1D materials, such as nanofibers or nanoribbons are considered as the future ultimate limit of downscaling for modern electrical and electrochemical devices. Here, for the first time, nanofibers of a solid solution transition metal trichalcogenide (TMTC), Nb_1-xTa_xS₃, are successfully synthesized with outstanding electrical, thermal, and electrochemical characteristics rivaling the performance of the-state-of-the art materials for each application. This material shows nearly unchanged sheet resistance (≈740 Ω sq⁻¹) versus bending cycles tested up to 90 cycles, stable sheet resistance in ambient conditions tested up to 60 days, remarkably high electrical breakdown current density of ≈30 MA cm⁻², strong evidence of successive charge density wave transitions, and outstanding thermal stability up to ≈800 K. Additionally, this material demonstrates excellent activity and selectivity for CO₂ conversion to CO reaching ≈350 mA cm⁻² at −0.8 V versus RHE with a turnover frequency number of 25. It also exhibits an excellent performance in a high-rate Li–air battery with the specific capacity of 3000 mAh g⁻¹ at a current density of 0.3 mA cm⁻². This study uncovers the multifunctionality in 1D TMTC alloys for a wide range of applications and opens a new direction for the design of the next generation low-dimensional materials.

中文翻译：

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一维 Nb1-xTaxS3 过渡金属三硫属化物合金具有前所未有的多功能性

一维材料，例如纳米纤维或纳米带，被认为是现代电气和电化学设备缩小尺寸的未来极限。在这里，第一次成功合成了固溶体过渡金属三硫属化物 (TMTC) 纳米纤维 Nb _{1- x} Ta _x S ₃，其具有出色的电学、热学和电化学特性，可与现有技术相媲美。每个应用程序的艺术材料。这种材料显示出几乎不变的薄层电阻 (≈740 Ω sq ^-1 ) 与弯曲循环测试高达 90 个循环，在环境条件下稳定薄层电阻测试长达 60 天，非常高的 ≈30 MA cm ^{-2的电击穿电流密度}，连续电荷密度波跃迁的有力证据，以及高达 ≈800 K 的出色热稳定性。此外，该材料表现出优异的活性和选择性，将 CO ₂转化为 CO，在 -0.8 V 与 RHE 相比，在 -0.8 V 时达到 ≈350 mA cm ^-2，具有周转频率数为25。在0.3 mA cm ^{-2的电流密度下，它在比容量为3000 mAh g -1}的高倍率锂空气电池中也表现出优异的性能。这项研究揭示了一维 TMTC 合金在广泛应用中的多功能性，并为下一代低维材料的设计开辟了新方向。