Electron-Conductive Metal–Organic Framework, Fe(dhbq)(dhbq = 2,5-Dihydroxy-1,4-benzoquinone): Coexistence of Microporosity and Solid-State Redox Activity,ACS Applied Materials & Interfaces

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Electron-Conductive Metal–Organic Framework, Fe(dhbq)(dhbq = 2,5-Dihydroxy-1,4-benzoquinone): Coexistence of Microporosity and Solid-State Redox Activity
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-08-05 , DOI: 10.1021/acsami.1c06571
Kazuki Kon ₁ , Kaiji Uchida ₁ , Kentaro Fuku ₁ , Shuntaro Yamanaka ₁ , Bin Wu ₁ , Daiki Yamazui ₁ , Hiroaki Iguchi ₁ , Hiroaki Kobayashi ₂ , Yoshiyuki Gambe ₂ , Itaru Honma ₂ , Shinya Takaishi ₁

Affiliation

Redox-active metal–organic frameworks (MOFs) have great potential for use as cathode materials in lithium-ion batteries (LIBs) with large capacities because the organic ligands can undergo multiple-electron redox processes. However, most MOFs are electrical insulators, limiting their application as electrode materials. Here, we report an electron-conductive MOF with a 2,5-dihydroxy-1,4-benzoquinone (dhbq) ligand, Fe(dhbq). This compound had an electrical conductivity of 5 × 10^–6 S cm^–1 at room temperature due to d−π interactions between the Fe ion and the ligand and the permanent microporosity. Fe(dhbq) had an initial discharge capacity of 264 mA h g^–1, corresponding to the two-electron redox process of dhbq.

中文翻译：

电子导电金属-有机骨架，Fe(dhbq)(dhbq = 2,5-Dihydroxy-1,4-benzoquinone)：微孔和固态氧化还原活性的共存

氧化还原活性金属-有机骨架（MOFs）作为大容量锂离子电池（LIBs）的正极材料具有巨大的潜力，因为有机配体可以进行多电子氧化还原过程。然而，大多数 MOF 是电绝缘体，限制了它们作为电极材料的应用。在这里，我们报告了一种具有 2,5-二羟基-1,4-苯醌 (dhbq) 配体 Fe(dhbq) 的电子导电 MOF。由于 Fe 离子与配体之间的 d-π 相互作用以及永久微孔，该化合物在室温下具有 5 × 10 ^–6 S cm ^{–1 的}电导率。Fe(dhbq) 的初始放电容量为 264 mA hg ^–1，对应于 dhbq 的双电子氧化还原过程。

更新日期：2021-08-19

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