Unprecedented Multifunctionality in 1D Nb1‐xTaxS3 Transition Metal Trichalcogenide Alloy. (21st June 2022)

• Record Type: Journal Article
• Authors: Hemmat, Zahra; Ahmadiparidari, Alireza; Wang, Shuxi; Kumar, Khagesh; Zepeda, Michael; Zhang, Chengji; Dandu, Naveen; Rastegar, Sina; Majidi, Leily; Jaradat, Ahmad; Ngo, Anh; Thornton, Katsuyo; Curtiss, Larry A.; Cabana, Jordi; Huang, Zhehao; Salehi‐Khojin, Amin
• Is Part Of: Advanced functional materials. Volume 32:Number 34(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-06-21
• Subjects: 1D materials -- alloys -- charge density wave -- CO 2 reduction -- current density -- lithium–air batteries -- thermal stability -- transition metal chalcogenides; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202205214
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: 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), Nb1‐ x Ta x S3, 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. Abstract : Nanofibers of transition metal trichalcogenide, Nb1– x Ta x S3 are synthesized with outstanding characteristics including: (i) stability of sheet resistance versus bending cycles tested up to 90‐cycles and air‐stability up to 60‐days, (ii) breakdown current‐density, (iii) thermal stability up to ≈800 K, (iv) activity for CO2 reduction reaction, and (v) battery performance in high‐rate Li‐air system.