Maqola

New Oxyhalide Solid Electrolytes with Enhanced Conductivity for All-Solid-State Batteries

Wei XueChongqing UniversityYanming CuiZhejiang Funlithium New Energy Technology Co., LtdZhixu LongChongqing UniversityHongyang ShanChongqing UniversityNur ChamidahFaculty of Engineering, Nara Women’s University, Kitauoya-nishimatchi, Nara 630-8263, JapanKentaro YamamotoFaculty of Engineering, Nara Women’s University, Kitauoya-nishimatchi, Nara 630-8263, JapanMasashi KotobukiBattery Research Center of Green EnergyHao LiKey Laboratory of Neutron Physics, Institute of Nuclear Physics and Chemistry, Academy of Engineering Physics, Mianyang, Sichuan 621999, ChinaNing HuHebei University of TechnologyShufeng SongChongqing University

The Journal of Physical Chemistry Lettersjournal2025en

Ochiq kirish: yoʻq

ABI

Annotatsiya

Departing from conventional Li–M–X6 frameworks, we develop a Li–M–X5 oxyhalide chemistry (Li3xTaO3xCl5–3x, 0.8/3 ≤ x ≤ 1.4/3) to overcome the conductivity limitation of halide-based solid electrolytes (SEs). The designed oxyhalide achieves record ionic conductivities of 9 mS cm–1 at 30 °C and 0.59 mS cm–1 at −35 °C, surpassing most reported halides. Through comprehensive characterization using X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and X-ray absorption spectroscopy (XAS), we confirm that oxygen incorporation reduces Ta–O/Ta–Cl coordination numbers and induces distorted O/Cl-containing polyhedra, collectively enhancing ion migration. Full ASSBs demonstrate excellent stable cycling with 100% capacity retention after long-term 3200 cycles at a substantial 4 C rate.

Hali tarjima qilinmagan

Mavzular

Advanced Battery Materials and Technologies Thermal Expansion and Ionic Conductivity Advancements in Battery Materials

Identifikatorlar

DOI: 10.1021/acs.jpclett.5c01778

Iqtiboslar va manbalar

0 ta iqtibos49 ta foydalanilgan manba