硫化物固态电解质和富含的阴极之间的接口的多相功能调节
Haoyang Yuan1, Wenjun Lin2, Tao Huang2
1Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, Fudan University, Shanghai 200438, China.
ACS nano
|February 11, 2026
概括
研究人员开发了一种混合涂层,以提高高能固态电池的稳定性. 这种涂层提高了富含的阴极和硫化物电解质的性能和寿命,这对于下一代能源存储至关重要.
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
- 电池技术 电池技术
背景情况:
- 基于高能量密度的硫化物固态电池需要将富含的阴极与硫化物固态电解质相结合.
- 氧化物阴极和硫化物电解质之间的界面降解限制了电池的性能.
研究的目的:
- 设计一种混合涂层,以应对富含的阴极和硫化物固态电解质之间的界面降解.
- 提高固态电池的稳定性和电化学性能.
主要方法:
- 设计了一种混合涂层,该涂层包含聚烯 (有机) 和Lix (无机).
- 该涂层应用于多晶和单晶丰富的阴极.
- 评估了电化学性能,包括特定放电能力和循环寿命.
主要成果:
- 混合涂层通过填补表面沟和减轻空间电荷层的形成,提高了结构和化学稳定性.
- 多晶阴极在1°C时达到174.2mAhg-1和在5°C时2000次循环后保持76.8%.
- 单晶阴极在5°C下保持了80%的保留力,长达4778个周期.
结论:
- 多相涂层范式有效地解决了硫化物固态电解质和富含的分层氧化物阴极之间的界面挑战.
- 这种方法显著提高了固态电池的循环寿命和性能.
- 工程混合涂层为开发先进的储能解决方案提供了一个有前途的战略.
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