电极由高能量密度全固态离子电池中无处不在的元素组成
Naoto Tanibata1, Naoki Nonaka2, Keisuke Makino2
1Department of Advanced Ceramics, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, Aichi, 466-8555, Japan. tanibata.naoto@nitech.ac.jp.
Scientific reports
|February 1, 2024
概括
这项研究介绍了单临床NaFeCl4作为全固态离子电池的安全,高能电极. 简单的粉末压缩实现了高能量密度,为先进的储能解决方案铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 高能量密度,安全和廉价的电池对于电动汽车和可再生能源储能至关重要.
- 传统的氧化物电极在能量密度和运行潜力方面存在局限性.
- 离子电池由于元素丰富,为离子电池提供了一个有希望的替代品.
研究的目的:
- 为了研究单一的NaFeCl4作为全固态离子电池的电极材料的潜力.
- 评估NaFeCl4.4的电化学性能和安全特性.
- 用简单的加工技术展示一种制造高性能电极的方法.
主要方法:
- 使用单一的NaFeCl4,一种热力学稳定和资源吸引力的铁氧化还原材料.
- 通过在室温和382 MPa下单轴压缩NaFeCl4粉末制造的电极.
- 完全固态电池系统在 333 K 的温度下运行,没有液态电解质.
主要成果:
- 每个正电极的高能量密度为281 Wh kg-1.
- 证明了Fe2+/3+氧化还原反应在3.45V的高电位与Na/Na+相比.
- 在单轴压缩下观察到NaFeCl4的高变形性 (99%的相对密度).
结论:
- 单晶NaFeCl4是一种可行且有前途的电极材料,用于安全,高能全固态离子电池.
- 使用丰富的元素和简单的加工方法为下一代能源存储提供了成本高效的方法.
- 高的运行潜力和能量密度突出显示了基电极的潜力.
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