) Ammonia FE and electrolyte water content at cumulative charge passage during long-term experiments.