A 3D-composite structure of FeP nanorods supported by vertically aligned graphene for the high-performance hydrogen evolution reaction

Li, Dongqi; Liao, Qingyu; Ren, Bowen; Jin, Qiuyan; Cui, Hao; Wang, Chengxin

doi:10.1039/c7ta02149f

Cited by 93 publications

(58 citation statements)

References 42 publications

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“…The as‐produced cathode shows remarkable activity and stability towards acidic HER. A similar strategy was used by Li et al, but with an additional initial step to cover CC current collector with vertically aligned graphene nanosheets . After ED and phosphorization, the obtained FeP nanorods showed remarkably low η 10 =53 mV, as well as a small T S =42 mV dec −1 .…”

Section: Recent Advances In Synthesismentioning

confidence: 96%

Structure–Activity Relationships for Pt‐Free Metal Phosphide Hydrogen Evolution Electrocatalysts

Owens‐Baird

Kolen’ko

Kovnir

2017

Chemistry A European J

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In the field of renewable energy, the splitting of water into hydrogen and oxygen fuel gases using water electrolysis is a prominent topic. Traditionally, these catalytic processes have been performed by platinum-group metal catalysts, which are effective at promoting water electrolysis but expensive and rare. The search for an inexpensive and Earth-abundant catalyst has led to the development of 3d-transition-metal phosphides for the hydrogen evolution reaction. These catalysts have shown excellent activity and stability. In this review, we discuss the electronic and crystal structures of bulk and surface of selected Fe, Co, and Ni phosphides, and their relationships to the experimental catalytic activity. The various synthetic protocols towards the state-of-the-art transition metal phosphide electrocatalysts are also discussed.

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Section: Recent Advances In Synthesismentioning

confidence: 96%

Structure–Activity Relationships for Pt‐Free Metal Phosphide Hydrogen Evolution Electrocatalysts

Owens‐Baird

Kolen’ko

Kovnir

2017

Chemistry A European J

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“…The Nyquist plots in Figure c display visible semicircles, of which the diameter corresponds to charge transfer resistance ( R ct ). CoNiMo‐O/H 2 ‐450 shows the smallest R ct of 1.8 Ω, suggesting a more efficient electron transport at the electrode−electrolyte interface ,…”

Section: Results and Disscussionmentioning

confidence: 99%

In‐situ Tailoring Cobalt Nickel Molybdenum Oxide Components for Overall Water‐Splitting at High Current Densities

Ren

Jin

et al. 2018

ChemElectroChem

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Developing non‐precious bifunctional electrocatalysts to drive the over water splitting that can operate well at high current densities (1,000 mA/cm2) is an urgent requirement for viable electrolysis of water. Transition metal oxides (TMO) have been intensely investigated as one of the most efficient oxygen evolution reaction (OER) catalysts. Unfortunately, their sluggish reaction kinetics towards hydrogen evolution reaction (HER) bring about poor overall performance. In this study, we perform a simple method to obtain the bifunctional TMO‐based electrocatalyst by in‐situ tailoring the components of cobalt nickel molybdenum oxide on nickel foam. By optimizing the annealing temperature and reaction atmosphere, we integrate HER‐active (CoMoNi) and OER‐active (CoMoOx) components together as bifunctional electrocatalysts for overall water splitting. Impressively, the as‐synthesized electrocatalyst shows the high electrocatalytic activity for both OER and HER, and exhibit a low cell voltage of 1.59 V at 10 mA cm−2 when applied as both the cathode and anode in alkaline solutions. Impressively, the bifunctional electrocatalysts work well at large current densities, even in the order of 1,000 mA cm−2 (only need the cell voltage of ∼2.03 V), and remain its activity more than 20 h. Such an outstanding performance should be mainly attributed to integrated high electronic conductivity, 3D self‐supported structure, and good compatibility between HER‐active and OER‐active components. This study shows a positive model for the design of more promising and practical catalysts for full water splitting.

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“…The high‐resolution Fe 2P in the Figure c shows that four peaks located at 706.6 eV, 711.0 eV, 719.5 eV and 724.5 eV, respectively. The main peaks at 711.0 eV and 724.5 eV are corresponded to the electron binding energy for Fe in iron phosphides . The satellite peak of 719.5 eV belongs to the characterization of Fe 3+ .…”

Section: Resultsmentioning

confidence: 99%

“…[8][9][10][11][12][13] Among various high-efficient anode materials for Na storage, transitional metal phosphides have unique physical properties and electrochemical characteristics in energy storage and electro catalysis, due to the existence of multi-electron orbitals. [14][15][16][17][18] Transitional metal phosphides as anode materials have relatively low redox potential result in a full cell with a high output voltage. Such as tin phosphides, iron phosphides, and several other metal phosphides are all electrochemically active in sodium ion batteries.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Hierarchical Iron Phosphide/Biomass Carbon Composites for Binder‐Free Sodium‐Ion Batteries

Chen

et al. 2019

Batteries & Supercaps

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Seeking a simple direct construction strategy for transition‐metal‐phosphide‐based composites as anodes for sodium‐ion batteries is attracting great attention for the development of high‐performance sodium‐ion batteries. In this work, we design iron phosphide nanosheets grown on a biomass carbon membrane by a facile electrodeposition method, followed by an annealing process. The biomass carbon membranes as three dimensional frameworks, possessing initial biological structures from Magnolia leaves, do not only improve the conductivity of the electrodes but also relieve iron phosphide aggregation during the charging‐discharging processes. The iron phosphide nanosheets could increase the accessible surface area for electrochemical reactions, further promoting the storage of sodium ions. Due to the unique structure of the iron phosphide nanosheets/biomass carbon membrane, the electrodes exhibit 500.9 mAh g−1 at a current density of 50 mA g−1 after 100 cycles. Even at a high current density of 500 mA g−1, the electrodes still retain 197 mAh g−1 after a long‐time test (500 cycles). These novel features make the composite a great potential anode material for binder‐free sodium‐ion batteries.

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A 3D-composite structure of FeP nanorods supported by vertically aligned graphene for the high-performance hydrogen evolution reaction

Abstract: A 3D-composite structure of FeP nanorods on vertically aligned graphene nanosheets has been fabricated for the high-performance hydrogen evolution reaction.

Cited by 93 publications

References 42 publications

Structure–Activity Relationships for Pt‐Free Metal Phosphide Hydrogen Evolution Electrocatalysts

Structure–Activity Relationships for Pt‐Free Metal Phosphide Hydrogen Evolution Electrocatalysts

In‐situ Tailoring Cobalt Nickel Molybdenum Oxide Components for Overall Water‐Splitting at High Current Densities

Facile Synthesis of Hierarchical Iron Phosphide/Biomass Carbon Composites for Binder‐Free Sodium‐Ion Batteries

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