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Controlled Synthesis of Carbon-Supported Pt-Based Electrocatalysts for Proton Exchange Membrane Fuel Cells. ELECTROCHEM ENERGY R 2022; 5:13. [PMID: 36212026 PMCID: PMC9536324 DOI: 10.1007/s41918-022-00173-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/18/2021] [Accepted: 10/15/2021] [Indexed: 10/26/2022]
Abstract
AbstractProton exchange membrane fuel cells are playing an increasing role in postpandemic economic recovery and climate action plans. However, their performance, cost, and durability are significantly related to Pt-based electrocatalysts, hampering their large-scale commercial application. Hence, considerable efforts have been devoted to improving the activity and durability of Pt-based electrocatalysts by controlled synthesis in recent years as an effective method for decreasing Pt use, and consequently, the cost. Therefore, this review article focuses on the synthesis processes of carbon-supported Pt-based electrocatalysts, which significantly affect the nanoparticle size, shape, and dispersion on supports and thus the activity and durability of the prepared electrocatalysts. The reviewed processes include (i) the functionalization of a commercial carbon support for enhanced catalyst–support interaction and additional catalytic effects, (ii) the methods for loading Pt-based electrocatalysts onto a carbon support that impact the manufacturing costs of electrocatalysts, (iii) the preparation of spherical and nonspherical Pt-based electrocatalysts (polyhedrons, nanocages, nanoframes, one- and two-dimensional nanostructures), and (iv) the postsynthesis treatments of supported electrocatalysts. The influences of the supports, key experimental parameters, and postsynthesis treatments on Pt-based electrocatalysts are scrutinized in detail. Future research directions are outlined, including (i) the full exploitation of the potential functionalization of commercial carbon supports, (ii) scaled-up one-pot synthesis of carbon-supported Pt-based electrocatalysts, and (iii) simplification of postsynthesis treatments. One-pot synthesis in aqueous instead of organic reaction systems and the minimal use of organic ligands are preferred to simplify the synthesis and postsynthesis treatment processes and to promote the mass production of commercial carbon-supported Pt-based electrocatalysts.
Graphical Abstract
This review focuses on the synthesis process of Pt-based electrocatalysts/C to develop aqueous one-pot synthesis at large-scale production for PEMFC stack application.
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Moreira TFM, Kokoh KB, Napporn TW, Olivi P, Morais C. Insights on the C2 and C3 electroconversion in alkaline medium on Rh/C catalyst: in situ FTIR spectroscopic and chromatographic studies. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140507] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Filippov SP, Yaroslavtsev AB. Hydrogen energy: development prospects and materials. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr5014] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sahoo L, Mondal S, Nayana CB, Gautam UK. Facile d-band tailoring in Sub-10 nm Pd cubes by in-situ grafting on nitrogen-doped graphene for highly efficient organic transformations. J Colloid Interface Sci 2021; 590:175-185. [PMID: 33548601 DOI: 10.1016/j.jcis.2020.12.118] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 02/07/2023]
Abstract
We demonstrate for the first time the in-situ synthesis of Pd nanocubes (PdNC) on nitrogen-doped reduced graphene oxide (NRGO) for facile organic transformations wherein the cubic morphology of Pd can only be realized by precision-controlled acid additions in the tune of 0.02 pH variations in the reaction medium. Due to the intimate contact arising from atom-by-atom addition of Pd on NRGO, the composite has exhibited a pronounced catalyst to support charge transfer effect, shift in the d-band center, and lowering of charge-transfer resistance when compared with PdNC-NRGO ex-situ composites prepared by mixing of the preformed components of PdNC and NRGO or PdNCs alone. The activities of these catalysts were tested for the Suzuki coupling and nitroarene reduction reactions using water as an industry-friendly solvent. In both, the in-situ deposited sample exhibited substantially higher catalytic activity as well as stability when compared with an ex-situ sample or pure PdNCs. We show that a very high turnover frequency of ~31300 h-1 and ~900 h-1 are achievable by using the in-situ deposited PdNC-NRGO composite for Suzuki coupling reactions and nitroarene reduction respectively, better than the state-of-the-art catalysts developed recently, in addition to high recyclability.
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Affiliation(s)
- Lipipuspa Sahoo
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, Mohali, SAS Nagar, Punjab 140306, India
| | - Sanjit Mondal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, Mohali, SAS Nagar, Punjab 140306, India
| | - C B Nayana
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, Mohali, SAS Nagar, Punjab 140306, India
| | - Ujjal K Gautam
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, Mohali, SAS Nagar, Punjab 140306, India.
