Vinícius Martins

Western University

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Qingsong Tu

Rochester Institute of Technology

Yining Huang

Western University

Xiaoge Hao

Western University

Jackson A. L. C. Resende

Universidade Federal de Mato Grosso

Yi Guan

Western University

Célia M. Ronconi

Universidade Federal Fluminense

Tsun‐Kong Sham

Western University

Enzhong Jin

Western University

Jiamin Fu

Western University

Zhi Liang Dong

Western University

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Western University

Chinese Academy of Sciences

Technical Institute of Physics and Chemistry

Huazhong University of Science and Technology

University of Chinese Academy of Sciences

Tsinghua University

Universidade Federal Fluminense

Sichuan University

Rochester Institute of Technology

Lawrence Berkeley National Laboratory

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Structural insight and modulating of sulfide-based solid-state electrolyte for high-performance solid-state sodium sulfur batteries

Nano Energy (2024)

Zhi Liang Dong Yi Yuan Vinícius Martins Enzhong Jin Yi Gan

Room-temperature (RT) solid-state sodium-sulfur batteries (SSNSBs) are one of the most promising next-generation energy storage systems because of their high energy density, enhanced safety, cost-efficiency, and non-toxicity. While most of the studies for SSNSBs focused on designing and developing sulfur cathodes, we carve out a new path to understanding and modulating the structures and properties of sulfide solid-state electrolytes (SSEs) for achieving high-performance SSNSBs. A novel cation and anion co-doped approach was developed to enhance the ionic conductivity and expand the electrochemical stability of sulfide SSEs, and eventually improve the electrochemical performance of SSNSBs. The crystal structure and local structure of the cation/anion co-doped sulfide SSEs have been studied in detail combined with the density functional theory (DFT) calculations for mechanism understanding. SSNSBs incorporating co-doped sulfide SSEs demonstrate high capacity and stable cycling performance, even at high rates, which is at the top of the reported performances in the literature. Our novel approach for cation and anion-tuned SSEs demonstrates excellent ionic conductivity and electrochemical stability, paving a new way for the next generation of solid-state sodium batteries.

Fast ion conductor

Sodium sulfide

10.1016/j.nanoen.2024.109871

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A series of coordination networks constructed from the rigid ligand 4,4′-ethynylenedibenzoate: topological diversity, entanglement, supramolecular interactions and photophysical properties

CrystEngComm (2017)

Vinícius Martins Jackson A. L. C. Resende Célia M. Ronconi

Four coordination networks (CNs), i.e., [Co(edb)(H2O)(Py)2], 3; [Cd(edb)(DMSO)2]·0.5(DMSO), 4; [Er2(edb)3(DMSO)2(H2O)2], 5; and [Gd2(edb)3(H2O)4], 6 (edb2− = 4,4′-ethynylenedibenzoate), were synthesized and structurally characterized, and the luminescence properties of CNs 4 and 5 were investigated. In CN 3, the ligand adopts a bridging coordination mode that connects one Co(II) ion to another, resulting in a 1D CN. CNs 4 and 5 contain binuclear centers that are linked to four ligands in the chelating and bridging coordination modes. CN 4 has a 2D → 3D inclined polycatenated structure, whereas CN 5 exhibits a 3D network because the voids created by the long ligand are stabilized by the π–π stacking interactions, thereby avoiding the entanglement of the structure. CN 6 has a paddle-wheel structure with a two-fold interpenetrated rob topology. The photophysical properties of the compound H2edb and CNs 4 and 5 were studied in the solid state. Compound 2 (H2edb) displays strong absorption bands at 325 and 350 nm and emission at 385 nm. Upon complexation with Er(III), the emission was quenched. The emissions of CN 4 were due to the intraligand transitions.

Bridging ligand

10.1039/c7ce00306d

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Citations (12)