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具有MBA添加剂的低成本水性电解质,用于统一和稳定的沉积
Wenyan Chen1, Zhibo Xie1, Haichao Chen
1Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
ACS applied materials & interfaces
|June 1, 2024
概括
添加剂N,N-甲基二 (烯胺) (MBA) 通过抑制进化和树突来改善水性离子电池. 这使得在实际应用中可以使用无树的阳极和稳定的电池性能.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
背景情况:
- 水性离子电池 (AZIB) 提供安全性和成本优势,但面临着进化和树突形成等阳极挑战.
- 这些问题限制了AZIBs的实际应用和长期稳定性.
研究的目的:
- 调查使用N,N-甲基二 (烯胺) (MBA) 作为增强AZIB性能的添加剂.
- 为了减轻进化,接口腐蚀和阳极上的树状物生长.
主要方法:
- 在水性电解质中引入含有 -CONH- 组的 MBA 添加剂.
- 使用现场光学显微镜观察沉积和树岩形成.
- 测试Zn//Ti不对称和Zn//Zn对称电池,以及Zn//MnO2全电池.
主要成果:
- MBA添加剂通过与水形成键,有效抑制进化和接口腐蚀.
- 现场显微镜证实了均的沉积,并抑制了树的生长.
- Zn//Ti电池实现了99.5%的/剥离效率; Zn//Zn电池显示了超过1000小时的稳定性.
- 用MBA添加剂,Zn//MnO2全细胞表现出700个周期的稳定性能.
结论:
- MBA增材工程成功创建了没有树的阳极.
- 开发的战略显著提高了水性离子电池的循环稳定性和整体性能.
- 这种方法对先进的AZIB的实际应用具有前景.
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