| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
N-8: Alkaline Stable N-Bridged Triazine Framework Membranes for Rechargeable Anthrarufin Flow Batteries |
| Author(s) |
Jeet Sharma, Vaibhav Kulshrestha, Richa Gupta, Kothandaraman Ramanujam |
| On-Site Speaker (Planned) |
Jeet Sharma |
| Abstract Scope |
A durable sulfonate-ammonium ion-pair membrane bearing triazine organic framework is designed for alkaline anthrarufin flow batteries. With dual ion-exchange architectures formed through quadrupole van der Waals H-bonding interactions, the all-hydrocarbon TOF-based PEMs (sTOF’s) surpass the Nafion-117 in terms of energy efficiency (>80%), capacities and peak power delivery. The physicochemical studies evidenced highest ion-exchange capacity of >2.1 meq g-1 allowing to achieve electrolyte utilization of ⁓100%. Moreover, >97% capacities were retained for ⁓3000 cycles. Rate capability illustrates that with sTOF-5, the RFB can work at low overpotentials ≤200 mV and could improve battery life. With sTOF-5, the cell delivered a peak power of 2.3 W which is ⁓59% higher than corresponding cell with Nafion-117 (1.45 W). The afterlife performance of used sTOF-5 revealed efficiencies equivalent to fresh Nafion-117 and surpassed bearing >50% capacity. These attributes justify the robustness of prepared TOF membrane for alkaline flow batteries. |