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Effectiveness of undoped and (Nd, Yb)-doped PbTe nanoparticles deposition on supercapacitor performance of TiO2 nanotube arrays
Materials Letters ( IF 2.7 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.matlet.2020.128948
Nazanin Hamnabard , Alireza Valipour , V.C. Anitha , Sang Woo Joo

Abstract Undoped and doped PbTe nanoparticles with neodymium (Nd) and ytterbium (Yb) ions were hydrothermally synthesized and deposited on anodized TiO2 nanotube (TNT) arrays to form hybrid binder-free TNT electrodes for supercapacitor. The as-prepared TNT electrodes were characterized by XRD, SEM, and XPS. Besides, BET method was used to confirm the surface area of as-synthesized nanoparticles. Among TNT electrodes, the one with Yb-doped PbTe exhibited enhanced capacitance (0.93 mF/cm2 at 10 mV/s, 2.16 mF/cm2 at 5 µA/cm2) and low resistance (4.68 Ω), along with good stability (∼93%). Overall, TNT in combination with Yb-doped PbTe nanoparticles could provide an ideal platform for efficient delivery of capacitance.

中文翻译:

未掺杂和 (Nd, Yb) 掺杂的 PbTe 纳米颗粒沉积对 TiO2 纳米管阵列超级电容器性能的影响

摘要 具有钕 (Nd) 和镱 (Yb) 离子的未掺杂和掺杂的 PbTe 纳米粒子被水热合成并沉积在阳极氧化的 TiO2 纳米管 (TNT) 阵列上,以形成用于超级电容器的混合无粘合剂 TNT 电极。所制备的 TNT 电极通过 XRD、SEM 和 XPS 进行表征。此外,BET 方法用于确认合成的纳米粒子的表面积。在 TNT 电极中,掺 Yb 的 PbTe 电极表现出增强的电容(10 mV/s 时为 0.93 mF/cm2,5 µA/cm2 时为 2.16 mF/cm2)和低电阻(4.68 Ω),以及良好的稳定性(~93 %)。总体而言,TNT 与掺 Yb 的 PbTe 纳米粒子相结合,可以为有效传输电容提供理想的平台。
更新日期:2021-02-01
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