以1,4-二氰基-2,3,5,6-四羥基苯合成之金屬有機材料應用於鋰離子電池之電極

Metal-Organic Materials Based on 1,4-Dicyano-2,3,5,6-tetrahydroxybenzene as Electrodes for Lithium-Ion Batteries

張承翰(Cheng-Han Chang)

指導教授 ： 陳登豪

淡江大學/理學院/化學學系碩士班/碩士(2020年)

https://doi.org/10.6846/TKU.2020.00235

摘要

鋰離子電池因為具有高能量密度、大電流輸出以及循環壽命長等優點，在現今已被廣泛應用在許多儲能設備及系統上，並且大大提升了科技的發展。而有機材料所形成之電極在近期吸引相當多的關注，其擁有低重量、低毒性、低成本等優點。然而，需要解決的是有機材料在電解液中的高溶解度，因此將有機單體合成聚合物以降低溶解度來維持電池之效率。
利用具有氧化還原活性之醌類似物做為配位聚合物的建構組元。因此我們設計了1,4-二氰基-2,3,5,6-四羥基苯 (LH4)做為有機配位基，再與銅二價離子、鈷二價離子以及鋅二價離子配位形成線性配位聚合物，抑或是三維的金屬有機骨架。此些金屬有機材料被做為鋰離子電池之陰極，並具有高循環壽命及可逆之充放電表現。

關鍵字

金屬有機配位聚合物 ； 氧化還原活性 ； 鋰離子電池 ； 電極材料

並列摘要

Lithium-ion batteries (LIBs) have been employed in a wide range of energy-storage applications and they also improve the technological development greatly. They have been used in our daily life because of their high energy density, large output current, and long cycle life. Organic electrode materials, which feature lightweight, low cost, and low environmental impact, are attracting more and more attention. However, the high solubility of organic compounds in electrolytes is a significant issue to be solved. It is an operative strategy to polymerize redox-active monomers to decrease the solubility and maintain the high capacity of organic electrodes.
Hydroquinone derivatives may be used as building blocks for coordination polymers to perform multielectron-transfer processes. Herein, we synthesized a quinone-based ligand 1,4-dicyano-2,3,5,6-tetrahydroxybenzene (LH4) which was used to connected to copper(II), cobalt(II) and zinc(II) to form one-dimensional coordination polymers (CPs) or metal-organic frameworks (MOFs). These materials were employed as cathode for LIBs and the results displayed high cycling stability and reversible charge-discharge behaviors.

並列關鍵字

Coordination polymers ； Redox activity ； Lithium-ion batteries ； Electrode materials

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