| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Thermodynamics of Materials in Extreme Environments
|
| Presentation Title |
In-situ Hydrothermal Synthesis Calorimetry on Nonclassical Pathways of Nickel–aluminum Layered Double Hydroxide (NiAl-LDH) Formation |
| Author(s) |
Xianghui Zhang, Cody Cockreham, Esra Y. Mertsoy, Hui Sun, Xiaofeng Guo, Hongwu Xu, Di Wu |
| On-Site Speaker (Planned) |
Di Wu |
| Abstract Scope |
Nickel–Aluminum layered double hydroxides (NiAl-LDHs) demonstrate competitive energy storage performance as capacitive electrode materials. Our earlier studies elucidated the energetics-structure-performance relationships of NiAl-LDHs with different Ni/Al ratios, from 2 to 4. Here, coupling in situ hydrothermal synthesis calorimetry, ex situ XRD, DRIFTS, SEM and TEM we further reveal the energetic pathways of formation of NiAl-LDHs modulated with different molecular modifiers (urea, hexamethylenetetramine and NaOH) under hydrothermal conditions within autoclaves in real-time. Our results highlight that subtle variations in type and concentration of molecular modifiers lead to rerouted formation pathways, clearly evidenced by the in situ calorimetric data. |