Cobalt phosphide nanocage@ferric-zinc mixed-metal phosphide nanotube hierarchical nanocomposites for enhanced overall water splitting

胡晓炜,; 尹永恒,; 刘伟,; 张兴旺,; 张红秀,

doi:10.1016/s1872-2067(19)63299-7

Cited by 18 publications

(4 citation statements)

References 55 publications

(54 reference statements)

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“…Recently, transition-metal phosphides (TMPs) have been reported to be efficient electrocatalysts for water electrolysis. 20 − 22 Their high activity and stability, natural abundance, and low cost make them promising alternatives to noble metals. Transition-metal carbides (TMCs) such as iron carbides also show promising performance in the ORR.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, transition-metal phosphides (TMPs) have been reported to be efficient electrocatalysts for water electrolysis. − Their high activity and stability, natural abundance, and low cost make them promising alternatives to noble metals. Transition-metal carbides (TMCs) such as iron carbides also show promising performance in the ORR. , The formation of heterogeneous structures between different substances can combine different properties, resulting in a multifunctional electrocatalyst. − The previous research demonstrated that interfacial engineering of electrocatalysts was proved to be efficient in improving electrocatalytic performance .…”

Section: Introductionmentioning

confidence: 99%

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Interfacial Engineering of a Phase-Controlled Heterojunction for High-Efficiency HER, OER, and ORR Trifunctional Electrocatalysis

Tang

Wang

et al. 2022

ACS Omega

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The development of low-cost and high-performance electrocatalysts for simultaneously boosting the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR) is highly crucial but still challenging. Herein, a facile one-step solid-phase polymerization and confined pyrolysis strategy is developed for scalable synthesis of a Fe x P/Fe 3 C-based ( x = 1, 2) heterojunction with controllable iron phosphide crystal phases. By effective heterojunction interface regulation, the strong synergic effect between FeP/Fe 3 C and N- and P-codoped carbon (NPC) modified the electronic structure, resulting in an excellent electrocatalytic performance for the HER, OER, and ORR synchronously. Typically, the FeP/Fe 3 C@NPC catalyst exhibits efficient HER activity with a low overpotential of 10 mA cm –2 for the HER (97 mV) and OER (440 mV) and a high half-wave potential of 0.87 V for the ORR, as well as excellent stability in alkaline media. Theoretical calculations demonstrated that Fe 3 C can promote the activation of water molecules, while FeP is beneficial to the removal of H 2 and the FeP/Fe 3 C heterojunction can facilitate both Volmer and Heyrovsky steps in the HER process simultaneously. Moreover, FeP has a stronger inhibitory effect on OH adsorption, revealing that the FeP/Fe 3 C heterojunction also shows a better promoting effect for both the OER and ORR, respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interfacial Engineering of a Phase-Controlled Heterojunction for High-Efficiency HER, OER, and ORR Trifunctional Electrocatalysis

Tang

Wang

et al. 2022

ACS Omega

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“…With the continuous development of organic chemistry, chloride now has played an indelible role in industrial applications. , However, the harm to the human and the environment caused by chlorides have also prompted us to exploit advanced degradation catalysts. , Among the most researched catalysts today, transition metal phosphides (TMPs) have good chemical stability and electrical conductivity and are expected to replace expensive noble metals. − Therefore, TMPs have become promising catalysts in the hydrodechlorination (HDC) reaction. MoP, in particular, has become a research hotspot because of its single crystal structure and mature research system. − Also, due to the large radius of P, the strength of Mo is reduced when it enters the metal lattice, leading to the instability of the lattice structure .…”

Section: Introductionmentioning

confidence: 99%

Non-Negligible Oxygen Atoms in Transition Metal Phosphides: Research on the Role of Oxygen in Hydrodechlorination

et al. 2021

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Environmental pressure gives potential for the application of transition metal phosphides (TMPs), which serve as efficient degradation catalysts. Although various efforts are advocated to obtain high activity, it is still difficult for phosphides to exhibit cycle performance in hydrodechlorination (HDC), limiting their practical development. By linking the changes in the oxidation state of MoP before and after HDC with its catalytic performance, the Mo−P−O bond is found to be the active catalytic site, not only promoting electron transfer but also forming the defect-rich structure. Based on this, H 2 O 2 -treated MoP after HDC reached a performance of 19.9%, and the activity could be restored after multiple cycle reactions, while the untreated one still had poor performance, demonstrating that carrying out the H 2 O 2 treatment process can realize the recycling of MoP, which is of importance for industrial application of catalysts.

