A5084946972- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Iron-based superconductors research
- Rare-earth and actinide compounds
- Perovskite Materials and Applications
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Corporate Taxation and Avoidance
- Intellectual Capital and Performance Analysis
- Advanced Battery Technologies Research
- Solid-state spectroscopy and crystallography
- Magnetic and transport properties of perovskites and related materials
- Catalytic Processes in Materials Science
- Physics of Superconductivity and Magnetism
Hefei Institutes of Physical Science
2019-2023
High Magnetic Field Laboratory
2019-2023
Yunnan University
2020-2023
Minzu University of China
2020-2023
Chinese Academy of Sciences
2019-2023
University of Science and Technology of China
2019
Perovskite materials, as a multifunctional material, have been widely applied in the field of electrochemistry due to its ion migration properties. Although lead based halide perovskite has anode lithium battery, it is necessary develop new lead-free materials because instability and environmental unfriendliness. Herein, we facile grinding method prepare ultrahigh Li+ concentration doping Cs2NaBiCl6 powders, which are used material battery. The assembled battery possesses stable specific...
Halide perovskite materials have been used in the field of lithium-ion batteries because their excellent ion migration characteristics and defect tolerance. However, current lead-based perovskites for are highly toxic, which may hinder pace further commercialization. Therefore, it is still necessary to develop a new type stable pollution-free anode material. Herein, we first time use high-concentration doped rare-earth-based double Cs2NaErCl6:Li+ as negative electrode material battery....
The rational design of the unique morphology particles has been considered as key to improving structural stability spinel LiMn2O4 cathode materials for Li-ion batteries. Herein, a facile solid-state combustion process, combined with Cr and Al co-doping approach, is proposed prepare various LiCr0.01AlxMn1.99-xO4 (x ≤ 0.10) good crystallinity. facilitates formation single crystal truncated octahedral morphology. This endows as-prepared abundant {111} planes Mn dissolution reduction few {100}...
The temperature dependence of the upper critical field ($H_{c2}$) in RbCr$% _{3}$As$_{3}$ single crystals ($T_{c}\approx $ 7.3 K) has been determined by means magnetoresistance measurements with down to 0.35 K static magnetic fields up 38 T. was applied both for directions parallel ($H\parallel c $, $H_{c2}^{\parallel c}$) and perpendicular ($H\perp c$, $H_{c2}^{\perp Cr chains. curves c}(T)$ cross at $\sim 5.5 K. As a result, anisotropy parameter $\gamma (T)=H_{c2}^{\perp...
The electronic and superconducting properties of Fe 1– δ Se single-crystal flakes grown hydrothermally are studied by the transport measurements under zero high magnetic fields up to 38.5 T. results contrast sharply with those previously reported for nematically ordered FeSe chemical-vapor-transport (CVT) growth. No signature nematicity, but an evident metal-to-nonmetal crossover increasing temperature, is detected in normal state present hydrothermal samples. Interestingly, a higher...
亚微米去顶角八面体 LiNi 0.08 Mn 1.92 O 4 正极材料制备及高温电化学性能 梁其梅 a 郭昱娇 b 郭俊明 * ,a 向明武 刘晓芳 白玮 宁平 ( 云南民族大学 生物基材料绿色制备技术国家地方联合工程研究中心 昆明 650500) 昆明理工大学 环境科学与工程学院 650093) 摘要 采用低温固相燃烧法快速制备了一种具有{111}、{110}和{100}晶面的去顶角八面体 LiNi0.08Mn1.92O4(LNMO)正 极材料, 其高暴露{111}晶面可以减少充放电过程中 的溶解, 面积相对较小的{110}和{100}晶面可增加 Li ＋ 快速扩散 的通道.测试结果表明, 所合成的 LNMO 具有 LiMn2O4 特有的立方晶系结构, 其颗粒尺寸为亚微米级.LNMO 的高温电 化学性能优异, 在 55 ℃, 1 和 5 C 的首次放电比容量分别为 109.9 98.0 mAh/g, 分别循环 300 次后容量保持率为 75.8% 80.5%; 即使在 10 15 下分别循环 1000 次后仍具有 48.4%和 49.4%的容量保持率, 而未掺杂的 于 循环...
From the structural design of materials, preparation functional materials with specific morphology and crystal structure is most effective way to improve rate performance cyclability lithium ion batteries cathodes. Herein, various truncated octahedral LiNi0.05FexMn1.95-xO4 (x≤0.12) cathode {111}, {110} {100} facets were fabricated by a facile solid-state combustion method. The results show that Ni-Fe co-doping content 0.05 can effectively enhance bonding strength spinel LiMn2O4 defending...