20.500.12556/RUL-159759 Design of organic cathode material based on quinone and pyrazine motifs for rechargeable lithium and zinc batteries Despite the rapid expansion of the organic cathode materials field, we still face a shortage of materials obtained through simple synthesis that have stable cycling and high energy density. Herein, we report a two-step synthesis of a small organic molecule from commercially available precursors that can be used as a cathode material. Oxidized tetraquinoxalinecatechol (OTQC) was derived from tetraquinoxalinecatechol (TQC) by the introduction of additional quinone redox-active centers into the structure. The modification increased the voltage and capacity of the material. The OTQC delivers a high specific capacity of 327 mAh g$^{−1}$ with an average voltage of 2.63 V vs Li/Li$^+$ in the Li-ion battery. That corresponds to an energy density of 860 Wh kg$^{−1}$ on the OTQC material level. Furthermore, the material demonstrated excellent cycling stability, having a capacity retention of 82% after 400 cycles. Similarly, the OTQC demonstrates increased average voltage and specific capacity in comparison with TQC in aqueous Zn−organic battery, reaching the specific capacity of 326 mAh g$^{−1}$ with an average voltage of 0.86 V vs Zn/Zn$^{2+}$. Apart from good electrochemical performance, this work provides an additional in-depth analysis of the redox mechanism and degradation mechanism related to capacity fading. organic cathode pyrazine quinone catechol Li−organic battery Zn−organic battery aqueous electrolyte batteries electrodes electrolytes materials stability elektrokemija baterije vodna elektroliza organske katode true false true Angleški jezik Slovenski jezik Članek v reviji 2024-07-23 15:37:59 2024-07-23 15:38:00 2024-07-24 03:46:50 0000-00-00 00:00:00 2024 0 0 Str. 16029–16039 iss. 13 Vol. 16 Apr. 3, 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 544.5/.6 1944-8252 10.1021/acsami.3c16038 201905923 menart-et-al-2024-design-of-organic-cathode-material-based-on-quinone-and-pyrazine-motifs-for-rechargeable-lithium-and.pdf menart-et-al-2024-design-of-organic-cathode-material-based-on-quinone-and-pyrazine-motifs-for-rechargeable-lithium-and.pdf 1 7CAA93CA21DC4CEEB7B40FB35B7AB8C2 76abfc522a5549bf8625608c380d58ffa00b4fe3a53db5734541d2219e6f99ae fcb9354b-48f8-11ef-8f74-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=187946 https://pubs.acs.org/doi/10.1021/acsami.3c16038 0 67857969-48f9-11ef-8f74-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=187947 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0