Sun Wei, Wang Zhiqiang, Zaman Waqas Qamar, Zhou Zhenhua, Cao Limei, Gong Xue-Qing, Yang Ji
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes, School of Resources and Environmental Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China.
Chem Commun (Camb). 2018 Jan 23;54(8):996-999. doi: 10.1039/c7cc09580e.
The lattice strain of IrO plays a critical role in determining its OER activity. The Ir-O bond length change in IrO coordination induces lattice strain. Increasing the annealing temperature results in a stretching strain along the c axis and a compressive strain on the a and b axes, leading to a larger c/a ratio. Enhancing the lattice strain decreases the c/a ratio, which is beneficial for improving OER activity.
氧化铱（IrO）的晶格应变在决定其析氧反应（OER）活性方面起着关键作用。IrO配位中Ir - O键长的变化会引发晶格应变。提高退火温度会导致沿c轴的拉伸应变以及a轴和b轴上的压缩应变，从而使c/a比增大。增强晶格应变会降低c/a比，这有利于提高析氧反应活性。
