More Like this

1. A highly stable and conductive cerium‐doped Li ₇ P ₃ S ₁₁ glass‐ceramic electrolyte for solid‐state lithium–sulfur batteries

   https://doi.org/10.1111/jace.19712  

   Mirtaleb, Amirhossein; Wang, Ruigang (June 2024, Journal of the American Ceramic Society)

   Abstract In this report, a facile wet chemical method using acetonitrile combined with thermal annealing was used to prepare Li₂S‐P₂S₅(LPS) based glass‐ceramic electrolytes with (1 wt%, 3 wt%, and 5 wt% Ce₂S₃) and without Ce₂S₃doping. The crystal structure, ionic conductivity, and chemical stability of Li₇P₃S₁₁glass‐ceramic electrolytes were examined at varying temperatures (250–350°C). The results indicated that the highest ionic conductivity of 3.15 × 10⁻⁴S cm⁻¹for pure Li₇P₃S₁₁was observed at a temperature of 325°C. By incorporating 1 wt% Ce₂S₃and subjecting it to a heat treatment at 250°C, the glass ceramic electrolyte attained a remarkable ionic conductivity of 7.7 × 10⁻⁴(S cm⁻¹) at 25°C. Furthermore, it exhibited a stable and extensive electrochemical potential range, reaching up to 5 volts when compared to the Li/Li⁺reference electrode. By tuning the glass transition and crystallization temperature, cerium doping seems to make Li₇P₃S₁₁more chemically stable, compared to its original 70Li₂S‐30P₂S₅counterpart. According to Raman and X‐ray photoelectron spectroscopy analyses, cerium doping inhibits the decomposition of highly conductive P₂S₇^4‐(pyro‐thiophosphate) to PS₄³⁻and P₂S₆⁴⁻. Doped LPS has a greater crystallinity and more uniform microstructure than pure LPS, according to XRD, Raman spectroscopy, and scanning electron microscopy analysis. Consequently, Li₇P_2.9Ce_0.1S₁₁electrolyte shows great potential as a solid‐state electrolyte for constructing high‐performance sulfide‐based all‐solid‐state batteries. 

   more » « less
2. Structural evolution during solution-based synthesis of Li ₇ P ₃ S ₁₁ solid electrolyte by synchrotron X-ray total scattering

   https://doi.org/10.1039/D3TA02326E  

   Shao, Bowen; Das, Ratnottam; Huang, Yonglin; Deng, Ruihao; Seelman, Sara; Han, Fudong (August 2023, Journal of Materials Chemistry A)

   Synchrotron X-ray total scattering and pair distribution function analysis are used to investigate the structural changes during solution synthesis of the Li₇P₃S₁₁solid electrolyte. 

   more » « less
3. Bandgap engineering in quasi-1D Zr _1−x Ti _x S ₃ (0 ≤ x ≤ 1) solid solutions

   https://doi.org/10.1039/d5tc02480c  

   Muratov, Dmitry S; Bianco, Ettore; Karpenkov, Dmitry; Castellero, Alberto; Lipatov, Alexey; Maurino, Valter; Sinitskii, Alexander (January 2025, Journal of Materials Chemistry C)

   We synthesized a series of Zr_1−xTi_xS₃solid solutions (0 ≤x≤ 1)viaa direct reaction between Zr–Ti alloys and sulfur vapor at 600 °C. These solid solutions have a tunable bandgap in the 1–2 eV range that linearly increases with the Zr content. 

   more » « less
4. A room temperature rechargeable Li ₂ O-based lithium-air battery enabled by a solid electrolyte

   https://doi.org/10.1126/science.abq1347  

   Kondori, Alireza; Esmaeilirad, Mohammadreza; Harzandi, Ahmad Mosen; Amine, Rachid; Saray, Mahmoud Tamadoni; Yu, Lei; Liu, Tongchao; Wen, Jianguo; Shan, Nannan; Wang, Hsien-Hau; et al (February 2023, Science)

   A lithium-air battery based on lithium oxide (Li₂O) formation can theoretically deliver an energy density that is comparable to that of gasoline. Lithium oxide formation involves a four-electron reaction that is more difficult to achieve than the one- and two-electron reaction processes that result in lithium superoxide (LiO₂) and lithium peroxide (Li₂O₂), respectively. By using a composite polymer electrolyte based on Li₁₀GeP₂S₁₂nanoparticles embedded in a modified polyethylene oxide polymer matrix, we found that Li₂O is the main product in a room temperature solid-state lithium-air battery. The battery is rechargeable for 1000 cycles with a low polarization gap and can operate at high rates. The four-electron reaction is enabled by a mixed ion–electron-conducting discharge product and its interface with air. 

   more » « less
5. NASICON Li _1.2 Mg _0.1 Zr _1.9 (PO ₄ ) ₃ Solid Electrolyte for an All‐Solid‐State Li‐Metal Battery

   https://doi.org/10.1002/smtd.202000764  

   Zhou, Qiongyu; Xu, Biyi; Chien, Po‐Hsiu; Li, Yutao; Huang, Bing; Wu, Nan; Xu, Henghui; Grundish, Nicholas S.; Hu, Yan‐Yan; Goodenough, John B. (September 2020, Small Methods)

   Abstract A thin solid electrolyte with a high Li⁺conductivity is used to separate the metallic lithium anode and the cathode in an all‐solid‐state Li‐metal battery. However, most solid Li‐ion electrolytes have a small electrochemical stability window, large interfacial resistance, and cannot block lithium‐dendrite growth when lithium is plated on charging of the cell. Mg²⁺stabilizes a rhombohedral NASICON‐structured solid electrolyte of the formula Li_1.2Mg_0.1Zr_1.9(PO₄)₃(LMZP). This solid electrolyte has Li‐ion conductivity two orders of magnitude higher at 25 °C than that of the triclinic LiZr₂(PO₄)₃.⁷Li and⁶Li NMR confirm the Li‐ions in two different crystallographic sites of the NASICON framework with 85% of the Li‐ions having a relatively higher mobility than the other 15%. The anode–electrolyte interface is further investigated with symmetric Li/LMZP/Li cell testing, while the cathode–electrolyte interface is explored with an all‐solid‐state Li/LMZP/LiFePO₄cell. The enhanced performance of these cells enabled by the Li_1.2Mg_0.1Zr_1.9(PO₄)₃solid electrolyte is stable upon repeated charge/discharge cycling. 

   more » « less