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Aramesh N, Hoseini SJ, Shahsavari HR, Nabavizadeh SM, Bahrami M, Halvagar MR, Giglio ED, Latronico M, Mastrorilli P. PtSn Nanoalloy Thin Films as Anode Catalysts in Methanol Fuel Cells. Inorg Chem 2020; 59:10688-10698. [PMID: 32701304 DOI: 10.1021/acs.inorgchem.0c01147] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reactions of SnX2 (X = Cl, Br) with [PtMe2(bipy)], 1, (bipy = 2,2'-bipyridine), followed by NaBH4 reduction at the toluene/water interface in the presence or absence of graphene oxide support rendered PtSn nanoalloy thin films. They were characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. The electrocatalytical activity of the PtSn thin films was investigated in the methanol oxidation reaction. Our studies showed that the PtSn/reduced-graphene oxide (RGO) thin film gave better catalytic results for MOR in comparison to bare PtSn or Pt thin films. A maximum jf/jb ratio (jf and jb are the maximum current densities in the forward and backward scans, respectively) of 6.77 was obtained for the PtSn/RGO thin film deriving from the 1 + SnBr2 + NaBH4 sequence.
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Affiliation(s)
- Nahal Aramesh
- Department of Chemistry, Faculty of Sciences, Yasouj University, Yasouj 75918-74831, Iran
| | - S Jafar Hoseini
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71946-84795, Iran.,Department of Chemistry, Faculty of Sciences, Yasouj University, Yasouj 75918-74831, Iran
| | - Hamid R Shahsavari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - S Masoud Nabavizadeh
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71946-84795, Iran
| | - Mehrangiz Bahrami
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71946-84795, Iran
| | - Mohammad Reza Halvagar
- Department of Inorganic Chemistry, Chemistry and Chemical Engineering Research Center of Iran, Tehran 14968-13151, Iran
| | - Elvira De Giglio
- Dipartimento di Chimica, Università degli studi di Bari "Aldo Moro", I-70125 Bari, Italy
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Santos JRN, Viégas DSS, Alves ICB, Rabelo AD, Costa WM, Marques EP, Zhang L, Zhang J, Marques ALB. Reduced Graphene Oxide-Supported Nickel(II)-Bis(1,10-Phenanthroline) Complex as a Highly Active Electrocatalyst for Ethanol Oxidation Reaction. Electrocatalysis (N Y) 2019. [DOI: 10.1007/s12678-019-00539-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nanoporous platinum electrode grown on anodic aluminum oxide membrane: Fabrication, characterization, electrocatalytic activity toward reactive oxygen and nitrogen species. Anal Chim Acta 2018; 1035:44-50. [PMID: 30224143 DOI: 10.1016/j.aca.2018.06.076] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/14/2018] [Accepted: 06/29/2018] [Indexed: 11/20/2022]
Abstract
A new type of nanoelectrode, nanoporous platinum (NPt) electrode was prepared on aluminum oxide membrane by thermal evaporation deposition. The morphology, conductivity and electrocatalytic activity of NPt electrode were characterized and compared with those of nanofilm-Pt electrode through scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) techniques, respectively. SEM images showed that "nanocavities" observed in NPt electrode were actually 2-dimensional enclosures by linked nanoparticles. It was different from the conventional arrays of "nanocavities" formed on homogeneous metal films. EIS data indicated that NPt electrode possesses higher conductivity. Compared with that on nanofilm-Pt electrode (14.05 Ω·cm2), the impedance spectrum on NPt electrode exhibits a semicircle portion with much smaller diameters (1.24 Ω·cm2 for NPt-100, 1.48 Ω·cm2 for NPt-200). Meanwhile, the response sensitivity of NPt electrode to O2 is 0.85 mA cm-2, which is larger than that of nanofilm-Pt electrode (0.54 mA cm-2). The largest catalytic current for nitric oxide (NO) was obtained in buffer with pH value of 9.4 while for Angeli's salt (AS) was obtained in buffer with pH value of 5.4. Additionally, electrocatalytic mechanisms of NPt electrode toward NO and AS were proposed, which indicating it depended on pH value of buffer solution.
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Zhou J, Ge T, Cui X, Lv J, Guo H, Hua Z, Shi J. A Highly Efficient Co3
O4
Nanoparticle-Incorporated Mesoporous Beta Composite as a Synergistic Catalyst for Oxygen Reduction. ChemElectroChem 2017. [DOI: 10.1002/celc.201600858] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jinling Zhou
- State Key lab of High Performance Ceramics and Super Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; 1295 Ding-xi Road Shanghai 200050 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Tongguang Ge
- State Key lab of High Performance Ceramics and Super Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; 1295 Ding-xi Road Shanghai 200050 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Xiangzhi Cui
- State Key lab of High Performance Ceramics and Super Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; 1295 Ding-xi Road Shanghai 200050 P.R. China
| | - Jian Lv
- State Key lab of High Performance Ceramics and Super Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; 1295 Ding-xi Road Shanghai 200050 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Hangle Guo
- State Key lab of High Performance Ceramics and Super Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; 1295 Ding-xi Road Shanghai 200050 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Zile Hua
- State Key lab of High Performance Ceramics and Super Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; 1295 Ding-xi Road Shanghai 200050 P.R. China
| | - Jianlin Shi
- State Key lab of High Performance Ceramics and Super Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; 1295 Ding-xi Road Shanghai 200050 P.R. China
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