P–Fe bond oxygen reduction catalysts toward high-efficiency metal–air batteries and fuel cells

Jin, Huihui; Kou, Zongkui; Cai, Weiwei; Zhou, Huang; Ji, Pengxia; Liu, Bingshuai; Radwan, Amr; He, Daping; Mu, Shichun

doi:10.1039/d0ta02334e

Cited by 61 publications

(44 citation statements)

References 43 publications

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“…Table 1 shows that Co−P,N−CNT has excellent activity in acidic media ( E onset =0.981 V, j L =5.6 mA cm −2 ). Very recently, TPP was used to bridge iron ions and ZIF‐8 [50] . The resulted catalyst exhibited high half‐wave potentials in both alkaline and acidic electrolytes ( E 1/2 =0.923 V and 0.791 V, respectively), as well as a high power density of 175 mW cm −2 in a Zn‐air battery.…”

Section: Synthetic Methods and Catalytic Activitymentioning

confidence: 99%

Recent Advances in Phosphorus‐Coordinated Transition Metal Single‐Atom Catalysts for Oxygen Reduction Reaction

et al. 2020

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Carbon‐supported heteroatom‐coordinated metal single‐atom catalysts (SACs) are promising electrocatalysts for oxygen reduction reaction (ORR) due to their low cost and tunable catalytic activity. Adjusting the electronic structure of the active center is an effective way to improve the activity of SACs. Compared with the intensively studied nitrogen‐coordinated transition metal atoms (e. g. Fe, Co and Mn), phosphorus‐coordinated and nitrogen‐phosphorus dual‐coordinated ones exhibit different electronic structures, which changes the reaction energy barrier and enhances the catalytic activity. This review summarizes recent advances in phosphorus coordination SACs for ORR in terms of theoretical study, site structure determination, synthesis method and catalytic activity. Further research is called for to explore the precise synthesis of phosphorus coordination SACs in a controllable manner and check the SACs under actual working conditions.

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Section: Synthetic Methods and Catalytic Activitymentioning

confidence: 99%

Recent Advances in Phosphorus‐Coordinated Transition Metal Single‐Atom Catalysts for Oxygen Reduction Reaction

et al. 2020

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“…[ 114 ] What's more, our group demonstrated that P coordinated with the Fe–N x site to forming P–Fe–N x exhibits outstanding ORR activity in both acidic and alkaline solutions, as well as high power densities in Zn–air batteries and proton exchange membrane fuel cells test. [ 115 ] Doan‐Nguyen et al reported a solution colloidal synthesis for cobalt phosphide (Co 2 P) nanorods (NRs) with TOPO as the P source. The carbon‐supported Co 2 P NRs not only had comparable activity, but also were remarkably more stable than conventional Pt catalysts for ORR in alkaline solutions (Figure 4c–f).…”

Section: Applications In Energy‐related Electrocatalysismentioning

confidence: 99%

Transition‐Metal Phosphides: Activity Origin, Energy‐Related Electrocatalysis Applications, and Synthetic Strategies

Liu

Amiinu

et al. 2020

Adv Funct Materials

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409

194

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Developing highly efficient and stable electrocatalysts plays an important role in energy-related electrocatalysis fields. Transition-metal phosphides (TMPs) possess a series of advantages, such as high conductivity, earthabundance reserves, and good physicochemical properties, therefore arousing wide attention. In this review, the electrochemical activity origin of TMPs, allowing the rational design and construction of phosphides toward various energy-relevant reactions is first discussed. Subsequently, their unique energy-related electrocatalysis nature toward hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), hydrogen oxidation reaction (HOR), carbon dioxide reduction reaction (CO 2 RR), nitrogen reduction reaction (NRR), urea oxidation reaction (UOR), methanol oxidation reaction (MOR), and others is highlighted. Then, the TMPs' synthetic strategies are analyzed and summarized systematically. Finally, the existing key issues, countermeasures, and the future challenges of TMPs toward efficient energy-related electrocatalysis are briefly discussed.

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“…DFT calculations revealed that the N and P binary-coordinated iron sites provided suitable energy barrier for oxygen intermediate activation and thus accelerated the reaction kinetics. With triphenylphosphine (PPh 3 ) as the P-containing precursor, Jin and coworkers for the first time reported that P atoms could directly coordinate with the Fe-N x sites and form a C-P-Fe-N x -P-C configuration, which showed an ultrahigh ORR activity with a half-wave potential up to 0.923 V and an ORR Tafel slope of 56 mV dec −1 in alkaline media [ 163 ]. In contrast to directly coordinating with central Fe atoms, the introduction of boron centers in the carbon matrix could also improve the ORR activity of the FeN x sites [ 55 ].…”

Section: Saecs For Oxygen Reduction Reactionsmentioning

confidence: 99%

Recent Advances in Single-Atom Electrocatalysts for Oxygen Reduction Reaction

2020

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Oxygen reduction reaction (ORR) plays significant roles in electrochemical energy storage and conversion systems as well as clean synthesis of fine chemicals. However, the ORR process shows sluggish kinetics and requires platinum-group noble metal catalysts to accelerate the reaction. The high cost, rare reservation, and unsatisfied durability significantly impede large-scale commercialization of platinum-based catalysts. Single-atom electrocatalysts (SAECs) featuring with well-defined structure, high intrinsic activity, and maximum atom efficiency have emerged as a novel field in electrocatalytic science since it is promising to substitute expensive platinum-group noble metal catalysts. However, finely fabricating SAECs with uniform and highly dense active sites, fully maximizing the utilization efficiency of active sites, and maintaining the atomically isolated sites as single-atom centers under harsh electrocatalytic conditions remain urgent challenges. In this review, we summarized recent advances of SAECs in synthesis, characterization, oxygen reduction reaction (ORR) performance, and applications in ORR-related H2O2 production, metal-air batteries, and low-temperature fuel cells. Relevant progress on tailoring the coordination structure of isolated metal centers by doping other metals or ligands, enriching the concentration of single-atom sites by increasing metal loadings, and engineering the porosity and electronic structure of the support by optimizing the mass and electron transport are also reviewed. Moreover, general strategies to synthesize SAECs with high metal loadings on practical scale are highlighted, the deep learning algorithm for rational design of SAECs is introduced, and theoretical understanding of active-site structures of SAECs is discussed as well. Perspectives on future directions and remaining challenges of SAECs are presented.

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P–Fe bond oxygen reduction catalysts toward high-efficiency metal–air batteries and fuel cells

Abstract: An Fe, N, P co-doped carbon framework catalyst (CPFeNPC) with a novel C–P–Fe–Nx–P–C system exhibits superior oxygen reduction reaction (ORR) catalytic performance and shines new light on the real application of metal–N–C catalysts in fuel cells.

Cited by 61 publications

References 43 publications

Recent Advances in Phosphorus‐Coordinated Transition Metal Single‐Atom Catalysts for Oxygen Reduction Reaction

Recent Advances in Phosphorus‐Coordinated Transition Metal Single‐Atom Catalysts for Oxygen Reduction Reaction

Transition‐Metal Phosphides: Activity Origin, Energy‐Related Electrocatalysis Applications, and Synthetic Strategies

Recent Advances in Single-Atom Electrocatalysts for Oxygen Reduction Reaction

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