Phosphorus-doped onion-like carbon for CO2 electrochemical reduction: the decisive role of the bonding configuration of phosphorus
文献类型：期刊论文
| 作者 | Liu, TF; Ali, S2; Lian, Z1; Si, CW; Su, DS; Li, B |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2018-11-07 |
| 卷号 | 6期号:41页码:- |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta06649c |
| 英文摘要 | Doping with heteroatoms, such as nitrogen and boron, is crucial for the good performance of metal-free carbon cathode catalysts in the CO2 electrochemical reduction reaction (CERR). In this report, for the first time phosphorus is used to fabricate carbon catalysts and it is found that the bonding configuration of phosphorus has a key effect on the performance of the CERR. Two different phosphorus doped onion-like carbon (P-OLC) catalysts are synthesized with P-O bonding or P-C bonding as the major phosphorus bonding configuration, respectively. Compared to P-OLC with P-O bonding, P-OLC with P-C bonding exhibits a much better CERR performance, with a partial current density of 4.9 mA cm(-2), 81% faradaic efficiency, and excellent durability (27 h) at low potential (-0.90 V vs. SHE). Density functional theory calculations show that the binding energy of the key intermediate COOH* in P-C bonding is much higher than that of its counterpart in P-O bonding, which is beneficial for lowering the energy barrier of the rate-limiting step. The better reactivity of the P-C bonding site is also verified by aromaticity analysis. Moreover, ultraviolet photoelectron spectroscopy (UPS) and partial density of state (PDOS) analysis suggest that the electron transfer capability of P-C bonding is stronger than that of P-O bonding. The current study demonstrates that phosphorus doping is an effective strategy for fabricating carbon CERR catalysts and reveals the pivotal role of the phosphorus bonding configuration. |
| 学科主题 | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000448412700012 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79833]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, TF,Ali, S,Lian, Z,et al. Phosphorus-doped onion-like carbon for CO2 electrochemical reduction: the decisive role of the bonding configuration of phosphorus[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(41):-. |
| APA | Liu, TF,Ali, S,Lian, Z,Si, CW,Su, DS,&Li, B.(2018).Phosphorus-doped onion-like carbon for CO2 electrochemical reduction: the decisive role of the bonding configuration of phosphorus.JOURNAL OF MATERIALS CHEMISTRY A,6(41),-. |
| MLA | Liu, TF,et al."Phosphorus-doped onion-like carbon for CO2 electrochemical reduction: the decisive role of the bonding configuration of phosphorus".JOURNAL OF MATERIALS CHEMISTRY A 6.41(2018):-. |
入库方式： OAI收割
来源：金属研究所
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