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高性能可充电空气电池由铁启用,固定在化碳基质上,作为双功能电催化剂
Xianyu Shi1, Panpan Sun2, Xin Wang1
1College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, China.
Journal of colloid and interface science
|November 3, 2024
概括
一个新的Co3Fe7-NC-OAc催化剂显示了可充电空气电池的前景. 这种双功能电催化剂有效地催化了氧气减少和进化反应,提高了电池的性能和寿命.
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:
- 可充电的空气电池需要高效的双功能电催化剂来减少氧气 (ORR) 和氧气演变 (OER).
- 开发增强ORR和OER活动的催化剂对于提高电池性能至关重要.
研究的目的:
- 合成和评估一种新型的铁合金,该合金以添加碳 (Co3Fe7-NC-OAc) 作为双功能电催化剂.
- 为了研究可充电的空气电池中催化剂的性能.
主要方法:
- 使用铁 (II) 乙酸盐辅助策略合成Co3Fe7-NC-OAc催化剂.
- 对ORR和OER活动的电化学表征.
- 在液态和固态空气电池中测试催化剂的性能.
主要成果:
- Co3Fe7-NC-OAc表现出极好的ORR活性 (0.90V与RHE) 和OER活性 (310mV超电位).
- 催化剂表现出高动力电流密度和高效的O2扩散,使得高功率密度 (高达587mW cm-2).
- 合成的催化剂在液态气电池中表现出了显著的循环性能.
结论:
- Co3Fe7-NC-OAc催化剂是一种高效的双功能电催化剂,用于可充电Zn-空气电池.
- 铁 (II) 乙酸策略有效地增强了催化剂孔结构和电子合,促进了催化活性.
- 这项工作为开发用于储能应用的先进电催化剂提供了新的途径.
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