About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2026 - In-Situ Characterization Techniques
|
| Presentation Title |
Influence of CuO on the Structural and Chemical Evolution of Co3O4 in Thermal Cycles |
| Author(s) |
Yuxiang Peng, Lyu Zhou, Cheng-Chu Chung, Chirag Saharan, Sankeerthana Manchikatla, Xianghui Xiao, Zhongshu Ren, Hui Zhong, Sanjit Ghose, John Trunk, Jianming Bai, Shuang Cui, Katherine Jungjohann , Judith Vidal, Mingyuan Ge, Karen Chen-Wiegart |
| On-Site Speaker (Planned) |
Yuxiang Peng |
| Abstract Scope |
Thermochemical energy storage requires materials with high thermal stability and reversible redox chemistry. Cobalt oxide (Co3O4) is often considered a model candidate for long-term heat storage, but pure Co3O4 suffers from sluggish redox kinetics during repeated cycling. To address this limitation, CuO was introduced to form a Co3O4–CuO composite, and its structural, chemical, and phase evolution during cycling were investigated. Thermogravimetric analysis and advanced in situ synchrotron techniques were employed, including transmission X-ray microscopy, X-ray diffraction, and X-ray absorption spectroscopy. Interfacial ionic mixing and interdiffusion between Co3O4 and CuO occur during thermal cycling; while CuO is redox-inactive, it enhances oxygen mobility in Co3O4, improving kinetics, reducing thermal hysteresis, and stabilizing the microstructure over cycling. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Energy Conversion and Storage, High-Temperature Materials |