协调碳量子点提高了NiCo-LDH的性能,用于储能
Qi Chen1, Hui Pan2, Zhixin Chen3
1State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Journal of colloid and interface science
|November 5, 2023
概括
协调碳量子点 (CoCQDs) 增强-层双氧化物 (NiCo-LDH) 的能量储存. CoCQD可以提高导电性和稳定性,提高CoC@LDH电极的电容和循环性能.
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
- 纳米技术纳米技术
背景情况:
- 层状双氧化物 (LDHs) 为储能提供高特异电容.
- 低导电性和结构稳定性限制了LDH的性能,特别是速度能力和循环寿命.
研究的目的:
- 为了提高-层双氧化物 (NiCo-LDH) 的储能性能.
- 使用协调碳量子点 (CoCQDs) 提高NiCo-LDH的导电性和结构稳定性.
主要方法:
- CoCQDs与Ni和Co离子的联合电位,形成CoC@LDH复合电极.
- 制造具有不同含量 (n=0.5,1.0,2.0) 的CoCQD,用于性能研究.
- 电化学测试用于评估特定电容,速率性能和循环稳定性.
主要成果:
- CoC@LDH复合电极显著提高了导电性和结构稳定性.
- 1.0CoC@LDH电极在1Ag-1.1时达到1867Fg-1的特定电容.
- 在6000个周期以5 A g-1的速度后,观察到84.6%的优异容量保留,超过了基准 (49.5%).
结论:
- 通过协调,CoCQDs强烈地与NiCo-LDH纳米板结合,增强电化学特性.
- CoC@LDH复合材料代表了开发高性能伪电容材料的有希望的战略.
- 这种方法为先进的储能解决方案提供了新的途径.
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