Dual-salt-enabled atomic engineering of Zn–N4 sites through Na/Cl modulation for high-performance bifunctional oxygen electrocatalysis
Dual-salt-enabled atomic engineering of Zn–N4 sites through Na/Cl modulation for high-performance bifunctional oxygen electrocatalysis
研究概述
通过双氯盐辅助静电纺丝与热解，制备金属–氮–碳催化剂，调节Zn–N4周围的氯配位环境。比较多种金属盐与碱金属盐组合，Zn/Na体系表现最佳；氯对提升氧还原性能具有关键作用。ZnNa-CF-900兼具氧还原、析氧活性及稳定性，可用于可充电锌空气电池。
谱图与表征信息
Fig. 4 Comparative (a) normalized Zn K-edge XANES spectra and (b) XAFS spectra of five Zn-containing samples: Zn foil, ZnO, ZnPc, Zn-CFs, and ZnNa-CFs. EXAFS fitting curves for (c and d) ZnNa-CFs and (e and f) Zn-CFs in R and k spaces, respectively. (g) WT contour plots of the five samples.