| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
H-10: Synthesis of Nanoscale Layered Oxides for Charge Storage Applications |
| Author(s) |
Abraham Ebunu, River Pao, Flint Madeleine , Kun Wang, Scott Misture |
| On-Site Speaker (Planned) |
Abraham Ebunu |
| Abstract Scope |
Perovskite-type oxides such as layered Ca3Mn2O7 can be synthesized using solid state and chemical methods yielding highly crystalline powders. Subsequent protonation of the surfaces and interlayers of the layered structures improves their electrochemical response, a likely result of Mn reduction to form some fraction of Mn3+ ions. The poster will summarize the phase assemblages, powder morphologies and electrochemical responses obtained from the Ruddlesden-Popper and Aurivillius families of layered oxides. SEM, S/TEM, Raman and XRD together suggest that surface protonation is a key reaction, and results to date show that it is feasible to double the electrochemical capacitance by judicious surface treatment of the parent powders. |