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“…So far, a variety of transition metal-based electrocatalysts for HER have been developed, such as sulfides, 9 nitrides, 10 phosphides, 2,11 oxyhydroxides 12 and carbides. 13 Recent studies have shown that transition metal carbides (TMCs, M=Fe, Co and Ni) synthesized from the abundant non-precious metals on earth are also a promising electrocatalyst for HER.…”

mentioning

confidence: 99%

Ni@Ni₃C Nanochain-SWCNT Composite with Comparable Electrocatalysis of Benchmark Pt/C for Hydrogen Evolution Reaction

Liu

Zhan

et al. 2020

J. Electrochem. Soc.

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Developing robust and low-cost electrocatalysts for efficient hydrogen evolution reaction (HER) through facile methods is of great significance to the energy and environment sustainability. Herein, a simple one-pot solvothermal method has been developed to synthesize a hybrid material of nickel@nickel carbide (Ni@Ni 3 C) nanochain embedded in a network of single-walled carbon nanotubes (SWCNTs). The electrochemical experiments indicate that the composite of Ni@Ni 3 C-SWCNTs has the HER electrocatalytic performance comparable to that of Pt/C in an acidic medium (0.5 M H 2 SO 4 ). The overpotential to reach a current density of 10 mA cm −2 in 0.5 M H 2 SO 4 is only −74 mV with a Tafel slope of 46.9 mV dec −1 . Compared to Ni@Ni 3 C in the absence of SWCNTs, the enhanced HER performance of Ni@Ni 3 C-SWCNTs can be attributed to the increased intrinsic activity, improved electronic conductivity, and the electron coupling effect between Ni@Ni 3 C and SWCNTs. The Ni@Ni 3 C-SWCNTs composites also show high stability at the overpotential of −0.2 V for 24 h. This work provides guidance for the synthesis of highperformance non-precious metal electrocatalysts for HER.

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Cobalt phosphide nanocage@ferric-zinc mixed-metal phosphide nanotube hierarchical nanocomposites for enhanced overall water splitting

Cited by 18 publications

References 55 publications

Interfacial Engineering of a Phase-Controlled Heterojunction for High-Efficiency HER, OER, and ORR Trifunctional Electrocatalysis

Interfacial Engineering of a Phase-Controlled Heterojunction for High-Efficiency HER, OER, and ORR Trifunctional Electrocatalysis

Non-Negligible Oxygen Atoms in Transition Metal Phosphides: Research on the Role of Oxygen in Hydrodechlorination

Ni@Ni₃C Nanochain-SWCNT Composite with Comparable Electrocatalysis of Benchmark Pt/C for Hydrogen Evolution Reaction

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Cobalt phosphide nanocage@ferric-zinc mixed-metal phosphide nanotube hierarchical nanocomposites for enhanced overall water splitting

Cited by 18 publications

References 55 publications

Interfacial Engineering of a Phase-Controlled Heterojunction for High-Efficiency HER, OER, and ORR Trifunctional Electrocatalysis

Interfacial Engineering of a Phase-Controlled Heterojunction for High-Efficiency HER, OER, and ORR Trifunctional Electrocatalysis

Non-Negligible Oxygen Atoms in Transition Metal Phosphides: Research on the Role of Oxygen in Hydrodechlorination

Ni@Ni3C Nanochain-SWCNT Composite with Comparable Electrocatalysis of Benchmark Pt/C for Hydrogen Evolution Reaction

Contact Info

Product

Resources

About

Ni@Ni₃C Nanochain-SWCNT Composite with Comparable Electrocatalysis of Benchmark Pt/C for Hydrogen Evolution Reaction