Lanzhou University of Technology Institutional Repository (LUT_IR)
A hybrid transition metal nanocrystal-embedded graphitic carbon nitride nanosheet system as a superior oxygen electrocatalyst for rechargeable Zn-air batteries | |
Niu, Wen-Jun1,2![]() ![]() ![]() ![]() | |
2020-10-14 | |
发表期刊 | Nanoscale
![]() |
ISSN | 20403364 |
卷号 | 12期号:38页码:19644-19654 |
摘要 | In this study, we, for the first time, demonstrate a general solid-phase pyrolysis method to synthesize hybrid transition metal nanocrystal-embedded graphitic carbon nitride nanosheets, namely M-CNNs, as a highly efficient oxygen electrocatalyst for rechargeable Zn-air batteries (ZABs). The ratios between metallic acetylacetonates and the g-C3N4 precursor can be controlled where Fe-CNNs-0.7, Ni-CNNs-0.7 and Co-NNs-0.7 composites have been optimized to exhibit superior ORR/OER bifunctional electrocatalytic activities. Specifically, Co-CNNs-0.7 exhibited not only a comparable half-wave potential (0.803 V vs. RHE) to that of the commercial Pt/C catalyst (0.832 V) with a larger current density for the ORR but also a lower overpotential (440 mV) toward the OER compared with the commercial IrO2 catalyst (460 mV), revealing impressive application in rechargeable ZABs. As a result, ZABs using Co-CNNs-0.7 as the cathode exhibited an excellent peak power density of 85.3 mW cm-2 with a specific capacity of 675.7 mA h g-1 and remarkable cycling stability of 1000 cycles, outperforming the commercially available Pt/C + IrO2 catalysts. This study highlights the synergy from heterointerfaces in oxygen electrocatalysis, thus providing a promising approach for advanced metal-air cathode materials. © 2020 The Royal Society of Chemistry. |
关键词 | Cathodes Electrocatalysis Electrocatalysts Graphitic Carbon Nitride Iridium compounds Nanocrystals Nanosheets Oxygen Oxygen reduction reaction Platinum compounds Synthesis (chemical) Transition metals Cycling stability Electrocatalytic activity Half-wave potential Metal nanocrystals Metallic acetylacetonates Oxygen electrocatalysis Peak power densities Specific capacities |
DOI | 10.1039/d0nr03987j |
收录类别 | SCI ; SCIE ; EI |
语种 | 英语 |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
WOS类目 | Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
WOS记录号 | WOS:000578100000009 |
出版者 | Royal Society of Chemistry |
EI入藏号 | 20204309375760 |
EI主题词 | Zinc air batteries |
EI分类号 | 531 Metallurgy and Metallography - 761 Nanotechnology - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 933 Solid State Physics |
来源库 | Compendex |
分类代码 | 531 Metallurgy and Metallography - 761 Nanotechnology - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 933 Solid State Physics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/115725 |
专题 | 省部共建有色金属先进加工与再利用国家重点实验室 材料科学与工程学院 |
通讯作者 | Niu, Wen-Jun; Chueh, Yu-Lun |
作者单位 | 1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China; 3.Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan; 4.Natl Sun Yat Sen Univ, Dept Phys, Kaohsiung 8042, Taiwan; 5.Natl Tsing Hua Univ, Frontier Res Ctr Fundamental & Appl Sci Matters, Hsinchu 30013, Taiwan |
第一作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室; 材料科学与工程学院 |
通讯作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室; 材料科学与工程学院; 理学院 |
第一作者的第一单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
推荐引用方式 GB/T 7714 | Niu, Wen-Jun,He, Jin-Zhong,Wang, Ya-Ping,et al. A hybrid transition metal nanocrystal-embedded graphitic carbon nitride nanosheet system as a superior oxygen electrocatalyst for rechargeable Zn-air batteries[J]. Nanoscale,2020,12(38):19644-19654. |
APA | Niu, Wen-Jun.,He, Jin-Zhong.,Wang, Ya-Ping.,Sun, Qiao-Qiao.,Liu, Wen-Wu.,...&Chueh, Yu-Lun.(2020).A hybrid transition metal nanocrystal-embedded graphitic carbon nitride nanosheet system as a superior oxygen electrocatalyst for rechargeable Zn-air batteries.Nanoscale,12(38),19644-19654. |
MLA | Niu, Wen-Jun,et al."A hybrid transition metal nanocrystal-embedded graphitic carbon nitride nanosheet system as a superior oxygen electrocatalyst for rechargeable Zn-air batteries".Nanoscale 12.38(2020):19644-19654. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论