纳米/减少氧化石墨烯复合阳极用于高性能所有固态电池
Ayush Morchhale1, Dawoon Jang1, Jun Wei Yap1
1Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, Ohio 43210, USA. kim.6776@osu.edu.
概括
这项研究介绍了一种新的固态电池阳极,使用涂有氧化 (SiOx) 的纳米 (n-Si),并固定在减少的氧化石墨烯 (rGO) 上. 这种复合阳极与裸体n-Si相比显示了更好的性能和寿命.
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
- 纳米技术纳米技术
背景情况:
- (Si) 是用于高容量电池的有前途的阳极材料.
- 阳极由于在化/脱过程中体积膨胀大,因此周期寿命较低.
- 开发稳定和高性能基阳极对于下一代能源存储至关重要.
研究的目的:
- 开发一种使用纳米 (n-Si) 进行固态电池的强大高性能阳极.
- 为了提高阳极的电化学性能和循环稳定性.
- 调查SiOx外和减少的氧化石墨烯 (rGO) 支持在增强阳极特性中的作用.
主要方法:
- 水热自组装被用来合成被SiOx外封装并固定在rGO上的n-Si.
- 复合材料的特征是使用各种分析技术.
- 用硬币电池作为固态电池阳极来评估电化学性能.
主要成果:
- 与裸体n-Si相比,n-Si/SiOx/rGO复合阳极显示出显著改善的速率能力和周期寿命.
- 观察到强大的Si-O-C结合,有助于阳极的结构完整性.
- rGO基板提供了机械增强,并促进了电子的快速传输.
结论:
- 开发的n-Si/SiOx/rGO复合材料是固态电池的一个有前途的阳极材料.
- 封装和定策略有效地减轻了的体积扩张问题.
- 这种方法为制造先进电池的高性能和耐用基阳极提供了可行的途径.
更多相关视频
相关概念视频
Batteries and Fuel Cells
28.0K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
28.0K
Network Covalent Solids
14.6K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
14.6K


