合成高透性矿氧化物作为氧气演变反应和氧气减少反应的双功能电催化剂
Sangwoo Chae1, Akihito Shio2, Tomoya Kishida2
1SIT Research Laboratories, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan.
Materials (Basel, Switzerland)
|June 27, 2024
概括
这项研究合成了用于可充电氧电池的新型高氧氧化. 这些材料表现出有希望的双功能催化活性,适用于减少氧和演化反应,其中一种表现出卓越的性能.
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:
- 可充电的氧电池 (LOB) 依赖于高效的氧减少反应 (ORR) 和氧演化反应 (OER).
- 高合金和氧化物正在成为这些反应的有希望的电催化剂.
- 开发先进的电催化剂对于提高LOB性能和周期寿命至关重要.
研究的目的:
- 合成和描述新型高的矿氧化物.
- 研究这些材料在LOB中的ORR和OER的电催化性能.
- 为了比较不同高化合物的双功能催化活性.
主要方法:
- 合成的 CoSn (OH) 6 , (Co) 0.2 , (Cu) 0.2 , (Fe) 0.2 , (Mn) 0.2 , (Mg) 0.2 , (Sn) OH 6 , (CCFMMSOH) 和 (Co) 0.2 , (Cu) 0.2 , (Fe) 0.2 , (Mn) 0.2 , (Ni) 0.2 , (Sn) OH 6 , (CCFMNSOH) 这三种类型的化合物.
- 使用传输电子显微镜 (TEM) 和X射线衍射 (XRD) 进行表征.
- 使用线性扫描电压测量 (LSV) 评估电催化性能.
主要成果:
- 高氧化物CCFMMSOH和CCFMNSOH与立方晶体结构 (150-200纳米) 成功合成.
- CCFMMSOH和CCFMNSOH都显示了ORR和OER的双功能催化活性.
- 与CCFMMSOH相比,CCFMNSOH表现出优越的电催化性能.
结论:
- 新型高的矿氧化物显示出作为LOBs的双功能电催化剂的潜力.
- 组合调,特别是Ni的加入,增强了催化活性.
- 这些发现有助于为下一代储能设备开发先进材料.
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