Ultra-small platinum nanoparticles segregated by nickle sites for efficient ORR and HER processes

Liang, Lvhan; Jin, Huihui; Zhou, Huang; Liu, Bingshuai; Hu, Chenxi; Chen, Ding; Zhu, Jiawei; Wang, Zhe; Li, Haiwen; Liu, Suli; He, Daping; Mu, Shichun

doi:10.1016/j.jechem.2021.05.033

Cited by 88 publications

(37 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The strong anchoring effect can make the particle size significantly reduced, and inhibit the metal leaching during the electrocatalytic reactions. [98,99] The single-atom sites would reinforce the interaction with the above metal nanoparticles, and consequently affect the surface adsorption over the active metal atoms of NPs. Taking the Ru nanoparticles coated on the M-H x (M = Fe, Co, Ni) sites as an example, the strong interaction between Ru 55 and M 1 @OG (O-doped graphene) would result in the regulated charge states (Figure 10D,E).…”

Section: (Ii) Anchoring Typementioning

confidence: 99%

Nurturing the marriages of single atoms with atomic clusters and nanoparticles for better heterogeneous electrocatalysis

Zhang

Zhu

et al. 2022

Interdisciplinary Materials

Self Cite

146

View full text Add to dashboard Cite

Single‐atom catalysts, featuring some of the most unique activities, selectivity, and high metal utilization, have been extensively studied over the past decade. Given their high activity, selectivity, especially towards small molecules or key intermediate conversions, they can be synergized together with other active species (typically other single atoms, atomic clusters, or nanoparticles) in either tandem or parallel or both, leading to much better performance in complex catalytic processes. Although there have been reports on effectively combining the multiple components into one single catalytic entity, the combination and synergy between single atoms and other active species have not been reviewed and examined in a systematic manner. Herein, in this overview, the key synergistic interactions, binary complementary effects, and the bifunctional functions of single atoms with other active species are defined and discussed in detail. The integration functions of their marriages are investigated with particular emphasis on the homogeneous and heterogeneous combinations, spatial distribution, synthetic strategies, and the thus‐derived outstanding catalytic performance, together with new light shined on the catalytic mechanisms by zooming in several case studies. The dynamic nature of each of the active species and in particular their interactions in such new catalytic entities in the heterogeneous electrocatalytic processes are visited, on the basis of the in situ/operando evidence. Last, we feature the current challenges and future perspectives of these integrated catalytic entities that can offer guidance for advanced catalyst design by the rational combination and synergy of binary or multiple active species.

show abstract

Section: (Ii) Anchoring Typementioning

confidence: 99%

Nurturing the marriages of single atoms with atomic clusters and nanoparticles for better heterogeneous electrocatalysis

Zhang

Zhu

et al. 2022

Interdisciplinary Materials

Self Cite

146

View full text Add to dashboard Cite

show abstract

“…Unfortunately, the exorbitant price and unsatisfactory durability of the existing commercialized Pt/C have hindered the wide-scale application of PEMFCs. For instance, the Pt loading on the cathodes of membrane electrode assemblies (MEAs) needs to reach 0.3–0.4 mg cm –2 to satisfy the power density required for fuel cell vehicles. , However, catalysts with high Pt loading are prone to agglomeration during the actual operation of PEMFCs, resulting in a reduction of electrochemical active surface area (ECSA), which has an adverse effect on the stability and catalytic activity. , Encouraging progress has been obtained in the past several decades in exploiting various advanced platinum group metal (PGM)-free materials. − However, PGM-free materials are still far from reaching the purpose of commercial application due to their insufficient long-term durability during practical fuel cell conditions, especially in acidic electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Rational Design of a High-Durability Pt-Based ORR Catalyst Supported on Mn/N Codoped Carbon Sheets for PEMFCs

Shu

Zhang

et al. 2022

Energy Fuels

View full text Add to dashboard Cite

The high cost and poor durability of the catalysts for oxygen reduction reaction (ORR) remain two stumbling blocks to the broad commercialization of proton exchange membrane fuel cells (PEMFCs). Herein, novel two-dimensional (2D)-structured carbon sheets with high specific surface areas and Mn–N x sites are rationally designed and synthesized with a facile method. Also, after being coupled with the highly dispersed Pt nanoparticles, the carbon composite with dual ORR active sites [Pt/(Mn–N)@C] successfully outperforms the commercialized Pt/C in both mass activity (0.50 A mgPt –1) and specific activity (0.54 mA cmPt –1). Meanwhile, it maintains outstanding durability after 30,000 cycles of an accelerated durability test with a performance loss of only 14.1 %. Furthermore, the excellent performance (1.18 W cm–2) revealed in the single-cell configuration demonstrates the promising application of Pt/(Mn–N)@C in PEMFCs.

show abstract

“…To date, noble metals such as Pt, Ir, and Ru have been considered as the most effective electrocatalysts for ORR. 35 These PGMs have significantly high ORR activity. For example, platinum-supported carbon (Pt/C) has been regarded as the most powerful electrocatalyst for ORR, while RuO 2 has been investigated as the electrocatalyst with the highest activity for OER.…”

Section: Design Of Electrocatalysts For Zabsmentioning

confidence: 99%

“…Thus, the practical applications of ZABs have been greatly hindered, and the utilization for a large-scale energy storage system is also limited. 33–36 To overcome these drawbacks, intensive efforts have been devoted to improving the catalytic activity using PGMs as the alloy or bimetallic nanoparticles with transition metals. 33,34 The alloys and bimetallic nanostructures of transition metals and PGMs are good strategies to reduce the amount of precious metals, which can also improve the catalytic efficiency of the electrocatalysts.…”

Section: Design Of Electrocatalysts For Zabsmentioning

confidence: 99%

Material design and surface chemistry for advanced rechargeable zinc–air batteries

et al. 2022

View full text Add to dashboard Cite

show abstract

Ultra-small platinum nanoparticles segregated by nickle sites for efficient ORR and HER processes

Cited by 88 publications

References 31 publications

Nurturing the marriages of single atoms with atomic clusters and nanoparticles for better heterogeneous electrocatalysis

Nurturing the marriages of single atoms with atomic clusters and nanoparticles for better heterogeneous electrocatalysis

Rational Design of a High-Durability Pt-Based ORR Catalyst Supported on Mn/N Codoped Carbon Sheets for PEMFCs

Material design and surface chemistry for advanced rechargeable zinc–air batteries

Contact Info

Product

Resources

About