回收消耗的三极阴极到氧的进化催化剂,用于纯水的阳离子交换膜电解
Liyue Zhang1,2, Qiucheng Xu2,3, Shuting Wen1
1Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
ACS nano
|August 12, 2024
概括
将废弃的离子电池 (LIB) 回收成化三元金属氧化物,可以产生高效的氧化水催化剂. 这些催化剂可以通过电解产生绿色,性能优于贵金属.
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
- 可持续能源 可持续能源
背景情况:
- 使用过的离子电池 (LIB) 带来了环境挑战.
- 高效的电催化剂对于通过水电解产生绿色气至关重要.
- 开发用于催化剂合成的可持续路线是一个关键的研究领域.
研究的目的:
- 将废弃物LIB回收成高性能氧化水电催化剂.
- 研究化三元金属氧化物 (F-TMO) 对于纯水电解的潜力.
- 为了比较F-TMO催化剂与贵金属催化剂 (如IrO2.2) 的性能.
主要方法:
- 将已使用的LIBs转换为F-TMO.
- 使用离子交换膜制造的氧化水催化剂.
- 纯水电解的催化剂的电化学测试.
- 耐用性和稳定性的评估.
主要成果:
- 优化的F-TMO催化剂在2.56V时实现了3.0A cm-2的电流密度.
- 催化剂表现出极好的耐用性 (>300小时在0.5 A cm-2),超过了IrO2.2.
- 与其他金属氧化物相比,F-TMO具有更高的稳定性值 (2.4 × 106).
- 一个人工赋予的接口层在操作期间稳定了活跃站点.
结论:
- 回收使用的LIBs提供了一条可持续的途径,以获得有价值的电催化剂.
- 来自LIBs的F-TMO是纯水电解的强大而高效的催化剂.
- 这项技术为工业规模的绿色生产提供了巨大的潜力.
相关概念视频
03:00Electrolysis
26.2K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
26.2K
01:08Electrodeposition
616
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...
616
02:47Voltaic/Galvanic Cells
56.9K
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
56.9K