相关实验视频
Updated: Jan 20, 2026
Synthesis Of A TiIII Metallocene Using Schlenk Line Technique
Published on: April 30, 2023
通过调节AB型Ti-Fe-Mn合金中的Ti含量来调整相位和格子调整,以优化激活和循环稳定性
Xin Ding1,2, Xiangfeng Ma1,2, Peng Zhang1
1National Key Laboratory for Precision Hot Forming, Harbin Institute of Technology, Harbin, 150001, P. R. China.
优化铁 (TiFe) 储合金需要调整含量. 增加的Ti含量提高了固定应用的结构稳定性和循环性能.
科学领域:
- 材料科学 材料科学 材料科学
- 储存技术 储存技术
- 固态化学 固态化学
背景情况:
- 基于TiFe的AB型合金对于静止储存至关重要.
- 优化激活和周期寿命是大规模应用的关键挑战.
研究的目的:
- 研究TiFe合金中相组成,格子大小和激活/循环稳定性之间的相关性.
- 操纵Ti含量以提高合金性能.
主要方法:
- 在TiFe合金中含量的系统变化.
- 对表面被动膜 (TiO2) 的分析.
- 扩散的第一原则计算 (密度函数理论).
- 格子常数测量和循环稳定性测试.
主要成果:
- 增加的Ti含量使TiO2被动膜变厚,延长激活延迟时间.
- 在C14 Laves阶段,促进的扩散.
- 更高的Ti含量扩展了TiFe网格,减少了循环应变,并在50个循环中将容量保留率从92%提高到96%.
- Ti53 ((Fe0.8Mn0.2) 47合金表现出极好的激活性,容量和稳定性.
结论:
- 含量是优化TiFe合金激活和周期寿命的关键因素.
- 格子的膨胀和被动膜特性显著影响储能性能.
- 开发的Ti53 ((Fe0.8Mn0.2) 47合金是静止存的有希望的候选者.
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