原位57Fe穆斯堡尔光谱技术及其在Ni-Fe基析氧反应电催化剂中的应用

Jafar Hussain Shah, 谢起贤, 匡智崇, 格日乐, 周雯慧, 刘朵绒, Alexandre I. Rykov, 李旭宁, 罗景山, 王军虎

In-Situ/Operando 57Fe Mössbauer Spectroscopic Technique and Its Applications in NiFe-based Electrocatalysts for Oxygen Evolution Reaction

Jafar Hussain Shah, Qi-Xian Xie, Zhi-Chong Kuang, Ri-Le Ge, Wen-Hui Zhou, Duo-Rong Liu, Alexandre I. Rykov, Xu-Ning Li, Jing-Shan Luo, Jun-Hu Wang

Table 1 Ex-situ 57Fe Mössbauer spectral parameters of NiFem-Fe PBAs at room temperature

Sample Valence/spin state δ/Fe (mm·s-1) Δ (mm·s-1) Γexp(mm·s-1) A (%) NiFe0.11-Fe PBA FeⅢ high spin 0.44 0.50 0.43 14 FeⅢ low spin -0.17 0.50 0.38 86 NiFe0.2-Fe PBA FeⅢ high spin 0.40 0.65 0.38 19 FeⅢ low spin -0.16 0.59 0.46 81 NiFe0.25-Fe PBA FeⅢ high spin 0.37 0.65 0.34 21 FeⅢ low spin -0.15 0.62 0.45 79 NiFe0.29-Fe PBA FeⅢ high spin 0.37 0.64 0.36 24 FeⅢ low spin -0.15 0.57 0.44 76