1
|
The Oxygen Reduction Performance of Pt Supported on the Hybrid of Porous Carbon Nanofibers and Carbon Black. MATERIALS 2022; 15:ma15134560. [PMID: 35806685 PMCID: PMC9267471 DOI: 10.3390/ma15134560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/18/2022] [Accepted: 06/24/2022] [Indexed: 02/01/2023]
Abstract
Proton exchange membrane fuel cells (PEMFCs) represent an outstanding clean energy alternative for next-generation power sources. The PEMFC’s performance is mainly determined by the sluggish oxygen reduction reaction (ORR) that occurs in its cathode Therefore, the use of electrocatalysts with high electrocatalytic activity and stability for improving the ORR has been a vital direction for the commercialization of PEMFCs. In this article, porous carbon nanofibers (PCNFs) based on a polyacrylonitrile/polymethyl methacrylate (PAN/PMMA) precursor were fabricated by electrospinning followed by carbonization; then, the PCNFs were mixed together with carbon black (CB) in different mass ratios as a hybrid support for Pt nanoparticles. Pt nanoparticles were deposited on the hybrid support by the ethylene glycol reduction method, and the obtained series of Pt/(PCNF + CB) were used as the oxygen reduction electrocatalyst in the cathode. Their electrocatalytic properties, as well as those of Pt/C as a reference, were investigated by cyclic voltammetry scanning (CV) and linear sweep voltammetry (LSV). The results explained that Pt/(PCNF + CB) showed a higher electrochemical activity area and half-wave potential when the PCNF/CB mass ratio was 3/2 than that of commercial Pt/C. Furthermore, the half-wave potential of Pt/(PCNF + CB) only decreased by 4 mV, which was 86 mV lower than that of commercial Pt/C (90 mV) after 2000 ADT cycles, indicating that the incorporation of PCNFs to form a hybrid support could result in corrosion resistance.
Collapse
|
2
|
Zhao L, Guo Y, Fu C, Luo L, Wei G, Shen S, Zhang J. Electrodeposited PtNi nanoparticles towards oxygen reduction reaction: A study on nucleation and growth mechanism. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(21)63860-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
3
|
Li X, Liu Y, Zhu J, Tsiakaras P, Shen PK. Enhanced oxygen reduction and methanol oxidation reaction over self-assembled Pt-M (M = Co, Ni) nanoflowers. J Colloid Interface Sci 2021; 607:1411-1423. [PMID: 34587528 DOI: 10.1016/j.jcis.2021.09.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 09/09/2021] [Accepted: 09/11/2021] [Indexed: 01/04/2023]
Abstract
Herein, we introduce a facile approach to synthesize a unique class of Pt-M (M = Ni, Co) catalysts with a nanoflower structure for boosting both oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR). By controlling the surface-active agents, we modified the functional groups surrounding the Pt atoms, tuned the alloying of Pt and the transition metals Ni and Co, and prepared two different kinds of nanodendrites. Their successful synthesis depends on the selection and amount of surfactants (hexadecyltrimethylammonium bromide (CTAB), Polyvinylpyrrolidone (PVP)). Besides, by controlling reaction time, we also explored the forming procedures for Pt-Co globularia nanodendrite (Pt-Co GND) and Pt-Ni petalody nanodendrite (Pt-Ni PND). Our investigation highlights the importance of complex nanoarchitecture, which enables surface and interface modification to achieve excellent catalytic performance in fuel cell electrocatalysis. The characterization of the as-prepared catalysts reveals a high electrochemical surface area and mass activity (2041 mAmgPt-1and 950 mAmgPt-1 for Pt-Co GND and Pt-Ni PND, respectively, for ORR). Furthermore, Pt-Co GND showed a high MOR activity, with a mass activity value recorded at 1615 mAmgPt-1 which is far superior to that for Pt/C. Moreover, both catalysts retain high activity after accelerated durability tests (ADTs). The electron transfer number was calculated by performing the rotating ring-disk electrode (RRDE) measurements. Due to abundant active sites of Pt, both Pt-Co GND and Pt-Ni PND exhibit a 4e- pathway for ORR with electron transfer number of >3.95.
Collapse
Affiliation(s)
- Xiaolan Li
- School of Physical Science and Technology, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Collaborative Innovation Centre for Sustainable Energy Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530000, Guangxi Province, China
| | - Yang Liu
- School of Physical Science and Technology, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Collaborative Innovation Centre for Sustainable Energy Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530000, Guangxi Province, China
| | - Jinliang Zhu
- School of Physical Science and Technology, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Collaborative Innovation Centre for Sustainable Energy Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530000, Guangxi Province, China.
| | - Panagiotis Tsiakaras
- Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, 1 Sekeri Str., Pedion Areos, Volos 38334, Greece.
| | - Pei Kang Shen
- School of Physical Science and Technology, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Collaborative Innovation Centre for Sustainable Energy Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530000, Guangxi Province, China.
| |
Collapse
|
4
|
Characteristics of Electrode Materials for Supercapacitors. HANDBOOK OF NANOCOMPOSITE SUPERCAPACITOR MATERIALS I 2020. [DOI: 10.1007/978-3-030-43009-2_9] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
5
|
Wang C, Li J, Sun S, Li X, Wu G, Wang Y, Xie F, Huang Y. Controlled growth of silver nanoparticles on carbon fibers for reinforcement of both tensile and interfacial strength. RSC Adv 2016. [DOI: 10.1039/c5ra22032g] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We have developed an electro-chemical deposition approach to synthesize various structures of Ag NPs on carbon fibers. This improved both the tensile strength and the interfacial property as much as 57.2% and 27.2%, respectively.
Collapse
Affiliation(s)
- Caifeng Wang
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Jun Li
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Shaofan Sun
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Xiaoyu Li
- College of Life Sciences
- Northeast Forestry University
- Harbin 150040
- China
| | - Guangshun Wu
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Yuwei Wang
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
- College of Materials Science and Engineering
| | - Fei Xie
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Yudong Huang
- School of Chemical Engineering and Technology
- Harbin Institute of Technology
- Harbin 150001
- China
| |
Collapse
|