Heterogeneous bimetallic sulfides based seawater electrolysis towards stable industrial-level large current density

Wang, Chengzhong; Zhu, Mingze; Cao, Zhanyi; Zhu, Ping; Cao, Yunqing; Xu, Xiaoyong; Xu, Chunxiang; Yin, Zongyou

doi:10.1016/j.apcatb.2021.120071

Cited by 194 publications

(122 citation statements)

References 34 publications

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“…Metal chalcogenides such as sulfides 70,72,85,91 and selenides 44,70,89,90,92,93 have demonstrated highly efficient performance in catalyzing HER-OER. Frequently investigated metal chalcogenides for water splitting include Ni- 70,86,94 ，Co- 95,96 , Mo-(MoS 2 97,98 and MoSe 2 99,100 ) and W-101 chalcogenides.…”

Section: Metal Chalcogenidesmentioning

confidence: 99%

Electrocatalysis enabled transformation of earth-abundant water, nitrogen and carbon dioxide for a sustainable future

et al. 2022

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Section: Metal Chalcogenidesmentioning

confidence: 99%

Electrocatalysis enabled transformation of earth-abundant water, nitrogen and carbon dioxide for a sustainable future

et al. 2022

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“…Compared with recently reported overall electrolysis performances (Figure 5d), the as-constructed couple could be an ideal candidate for e cient hydrogen production. 8,13,[50][51][52][53][54][55][56] The electrocatalytic performance of NiFeN-NiTe || NiCoN-NiTe in further high temperature testing (60℃) shows signi cantly improved catalytic activity, demonstrating the positive response of reactivity activity to temperature changes, while also suggesting a new direction for heat utilization (Figure S19). A self-installed solar-powered system was assembled with an output voltage of 1.9 V (Figure S20a and Video S1) and actuated by a wind-powered system at about 1.7 V (Figure S20b and Video S2).…”

Section: Overall Seawater Electrolysis Performancementioning

confidence: 99%

Metal telluride-nitride electrocatalysts for sustainably overall seawater electrolysis

Yang

et al. 2021

Preprint

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High-efficiency alkaline seawater electrolysis is a promising strategy to promote the sustainability of wide-ranging hydrogen (H2) production, and the global goal of carbon neutrality. Searching for an ideal candidate with low cost and high electrocatalytic performance for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) is a major objective. Herein, we report delicate, heterostuctured NiTe-NiCoN and NiTe-NiFeN electrocatalysts constructed of nickel cobalt nitride and nickel iron nitride nanosheets uniformly anchored on NiTe nanorod arrays, respectively, which ensure outstanding HER and OER activity along with ultra-long-term stability. Impressively, the NiTe-NiCoN || NiTe-NiFeN couples in alkaline seawater solution delivered 500 mA cm−2 at a record low voltage of 1.84 V, and realized an industry-level performance via a solar-powered system and a wind-power system. Further comprehensive analysis has revealed that interface engineering strategy not only ensures that the surficial nitride exposes abundant active sites, but also induces electron modulation that optimizes the binding strength of absorption/desorption for the reaction intermediates to enhanced the the intrinsic activity, as well as facilitate faster electron-mass transfer. Notably, a high electric field intensity generated by the unique nanosheet-nanorod structure induces a local “hydroxide enrichment” environment that effectively promotes the OER kinetics, while inhibits the side effects of chlorine. This work shed lights on these novel heterostructured electrocatalysts with strong synergy, while demonstrating the key role of the unique nanostructures in high-efficiency seawater electrolysis.

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“…In the context of the low-carbon and energy transition, pure water electrolysis is demonstrating a rapid development trend on a global scale [1][2][3][4][5]. Given the scarcity of pure water under natural conditions [6], hydrogen production via seawater electrolysis has a higher practical application value [7]. Nonetheless, the inevitable oxygen evolution reaction (OER) and competitive chlorine evolution reaction (ClER) on the anode limit the performance of seawater splitting.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, for seawater splitting in alkaline media, chloride anions react with OH − at the anode to form hypochlorite, triggering the anodic chlorine evolution reaction, thus resulting in electrode corrosion and environmental pollution, which reduces electrolysis efficiency and sustainability [11,12]. It should also be noted that the required voltage for the formation of hypochlorite in seawater [13] is only about 480 mV higher than that required for anodic OER under alkaline conditions, offering limited space for hydrogen economy development and making ClER the bottleneck for realizing bifunctional catalysis [7]. As a result, alternative techniques for overcoming the thermodynamically sluggish anodic reaction in seawater splitting are highly desired.…”

Section: Introductionmentioning

confidence: 99%

Dual-strategy of hetero-engineering and cation doping to boost energy-saving hydrogen production via hydrazine-assisted seawater electrolysis

Chi

Liu

et al. 2022

Sci. China Mater.

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When compared with pure water, hydrogen produced by seawater electrolysis has a better practical application potential. By replacing the oxygen evolution reaction (OER) and competitive chlorine evolution reaction (ClER) with the thermodynamically favorable anodic hydrazine oxidation reaction (HzOR) in alkaline seawater, energy-saving hydrogen production can be achieved. In this study, Fe/Co dual-doped Ni 2 P and MIL-FeCoNi heterostructures (FeCo-Ni 2 P@MIL-FeCoNi) arrays with simultaneous cation doping and hetero-engineering provide excellent bifunctional electrocatalytic performance for HzOR and hydrogen evolution reaction (HER) in alkaline seawater electrolyte. Overall hydrazine splitting (OHzS) in seawater is impressive, with a low cell voltage of only 400 mV required to reach 1000 mA cm −2 and stable operation for 1000 h to maintain above 500 mA cm −2 . As a proof-of-concept, the OHzS system can save 3.03 kW h when producing 1.0 L of H 2 when compared with the N 2 H 4 -free seawater system, resulting in energy-saving H 2 production. Density functional theory calculations show that the combination of Co-doping and the fabrication of FeCo-Ni 2 P and MIL-FeCoNi heterointerfaces can result in a low water dissociation barrier, optimized hydrogen adsorption free energy toward HER, and favorable adsorbed dehydrogenation kinetics for HzOR. This processing route paves the way for a practical approach to the efficient utilization of hydrogen, which is abundant in the ocean energy field, to achieve a carbon-neutral hydrogen economy.

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Heterogeneous bimetallic sulfides based seawater electrolysis towards stable industrial-level large current density

Cited by 194 publications

References 34 publications

Electrocatalysis enabled transformation of earth-abundant water, nitrogen and carbon dioxide for a sustainable future

Electrocatalysis enabled transformation of earth-abundant water, nitrogen and carbon dioxide for a sustainable future

Metal telluride-nitride electrocatalysts for sustainably overall seawater electrolysis

Dual-strategy of hetero-engineering and cation doping to boost energy-saving hydrogen production via hydrazine-assisted seawater electrolysis

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