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冷等离子激活在使用过的离子电池中的导电剂转化为空气电池的双功能氧降低/进化电催化剂
Yifan Liu1, Xiangqun Zhuge1, Tong Liu1
1Jiangsu Province Engineering Research Centre of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, PR China.
Journal of colloid and interface science
|March 30, 2024
概括
从使用过的离子电池中回收的黑碳被转化为有效的双功能催化剂,用于氧反应. 这项创新支持循环经济,通过从电池废物中创造有价值的材料.
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
- 可持续化学 可持续化学
背景情况:
- 使用过的离子电池含有有价值的过渡金属和材料.
- 回收---- (NCM) 氧化物等正极材料提供经济和环境的好处.
- 从废物中开发高效的催化剂对于循环经济至关重要.
研究的目的:
- 为了利用NCM阴极回收的碳黑废物.
- 开发用于氧减少反应 (ORR) 和氧演化反应 (OER) 的双功能催化剂.
- 研究这些催化剂在空气电池中的性能.
主要方法:
- 使用过的NCM阴极材料的化学回收,以获得含有黑碳的漏废物.
- 轻松冷等离子激活黑碳,形成RCA-30.
- 在性电解质中对ORR/OER活性进行RCA-30的电化学表征.
- 使用RCA-30作为阴极催化剂制造和测试空气电池.
主要成果:
- 活性炭黑 (RCA-30) 证明了高效的ORR/OER双功能性.
- RCA-30在10 mA cm-2.2时实现了0.74 V的ORR半波电位和360 mV的OER超电位.
- 带有RCA-30阴极的气电池显示出1.48V的开放电路潜力和100小时的稳定循环.
- 催化剂使得功率密度为92 mW cm-2和放电容量为640 mAh/g.
结论:
- 来自NCM电池回收的碳黑废物可以有效地转化为高性能双功能ORR/OER催化剂.
- 冷等离子激活,加上兴奋剂和表面金属氧化物激活,增强了催化性能.
- 这种方法有助于离子电池的循环经济,通过为储能应用的废物创造价值.
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