新穎材料農業：農業新穎材料在農產品保鮮開發、應用與機理【土壤環境科學系/林耀東特聘教授】
| 論文篇名 | 英文：Preparation of porous nitrogen-doped activated carbon derived from rice straw for high-performance supercapacitor application 中文：製備高性能超級電容器應用之多孔摻氮稻草活性炭 |
| 期刊名稱 | Journal of the Taiwan Institute of Chemical Engineers |
| 發表年份,卷數,起迄頁數 | 2021, 120, 246-256 |
| 作者 | Charoensook, Kanruethai; Huang, Cheng-Liang; Tai, Hung-Chun; Lanjapalli, V. Venkata Krishna; Chiang, Li-Ming; Hosseini, Soraya; Lin, Yao-Tung(林耀東)*; Li, Yuan-Yao(李元堯)* |
| DOI | 10.1016/j.jtice.2021.02.021 |
| 中文摘要 | 環保和低成本的生物質衍生材料在生產用於超級電容器 (SC) 應用的高表面積多孔活性炭 (AC) 方面受到了很多關注。在這項研究中，稻草 (RS) 是一種農業廢物，用於通過碳化和 KOH 活化兩步過程製備活性炭。所生產的 AC 具有 2651 m2g-1 的高比表面積 (SSA)，具有分級孔結構。為了提高 SC 的性能，使用三聚氰胺作為前驅體，進行了氮摻雜策略以增加 AC 中的氮官能團。摻氮 AC 的 SSA 為 2537 m2g-1，使用摻氮 AC 在 0.5 Ag-1 電流密度下在 6 M KOH 水性電解質中實現了 324 F/g 的電容。在 5.0 Ag-1 的電流密度下進行 10,000 次充放電循環後，電容保持率為 95%。此外，離子液體用作超級電容器的電解質。使用 EMI-TFSI 電解質可以在 750 W/kg 的功率密度下實現 48.9 Wh/kg 的能量密度。我們認為所提出的方法可用於各種生物質，以製備具有高比表面積和氮官能團的活性炭，用於儲能應用。 |
| 英文摘要 | Environmental-friendly and low-cost biomass-derived materials have been attracted many attentions to pro- duce porous activated carbon (AC) with high surface area for supercapacitor (SC) application. In this study, rice straw (RS), an agricultural waste, is used to prepare ACs with a two-step process of carbonization and KOH activation. As-produced AC has a high specific surface area (SSA) of 2651 m2g-1 with hierarchical pore structure. In order to enhance the performance of SC, nitrogen-doping strategy is carried out to increase nitrogen functional groups in the AC using melamine as a precursor. The SSA of the nitrogen-doped AC is 2537 m2g-1 and the capacitance of 324 F/g is achieved using nitrogen-doped AC at a current density of 0.5 Ag-1 in 6 M KOH aqueous electrolyte. The capacitance retention is 95% after 10,000 charge and discharge cycles at a current density of 5.0 Ag-1. In addition, ionic liquid is employed as the electrolyte for the superca- pacitor. The energy density of 48.9 Wh/kg at a power density of 750 W/kg can be achieved using EMI-TFSI electrolyte. We think that the proposed method can be used for a variety of biomass for preparation of ACs with high specific surface area and nitrogen functional groups for the energy storage applications. |
| 發表成果與本中心研究主題相關性 | 農業新穎材料在農產品保鮮開發、應用與機理 |
