Deep eutectic solvent-assisted synthesis of highly efficient PtCu alloy nanoclusters on carbon nanotubes for methanol oxidation reaction

Zhong, Jingping; Li, Lili; Waqas, Muhammad; Wang, Xiaoqu; Fan, Youjun; Qi, Jiuhui; Yang, Bo; Rong, Chuyan; Chen, Wei; Sun, Shi‐Gang

doi:10.1016/j.electacta.2019.134677

Cited by 82 publications

(40 citation statements)

References 55 publications

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“…ORR is a crucial process for fuel cells, Pt-based electrocatalysts are commonly used for ORR. [165] So far, tremendous efforts have been paid to develop cost-efficient and outstanding [156] Copyright 2019, Elsevier. d) STEM and EDX elemental maps of PtLa alloy NC particle.…”

Section: Orrmentioning

confidence: 99%

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Deep Eutectic Solvents for Boosting Electrochemical Energy Storage and Conversion: A Review and Perspective

Liang

et al. 2021

Adv Funct Materials

211

163

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The pursuit of sustainable energy utilization arouses increasing interest in efficiently producing durable battery materials and catalysts with minimum environmental impact. As green, safe, and cheap eutectic mixtures, deep eutectic solvents (DESs) provide tremendous opportunities and open up attractive perspectives as charge transfer and reaction media for electrochemical energy storage and conversion (EESC). In this review, the fundamental properties of DESs are first summarized. Then, the important roles that DESs play in various EESC technologies including advanced electrolytes for batteries/supercapacitors, media for the preparation of electrode materials and catalysts, and extracting agents for battery recycling are systematically reviewed. A particular focus is placed on the fundamental understanding of structure-composition-property-performance relationships. Finally, the challenges for the controllable design of DESs for EESC applications and future developments are presented. This review is expected to shed light on developing advanced DESs for next-generation EESC systems.

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Section: Orrmentioning

confidence: 99%

“…c) CV curves (50 mV s −1 ) of PtCu ANCs/MWCNT catalysts prepared with different Pt:Cu mass ratios of a) 1:1, b) 1:0.67, c) 1:0.43, d) 1:0.25 and e) 1:0.11 in a 0.5 m H 2 SO 4 solution containing 0.5 m CH 3 OH. Reproduced with permission [156]. Copyright 2019, Elsevier.…”

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confidence: 99%

Deep Eutectic Solvents for Boosting Electrochemical Energy Storage and Conversion: A Review and Perspective

Liang

et al. 2021

Adv Funct Materials

211

163

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“… 44 The Pt XPS core lines in Pt 1 Ni 1 /PC 950 and Pt 1 Cu 1 /PC 950 were fitted to the pair of triplets corresponding to lower (4 f 7/2 ) and higher (4 f 5/2 ) binding energies, Figure S4c ,d. In each triplet, the lower binding energy peaks in the range of 71.1–71.4 and 74.5–74.7 eV are due to elemental Pt, the middle binding energy peaks in the range of 72.0–72.4 and 75.6–75.8 eV are due to PtO, and the high energy binding peaks at 73.0 and at 77.3 eV are due to PtO 2 . 44 , 45 The observed binding energies of Pt are negative shifted in comparison to the reference Pt binding energy value (71.8 eV) due to electron interaction of Pt with transition metals. 46 The electronegativity of Pt (2.28) is higher than Ni (1.80) and Cu (1.90), and the electron density would be more toward Pt.…”

Section: Resultsmentioning

confidence: 99%

Zinc-Coordination Polymer-Derived Porous Carbon-Supported Stable PtM Electrocatalysts for Methanol Oxidation Reaction

et al. 2021

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Porous carbon (PC) is obtained by carbonizing a zinc-coordination polymer (MOF-5) at 950 °C and PtM (M = Fe, Co, Ni, Cu, Zn) nanoparticles (NPs), which are deposited on PC using the polyol method. Structural and morphological characterizations of the synthesized materials are carried out by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy (HRTEM), and the porosity was determined using a N 2 adsorption/desorption technique. The results revealed that PtM NPs are alloyed in the fcc phase and are well dispersed on the surface of PC. The electrochemical results show that PtM/PC 950 catalysts have higher methanol oxidation reaction (MOR) performances than commercial Pt/C (20%) catalysts. After 3000 s of chronoamperometry (CA) test, the MOR performances decreased in the order of Pt 1 Cu 1 /PC 950 > Pt 1 Ni 1 /PC 950 > Pt 1 Fe 1 /PC 950 > Pt 1 Zn 1 /PC 950 > Pt 1 Co 1 /PC 950. The high MOR activities of the synthesized catalysts are attributed to the effect of M on methanol dissociative chemisorption and improved tolerance of Pt against CO poisoning. The high specific surface area and porosity of the carbon support have an additional effect in boosting the MOR activities. Screening of the first row transition metals ( d 5+ n , n = 1, 2, 3, 4, 5) alloyed with Pt binary catalysts for MOR shows that Pt with d 8 (Ni) and d 9 (Cu) transition metals, in equivalent atomic ratios, are good anode catalysts for alcohol fuel cells.

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“…HRTEM characterization (inset of Fig. 2(a)) shows that the lattice spacing for the PtCu nanoparticles (0.22 nm) is smaller than that for the Pt(111) plane (0.23 nm), further suggesting the formation of a PtCu alloy nanostructure [43,44]. lyst surface.…”

Section: Resultsmentioning

confidence: 99%

New strategy of S,N co-doping of conductive-copolymer-derived carbon nanotubes to effectively improve the dispersion of PtCu nanocrystals for boosting the electrocatalytic oxidation of methanol

Zhong

Huang

et al. 2021

Chinese Journal of Catalysis

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Deep eutectic solvent-assisted synthesis of highly efficient PtCu alloy nanoclusters on carbon nanotubes for methanol oxidation reaction

Cited by 82 publications

References 55 publications

Deep Eutectic Solvents for Boosting Electrochemical Energy Storage and Conversion: A Review and Perspective

Deep Eutectic Solvents for Boosting Electrochemical Energy Storage and Conversion: A Review and Perspective

Zinc-Coordination Polymer-Derived Porous Carbon-Supported Stable PtM Electrocatalysts for Methanol Oxidation Reaction

New strategy of S,N co-doping of conductive-copolymer-derived carbon nanotubes to effectively improve the dispersion of PtCu nanocrystals for boosting the electrocatalytic oxidation of methanol

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