Cobalt single atom site isolated Pt nanoparticles for efficient ORR and HER in acid media

Liang, Lvhan; Jin, Huihui; Zhou, Huang; Liu, Bingshuai; Hu, Chenxi; Chen, Ding; Wang, Zhe; Hu, Zhi‐Yi; Zhao, Yufeng; Li, Haiwen; He, Daping; Mu, Shichun

doi:10.1016/j.nanoen.2021.106221

Cited by 242 publications

(134 citation statements)

References 44 publications

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“…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

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145

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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.

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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

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145

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“…[ 73 , 74 , 75 ] However, the complex active components make it difficult to explore the intrinsic properties of single atom Co species. Recently, there were two methods reported to obtain the pure single atom Co catalysts: one is the pyrolysis of Zn/Co‐containing metal‐organic framework compound; [ 76 ] the other is laser irradiation to extract Co species and convert them to single atom Co. [ 77 ] In both approaches, the single atom Co was firmly anchored by N coordination on the C lattice, forming the stable and active Co species. The heteroatom‐doped carbon materials (e.g., B, P, and S to N‐doped carbons) could not only be used as the supports for anchoring single atom metal, but also be served as active species for HER in acidic media, [ 78 ] although their activity is lower than that of metal‐based materials, limiting their practical applications.…”

Section: Design Of Stable Electrocatalystsmentioning

confidence: 99%

Strategies for Electrochemically Sustainable H₂ Production in Acid

Hou

Quan

et al. 2022

Advanced Science

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Acidified water electrolysis with fast kinetics is widely regarded as a promising option for producing H 2 . The main challenge of this technique is the difficulty in realizing sustainable H 2 production (SHP) because of the poor stability of most electrode catalysts, especially on the anode side, under strongly acidic and highly polarized electrochemical environments, which leads to surface corrosion and performance degradation. Research efforts focused on tuning the atomic/nano structures of catalysts have been made to address this stability issue, with only limited effectiveness because of inevitable catalyst degradation. A systems approach considering reaction types and system configurations/operations may provide innovative viewpoints and strategies for SHP, although these aspects have been overlooked thus far. This review provides an overview of acidified water electrolysis for systematic investigations of these aspects to achieve SHP. First, the fundamental principles of SHP are discussed. Then, recent advances on design of stable electrode materials are examined, and several new strategies for SHP are proposed, including fabrication of symmetrical heterogeneous electrolysis system and fluid homogeneous electrolysis system, as well as decoupling/hybrid-governed sustainability. Finally, remaining challenges and corresponding opportunities are outlined to stimulate endeavors toward the development of advanced acidified water electrolysis techniques for SHP.

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“…[2] In order to satisfy growing energy demand reaction, etc. [30][31][32][33] Similarly, SACs were found to serve as the LiPSs anchoring centers and electrocatalytic active sites boosting satisfactory Li-S battery performance. [34][35][36] Herein, combining the conductive abundant surface area of the carbonaceous matrix and the SAC with the character of effective conversion of LiPSs, we prepared an alfalfa-derived N-doped porous carbon-supported atomically dispersed Ni catalyst (named Ni-BPC) using in the Li-S battery.…”

Section: Introductionmentioning

confidence: 99%

“…On account of excellent catalytic activity and atom economy, atomically distributed metal catalysts such as single‐atom catalysts (SACs) have been widely studied in hydrogen evolution reaction, oxygen reduction reaction, oxygen evolution reaction, carbon dioxide reduction reaction, etc. [ 30–33 ] Similarly, SACs were found to serve as the LiPSs anchoring centers and electrocatalytic active sites boosting satisfactory Li–S battery performance. [ 34–36 ]…”

Section: Introductionmentioning

confidence: 99%

Dual‐Atom Nickel Moieties of Ni(II)₂N₄(µ₂‐N)₂ Anchored on Alfalfa‐Derived Developed Porous N‐Doped Carbon for High‐Performance Li–S Battery

Zhang

Xiao

Liang

et al. 2022

Small

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A universal strategy is established for preparing the carbonaceous matrix‐based atomically distributed metal catalysts M‐BPC (M=Ni, Co, Fe, Cu, and Mn, and biomass‐derived porous carbon (BPC)) by one‐step pyrolysis of mixed metal salts and biomass alfalfa. The optimized Ni‐BPC has dual‐atom Ni(II)2N4(µ2‐N)2 moieties, which are chemically anchored on the alfalfa‐derived developed porous N‐doped carbon BPC matrix. An ultrahigh specific surface area of 3133 m2 g−1 with huge total pore volume of 3.02 cm3 g−1 is obtained for Ni‐BPC. The Ni‐BPC could greatly promote the redox kinetics and effectively prevent the shuttle effect of lithium polysulfides in a Li–S battery. The Li–S battery assembled with the Ni‐BPC modified separator exhibits prominent rate performance with the reversible specific capacities of 1279, 1119, 1037, 948 and 787 mAh g−1 at the current densities of 0.1, 0.2, 0.5, 1 and 2 C, respectively. The battery presents an ultra‐long life with low capacity decay of 0.028% per cycle up to 2100 cycles at 1 C. Even under high areal S loadings of 3.9 mg cm−2, the high discharge capacity of 976.6 mAh g−1 is obtained at 0.2 C and excellent cycling stability with 61.1% capacity retention is achieved after 490 cycles.

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Cobalt single atom site isolated Pt nanoparticles for efficient ORR and HER in acid media

Cited by 242 publications

References 44 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

Strategies for Electrochemically Sustainable H₂ Production in Acid

Dual‐Atom Nickel Moieties of Ni(II)₂N₄(µ₂‐N)₂ Anchored on Alfalfa‐Derived Developed Porous N‐Doped Carbon for High‐Performance Li–S Battery

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Cobalt single atom site isolated Pt nanoparticles for efficient ORR and HER in acid media

Cited by 242 publications

References 44 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

Strategies for Electrochemically Sustainable H2 Production in Acid

Dual‐Atom Nickel Moieties of Ni(II)2N4(µ2‐N)2 Anchored on Alfalfa‐Derived Developed Porous N‐Doped Carbon for High‐Performance Li–S Battery

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Product

Resources

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Strategies for Electrochemically Sustainable H₂ Production in Acid

Dual‐Atom Nickel Moieties of Ni(II)₂N₄(µ₂‐N)₂ Anchored on Alfalfa‐Derived Developed Porous N‐Doped Carbon for High‐Performance Li–S Battery