$\textit{原位}$氢化物呼吸在模板辅助电沉积钯纳米线过程中的表现
$\textit{In situ}$ hydride breathing during the template-assisted electrodeposition of Pd nanowires
AI总结：
本研究通过原位X射线散射等技术，揭示了钯纳米线电沉积过程中氢化物相变及晶粒合并对氢掺入的影响，阐明了电沉积与析氢反应的竞争机制。
摘要：
我们通过掠入射透射小角和广角X射线散射（GTSAXS和GTWAXS）、X射线荧光（XRF）以及二维表面光学反射（2D-SOR）对电化学制备的钯纳米线的结构演化进行了原位研究。这揭示了在钯电沉积过程中，电沉积与析氢反应（HER）如何竞争并相互作用。在纳米线的自下而上生长过程中，我们观察到形成了$\beta$相钯氢化物。暂停电沉积后，会导致从$\beta$相到$\alpha$相钯氢化物的相变。此外，我们发现晶粒合并随后阻碍了氢在钯晶胞中的掺入。GTSAXS和2D-SOR提供了关于被钯占据的孔隙体积分数的互补信息，而XRF用于监测电沉积的钯量。
英文摘要：
We investigated the structural evolution of electrochemically fabricated Pd nanowires $\textit{in situ}$ by means of grazing-incidence transmission small- and wide-angle x-ray scattering (GTSAXS and GTWAXS), x-ray fluorescence (XRF) and 2-dimensional surface optical reflectance (2D-SOR). This shows how electrodeposition and the hydrogen evolution reaction (HER) compete and interact during Pd electrodepositon. During the bottom-up growth of the nanowires, we show that $β$-phase Pd hydride is formed. Suspending the electrodeposition then leads to a phase transition from $β$- to $α$-phase Pd hydride. Additionally, we find that grain coalescence later hinders the incorporation of hydrogen in the Pd unit cell. GTSAXS and 2D-SOR provide complementary information on the volume fraction of the pores occupied by Pd, while XRF was used to monitor the amount of Pd electrodeposited.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
