Hierarchical N-Doped Porous Carbons for Zn-Air Batteries and Supercapacitors
文献类型：期刊论文
| 作者 | Guo, BB; Ma, RG; Li, ZC; Guo, SK; Luo, J; Yang, MH; Liu, Q; Thomas, T; Wang, JC |
| 刊名 | NANO-MICRO LETTERS
 |
| 出版日期 | 2020 |
| 期号 | 1 |
| ISSN号 | 2311-6706 |
| DOI | 10.1007/s40820-019-0364-z |
| 文献子类 | Article |
| 英文摘要 | Nitrogen-doped carbon materials with a large specific surface area, high conductivity, and adjustable microstructures have many prospects for energy-related applications. This is especially true for N-doped nanocarbons used in the electrocatalytic oxygen reduction reaction (ORR) and supercapacitors. Here, we report a low-cost, environmentally friendly, large-scale mechanochemical method of preparing N-doped porous carbons (NPCs) with hierarchical micro-mesopores and a large surface area via ball-milling polymerization followed by pyrolysis. The optimized NPC prepared at 1000 degrees C (NPC-1000) offers excellent ORR activity with an onset potential (E-onset) and half-wave potential (E-1/2) of 0.9 and 0.82 V, respectively (vs. a reversible hydrogen electrode), which are only approximately 30 mV lower than that of Pt/C. The rechargeable Zn-air battery assembled using NPC-1000 and the NiFe-layered double hydroxide as bifunctional ORR and oxygen evolution reaction electrodes offered superior cycling stability and comparable discharge performance to RuO2 and Pt/C. Moreover, the supercapacitor electrode equipped with NPC prepared at 800 degrees C exhibited a high specific capacity (431 F g(-1) at 10 mV s(-1)), outstanding rate, performance, and excellent cycling stability in an aqueous 6-M KOH solution. This work demonstrates the potential of the mechanochemical preparation method of porous carbons, which are important for energy conversion and storage. |
| WOS关键词 | OXYGEN-REDUCTION ; CATHODE CATALYST ; NITROGEN ; EFFICIENT ; GRAPHENE ; NANOTUBES ; SPHERES ; NANOPARTICLES ; ENERGY ; ELECTROCATALYST |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | SHANGHAI JIAO TONG UNIV PRESS |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28393]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Guo, BB,Ma, RG,Li, ZC,et al. Hierarchical N-Doped Porous Carbons for Zn-Air Batteries and Supercapacitors[J]. NANO-MICRO LETTERS,2020(1). |
| APA | Guo, BB.,Ma, RG.,Li, ZC.,Guo, SK.,Luo, J.,...&Wang, JC.(2020).Hierarchical N-Doped Porous Carbons for Zn-Air Batteries and Supercapacitors.NANO-MICRO LETTERS(1). |
| MLA | Guo, BB,et al."Hierarchical N-Doped Porous Carbons for Zn-Air Batteries and Supercapacitors".NANO-MICRO LETTERS .1(2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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