Boride-induced phase tuning of defect-introduced MoS<sub>2</sub> nanosheets to boost the electrocatalytic hydrogen evolution reaction

Lee, Dong Wook; Jin, Xiaoyan; Yun, So Yeon; Hwang, Seong-Ju

doi:10.1039/d3ta05076a

J. Mater. Chem. A

2023

DOI: 10.1039/d3ta05076a

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Boride-induced phase tuning of defect-introduced MoS₂ nanosheets to boost the electrocatalytic hydrogen evolution reaction

Dong Wook Lee,

Xiaoyan Jin,

So Yeon Yun

et al.

Abstract: Transition metal dichalcogenides have garnered intense research interest owing to their promising functionalities as non-noble-metal catalysts. However, their catalytic activity and structural instability must be further improved. In this study,...

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Cited by 5 publications

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3D Printing of Tungstate Anion Modulated 1T‐MoS₂ Composite Cathodes for High‐Performance Lithium–Sulfur Batteries

Zhang,

Xie,

et al. 2024

Advanced Energy Materials

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Lithium–sulfur (Li–S) batteries can offer high capacity and energy‐density, but face challenges like low conductivity, lithium polysulfides (LiPSs) shuttling, and limited reaction kinetics. In this study, the electronic configuration of Mo 4d orbital in MoS2 is modulated through a one‐step method involving tungstate anion (WO42−) modulation to form a stable 1T‐MoS2/carbon composite (1T‐W‐MoS2/C). When WO42− is introduced, it causes a transfer of electrons to Mo in 2H‐MoS2, resulting in the generation of a stable 1T phase. In the composite, 1T‐MoS2 nanosheets exhibit remarkable electronic conductivity, hydrophilicity, and catalytic activity, facilitating the LiPSs adsorption and Li+ transport. Meanwhile, the WO42− modulation can create abundant adsorption/catalytic sites with defects on the basal surface and edges of MoS2, facilitating the efficient catalysis of LiPSs conversion. Furthermore, the 3D‐printed electrodes without utilization of binders and current collectors can ensure high mass loading and promote ion diffusion and electrolyte penetration. Theoretical and experimental results confirm that 1T‐W‐MoS2/C can catalyze LiPSs conversion, suppress LiPSs shuttling, and enhance sulfur reaction kinetics. Therefore, the 3D‐printed 1T‐W‐MoS2/C/S cathode exhibits a high initial capacity and excellent rate capability, achieving an areal capacity of 7.37 mAh cm−2 with a sulfur loading of 8.89 mg cm−2.

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3D Printing of Tungstate Anion Modulated 1T‐MoS₂ Composite Cathodes for High‐Performance Lithium–Sulfur Batteries

Zhang,

Xie,

et al. 2024

Advanced Energy Materials

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Stabilizing and Activating Active Sites: 1T‐MoS₂ Supported Pd Single Atoms for Efficient Hydrogen Evolution Reaction

Zhao,

Liang,

Zhang

et al. 2024

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Metallic 1T‐MoS2 with high intrinsic electronic conductivity performs Pt‐like catalytic activity for hydrogen evolution reaction (HER). However, obtaining pure 1T‐MoS2 is challenging due to its high formation energy and metastable properties. Herein, an in situ SO42−‐anchoring strategy is reported to synthesize a thin layer of 1T‐MoS2 loaded on commercial carbon. Single Pd atoms, constituting a substantial loading of 7.2 wt%, are then immobilized on the 1T‐phase MoS2 via Pd─S bonds to modulate the electronic structure and ensure a stable active phase. The resulting Pd1/1T‐MoS2/C catalyst exhibits superior HER performance, featuring a low overpotential of 53 mV at the current density of 10 mA cm−2, a small Tafel slope of 37 mV dec−1, and minimal charge transfer resistance in alkaline electrolyte. Moreover, the catalyst also demonstrates efficacy in acid and neutral electrolytes. Atomic structural characterization and theoretical calculations reveal that the high activity of Pd1/1T‐MoS2/C is attributed to the near‐zero hydrogen adsorption energy of the activated sulfur sites on the two adjacent shells of atomic Pd.

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Crystal plane engineering-tailored Co-Ni bimetallic sites in CoNiO2 to achieve efficient photocatalytic CO2 reduction

Zhang,

Cao,

et al. 2025

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Boride-induced phase tuning of defect-introduced MoS₂ nanosheets to boost the electrocatalytic hydrogen evolution reaction

Abstract: Transition metal dichalcogenides have garnered intense research interest owing to their promising functionalities as non-noble-metal catalysts. However, their catalytic activity and structural instability must be further improved. In this study,...

Cited by 5 publications

References 53 publications

3D Printing of Tungstate Anion Modulated 1T‐MoS₂ Composite Cathodes for High‐Performance Lithium–Sulfur Batteries

3D Printing of Tungstate Anion Modulated 1T‐MoS₂ Composite Cathodes for High‐Performance Lithium–Sulfur Batteries

Stabilizing and Activating Active Sites: 1T‐MoS₂ Supported Pd Single Atoms for Efficient Hydrogen Evolution Reaction

Crystal plane engineering-tailored Co-Ni bimetallic sites in CoNiO2 to achieve efficient photocatalytic CO2 reduction

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Boride-induced phase tuning of defect-introduced MoS2 nanosheets to boost the electrocatalytic hydrogen evolution reaction

Abstract: Transition metal dichalcogenides have garnered intense research interest owing to their promising functionalities as non-noble-metal catalysts. However, their catalytic activity and structural instability must be further improved. In this study,...

Cited by 5 publications

References 53 publications

3D Printing of Tungstate Anion Modulated 1T‐MoS2 Composite Cathodes for High‐Performance Lithium–Sulfur Batteries

3D Printing of Tungstate Anion Modulated 1T‐MoS2 Composite Cathodes for High‐Performance Lithium–Sulfur Batteries

Stabilizing and Activating Active Sites: 1T‐MoS2 Supported Pd Single Atoms for Efficient Hydrogen Evolution Reaction

Crystal plane engineering-tailored Co-Ni bimetallic sites in CoNiO2 to achieve efficient photocatalytic CO2 reduction

Contact Info

Product

Resources

About

Boride-induced phase tuning of defect-introduced MoS₂ nanosheets to boost the electrocatalytic hydrogen evolution reaction

3D Printing of Tungstate Anion Modulated 1T‐MoS₂ Composite Cathodes for High‐Performance Lithium–Sulfur Batteries

3D Printing of Tungstate Anion Modulated 1T‐MoS₂ Composite Cathodes for High‐Performance Lithium–Sulfur Batteries

Stabilizing and Activating Active Sites: 1T‐MoS₂ Supported Pd Single Atoms for Efficient Hydrogen Evolution Reaction