2023-10-05 カリフォルニア大学サンディエゴ校(UCSD)
◆このデバイスは、カーボンファイバーの電極と導電性ポリマーと還元グラフェン酸化物から成るコーティングを使用しており、効率的なイオンフローとエネルギー貯蔵能力を向上させています。将来の研究では、エネルギーデンシティの向上を目指し、バッテリーパックと競合する性能を目指す予定です。
＜関連情報＞
- https://today.ucsd.edu/story/new-energy-storing-material-could-also-be-used-to-build-electronic-gadgets
- https://www.science.org/doi/10.1126/sciadv.adh0069
多機能効率を高めるために界面を強化した構造的擬似コンデンサ。 Structural pseudocapacitors with reinforced interfaces to increase multifunctional efficiency
Lulu Yao ,Kai Zheng ,Nandu Koripally ,Naresh Eedugurala ,Jason D. Azoulay ,Xinyu Zhang ,and Tse Nga Ng
Science Advances Published:23 Jun 2023
DOI:https://doi.org/10.1126/sciadv.adh0069
Abstract
Structural supercapacitors hold promise to expand the energy capacity of a system by integrating load-bearing and energy-storage functions in a multifunctional structure, resulting in weight savings and safety improvements. Here, we develop strategies based on interfacial engineering to advance multifunctional efficiency. The structural electrodes were reinforced by coating carbon-fiber weaves with a uniquely stable conjugated redox polymer and reduced graphene oxide that raised pseudocapacitive capacitance and tensile strength. The solid polymer electrolyte was tuned to a gradient configuration, where it facilitated high ionic conductivity at the electrode-electrolyte interfaces and transitioned to a composition with high mechanical strength in the bulk for load support. The gradient design enabled the multilayer structural supercapacitors to reach state-of-the-art performance matching the level of monofunctional supercapacitors. In situ electrochemical-mechanical measurements established the device durability under mechanical loads. The structural supercapacitor was made into the hull of a model boat to demonstrate its multifunctionality.
