新型炭材料2021，Vol.36Issue(3)：585-593,9.DOI:10.1016/S1872-5805(21)60043-4
硼氮双掺杂提升碳点电催化氧还原活性研究
Boron and nitrogen co-doped carbon dots for boosting electrocatalytic oxygen reduction
摘要
Abstract
Carbon dots (CDs) have become an emerging carbon nanomaterial for use in energy-conversion systems because of their large surface area and rapid electron transfer. Carbon dots (BN-CDs) doped with both boron and nitrogen were synthesized by a simple one-step electrochemical etching approach using low-cost petroleum coke as precursor. Compared with CDs doped with only B or N, BN-CDs showed an excellent four-electron oxygen reduction reaction (ORR) activity with a positive onset potential of 0.958 V and a large diffusion-limited current density of -4.32 mA cm-2. Furthermore, the long-term stability and methanol tolerance of BN-CDs were better than those of a commercial Pt/C catalyst. It was found by density functional theory (DFT) calculation that the co-doping of N and B promoted the adsorption of O2 molecules in the ORR process. This work provides new insight into the rational design of carbon nanomaterials and their use in energy conversion.关键词
碳点/硼掺杂/氮掺杂/氧还原Key words
Carbon dots/Boron doping/Nitrogen doping/Oxygen reduction reaction分类
通用工业技术引用本文复制引用
刘卉,刘子慧,张金强,智林杰,吴明铂..硼氮双掺杂提升碳点电催化氧还原活性研究[J].新型炭材料,2021,36(3):585-593,9.基金项目
This work was financially supported by the Na-tional Natural Science Foundation of China(No.52072409,U1662113,U20A20131)and Taishan Scholar Project(No.ts201712020). 国家自然科学基金(52072409,U1662113,U20A20131) （No.52072409,U1662113,U20A20131）
山东省泰山学者人才工程项目(ts201712020). （ts201712020）
