Bifunctional Porous Hollow Cu/TiN Heterojunction Catalysts for Ultralow Overpotential and High Areal Capacity Li–O2 Batteries
Bifunctional Porous Hollow Cu/TiN Heterojunction Catalysts for Ultralow Overpotential and High Areal Capacity Li–O2 Batteries
研究概述
在铜泡沫上构筑多孔中空纳米管阵列及Cu/TiN异质界面，促进Li2O2形成/分解，减缓锂氧电池迟滞动力学。电池在0.1 mA/cm²下面积容量25.6 mAh/cm²、过电位0.37 V；0.25 mAh/cm²限容、0.2 mA/cm²下循环超过350次。
谱图与表征信息
Fig. 3. (a) XPS survey spectra of Cu/TiN NTs and Cu@TiO2 NWs without CuFo substrate and the control samples of TiN and CuFo substrate. (b-d) high-resolution XPS spectra of Cu 2p, Ti 2p and N 1 s, respectively. (e) Ti K-edge XANES and (f) Fourier transformed EXAFS of Ti foil, Cu/TiN NTs, and TiN. (g-i) Fourier transformed EXAFS of Ti foil, TiN, and Cu/TiN NTs.