和编的多孔碳基硫为高负载/硫电池的宿主
Taehong Kim1, Chae Young Lee1, Jiwon Choi1
1Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju 52828, Republic of Korea.
ACS applied materials & interfaces
|November 19, 2025
概括
研究人员开发了一种新的和编的多孔碳,用于高负载/硫 (Li/S) 电池. 这种材料能够在高速率下实现稳定的循环性能,这对于下一代储能至关重要.
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:
- /硫 (Li/S) 电池具有较高的理论能量密度和较低的成本,使其成为下一代应用的前景.
- 商业化需要具有稳定,高速循环性能和精益电解质的高负载硫阴极.
研究的目的:
- 为高负载Li/S电池开发稳定的硫主体材料.
- 为了评估Li/S电池的电化学性能,使用了一种新型的密封多孔碳硫宿主.
主要方法:
- 和二氧化碳的合成.
- 使用合成的碳主体制造高负载硫电极.
- 在各种硫含量和循环速率下对Li/S电池进行电化学测试.
主要成果:
- 带有4毫克-2厘米硫荷载的Li/S电池在1°C下稳定循环运行200个周期 (553 mAh g-1),每周期降解率为0.068%.
- 在更高的7毫克-2的负载下,电池的初始容量为1207 mAh-1g,在0.1C的100个循环后保持736 mAh-1g.
- 合碳宿主在稀缺电解质条件下促进了稳定的性能.
结论:
- 和配合的多孔碳是高负载Li/S电极的可行的硫宿主.
- 该材料能够实现稳定,高速循环,这对于实际的Li/S电池商业化至关重要.
- 这一进步支持开发高效,低成本的下一代电池.
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