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2CO3纳米复合材料作为高能量密度离子电池的阴极补充材料

Chenkun Li^1,2, Yao Xiao^2,3, Xiaosong Zhang²

¹School of Materials Science and Engineering, Shanghai University, Shanghai 200444, People's Republic of China.

ACS applied materials & interfaces

|September 14, 2023

概括

研究人员开发了一种新碳酸/碳纳米复合物,用于补充电池中的. 这种材料增强了初始容量,并提高了长期循环稳定性,提高了能量密度和电池寿命.

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:

在离子电池 (LIB) 中不可逆转的容量损失会降低能量密度.
传统的补充材料面临着复杂的准备和不稳定性等挑战.
开发稳定高效的补充对于LIB性能至关重要.

研究的目的:

合成并利用一种新碳酸/碳纳米复合物作为补充材料.
为了解决传统补充方法的局限性.
改善LIBs的能量密度和循环寿命.

主要方法:

合成一个Li₂CO₃/Ketjen黑 (KB) 纳米复合物使用高速球磨.
纳米复合材料的电化学性质的表征.
将纳米复合材料集成到完全的LIB细胞中 (NCM523阴极,石墨阳极).

主要成果:

2 / CO3 / KB纳米复合材料表现出降低的分解潜力 (3.8V) 和高的特异性容量 (645.2 mAh·g-1).
充满补充材料的完整电池显示了44mAh·g-1的初始容量增加.
在100个周期内,容量保留率提高了26.4%.

结论:

2 / CO3 / KB纳米复合材料是一种有效的补充材料.
这种方法提供了一个实际的途径,以提高LIB能量密度和循环性能.
该研究为先进的离子电池开发提供了可行的策略.

关键词:

石化二氧化碳三氧化用球磨机进行的.阴极补充充补充离子电池是一种离子电池.纳米材料的使用方法

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