Supramolecular Modulation of Molecular Conformation of Metal Porphyrins toward Remarkably Enhanced Multipurpose Electrocatalysis and Ultrahigh-Performance Zinc-Air Batteries
文献类型：期刊论文
| ; | |
| 作者 | BSRF用户 |
| 刊名 | ADVANCED ENERGY MATERIALS
 ; ADVANCED ENERGY MATERIALS
|
| 出版日期 | 2021 ; 2021 |
| 卷号 | 11期号:46页码:2102062 |
| ISSN号 | 1614-6832 ; 1614-6832 |
| DOI | 10.1002/aenm.202102062 ; 10.1002/aenm.202102062 |
| 文献子类 | Article ; Article |
| 英文摘要 | Modulating the intrinsic catalytic activity of molecular catalysts to improve electrocatalytic performance is significant but challenging. Herein, a simple yet effective strategy to induce molecular flattening of Co (III) meso-tetra (N-methyl-4-pyridyl) porphyrine (Co-TMPyP) by supramolecular assembly with chemically converted graphene (CCG) via synergistic electrostatic and pi-pi interactions is reported. This unique variation in molecular conformation leads to a shortened Co-N coordination bond and enhanced electron transfer from the porphyrin macrocycle to the metal ion, thereby optimizing the electronic structure of the catalytic active center in Co-TMPyP molecule. Thus, the flattened Co-TMPyP on CCG (Co-TMPyP/CCG) demonstrates remarkable electrocatalytic performance for the oxygen reduction reaction (ORR), hydrogen evolution reaction (HER), and oxygen evolution reaction (OER) simultaneously as a tri-functional molecular catalyst for the first time with a high half-wave potential of 0.824 V for ORR and a low overpotential for HER (320 mV) and OER (379 mV) at 10 mA cm(-2), respectively, not only much better than the pristine Co-TMPyP but also among the best results of molecular catalysts in each aspect of ORR, OER, and HER achieved thus far. As a practical demonstration, the Co-TMPyP/CCG catalyst is used to assemble a rechargeable Zn-air battery, which shows the highest specific capacity (793 mAh g(-1)) and power density (225.4 mW cm(-2)) among all molecular catalyst-based Zn-air batteries ever reported.; Modulating the intrinsic catalytic activity of molecular catalysts to improve electrocatalytic performance is significant but challenging. Herein, a simple yet effective strategy to induce molecular flattening of Co (III) meso-tetra (N-methyl-4-pyridyl) porphyrine (Co-TMPyP) by supramolecular assembly with chemically converted graphene (CCG) via synergistic electrostatic and pi-pi interactions is reported. This unique variation in molecular conformation leads to a shortened Co-N coordination bond and enhanced electron transfer from the porphyrin macrocycle to the metal ion, thereby optimizing the electronic structure of the catalytic active center in Co-TMPyP molecule. Thus, the flattened Co-TMPyP on CCG (Co-TMPyP/CCG) demonstrates remarkable electrocatalytic performance for the oxygen reduction reaction (ORR), hydrogen evolution reaction (HER), and oxygen evolution reaction (OER) simultaneously as a tri-functional molecular catalyst for the first time with a high half-wave potential of 0.824 V for ORR and a low overpotential for HER (320 mV) and OER (379 mV) at 10 mA cm(-2), respectively, not only much better than the pristine Co-TMPyP but also among the best results of molecular catalysts in each aspect of ORR, OER, and HER achieved thus far. As a practical demonstration, the Co-TMPyP/CCG catalyst is used to assemble a rechargeable Zn-air battery, which shows the highest specific capacity (793 mAh g(-1)) and power density (225.4 mW cm(-2)) among all molecular catalyst-based Zn-air batteries ever reported. |
| 电子版国际标准刊号 | 1614-6840 ; 1614-6840 |
| WOS研究方向 | Chemistry ; Chemistry ; Energy & Fuels ; Materials Science ; Physics ; Energy & Fuels ; Materials Science ; Physics |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000706881600001 ; WOS:000706881600001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/293111]  |
| 专题 | 北京同步辐射装置 |
| 推荐引用方式 GB/T 7714 | BSRF用户. Supramolecular Modulation of Molecular Conformation of Metal Porphyrins toward Remarkably Enhanced Multipurpose Electrocatalysis and Ultrahigh-Performance Zinc-Air Batteries, Supramolecular Modulation of Molecular Conformation of Metal Porphyrins toward Remarkably Enhanced Multipurpose Electrocatalysis and Ultrahigh-Performance Zinc-Air Batteries[J]. ADVANCED ENERGY MATERIALS, ADVANCED ENERGY MATERIALS,2021, 2021,11, 11(46):2102062, 2102062. |
| APA | BSRF用户.(2021).Supramolecular Modulation of Molecular Conformation of Metal Porphyrins toward Remarkably Enhanced Multipurpose Electrocatalysis and Ultrahigh-Performance Zinc-Air Batteries.ADVANCED ENERGY MATERIALS,11(46),2102062. |
| MLA | BSRF用户."Supramolecular Modulation of Molecular Conformation of Metal Porphyrins toward Remarkably Enhanced Multipurpose Electrocatalysis and Ultrahigh-Performance Zinc-Air Batteries".ADVANCED ENERGY MATERIALS 11.46(2021):2102062. |
入库方式： OAI收割
来源：高能物理研究所
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