https://scholars.lib.ntu.edu.tw/handle/123456789/626615
標題: | Co- and Ni-Based Electroactive Metal-Organic Frameworks for Stable Lithium Storage: Electrochemical and Charge-Storage Behavior in Response to Different Metal Centers | 作者: | Ngue, CM Baskoro, F Wong, HQ Yen, HJ MAN-KIT LEUNG |
關鍵字: | ENERGY-STORAGE; ANODE MATERIAL; HIGH-CAPACITY; TIO2 ANATASE; GAS-STORAGE; MOF; PERFORMANCE; IMPEDANCE; SEPARATION; BATTERIES | 公開日期: | 2022 | 出版社: | AMER CHEMICAL SOC | 卷: | 22 | 期: | 10 | 起(迄)頁: | 5872 | 來源出版物: | CRYSTAL GROWTH & DESIGN | 摘要: | In this work, we successfully synthesized [Co(TTPA)3(TDC)2(H2O)]·4DMF·3H2O (1) and [Ni(TTPA)3(TDC)2(H2O)]·3DMF·H2O (2) by incorporating a redox-active tris[4-(1H-1,2,4-triazol-1-yl)phenyl]amine (TTPA) ligand and thiophene-2,5-dicarboxylate (TDC) as a second carboxylic linker. Redox behavior of 1 and 2 was elucidated by a solid-state electrochemical method. Solid-state in situ spectroelectrochemical experiments confirmed the formation of triphenylamine radical cations under anodic potential. There is a scarcity of the anode material investigated using an organic moiety from the triphenylamine core, so we decided to investigate its lithium-ion storage and its capacity. The half-cell lithium-ion battery (LIB) studies demonstrate that both 1 and 2 exhibited an efficient and reversible Li+ storage capability of 210 and 146 mA h g-1 at 0.5 A g-1 after 1000 cycles, respectively. Spectroscopic studies indicated that 1 and 2 remained stable despite more than 1000 cycles. Further systematic electrochemical and ex situ Fourier-transform infrared analyses depicted that the organic moiety plays an important role in the Li+ storage mechanism through a synergic contribution of a capacitive and diffusion-controlled process. Due to the different architecture of the structures 1 and 2, both demonstrated distinctive electrochemical and charge-storage behaviors. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/626615 | ISSN: | 1528-7483 | DOI: | 10.1021/acs.cgd.2c00354 |
顯示於: | 化學系 |
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