出版日期：2023-03-30 00:00:00

著者：Yu-Sheng Hsiao, Lo-Yueh Chang, Chih-Wei Hu, Cheng-Zhang Lu, Nian-Jheng Wu, Ying-Lin Chen, Tzu-Hsien Hsieh, Jen-Hsien Huang, Shih-Chieh Hsu*, Huei-Chu Weng, Chih-Ping Chen

著錄名稱、卷期、頁數：Applied Surface Science 614, 156155

摘要：Because of its high operating potential (ca. 1.6 V), high theoretical capacity (ca. 387 mA h/g), and safety of operation, TiNb2O7 (TNO) is a promising anode material and an excellent alternative to spinel Li4Ti5O12. To overcome the poor electrical conductivity and low Li+ ion diffusion coefficient of pure TNO, and, thereby, significantly improve its rate performance, in this study we prepared a novel Ti1–xCrxNb2O7 (x = 0.05; Cr-TNO) anode material. When evaluated for its energy storage performance, the electrochemical properties of Cr-TNO were improved relative to those of TNO, including an excellent rate capability (178.2 mA h/g at 10C) and good cycle stability (84.2 % retention after 500 cycles), due to enhanced electronic and ionic conductivities. Furthermore, we demonstrate herein the practical applications of Cr-TNO when combined with active carbon and a LiNi0.5Mn1.5O4 cathode in an asymmetric supercapacitor and a full lithium-ion battery, respectively. Both of these devices possessed pronounced cycling stability and rapid charge/discharge characteristics, reflecting the excellent electrochemical performance of Cr-TNO.

語言：en

ISSN：1873-5584

期刊性質：國外

收錄於：SCI

審稿制度：否

國別：NLD

出版型式：電子版