Single-atom cobalt array bound to distorted 1T MoS2 with ensemble effect for hydrogen evolution catalysis

Qi, Kun; Cui, Xiaoqiang; Gu, Lin; Yu, Shansheng; Fan, Xiaofeng; Luo, Mingchuan; Xu, Shan; Li, Ningbo; Zheng, Lirong; Zhang, Qinghua; Ma, Jingyuan; Gong, Yue; Lv, Fan; Wang, Kai; Huang, Hai‐Hua; Zhang, Wei; Guo, Shaojun; Zheng, Weitao; Liu, Ping

doi:10.1038/s41467-019-12997-7

Cited by 438 publications

(349 citation statements)

References 57 publications

Supporting

Mentioning

341

Contrasting

Order By: Relevance

“…2e ). A slight discrepancy could be explained by the localized structural distortion due to the attachment of Pt atoms 20 , 21 . Moreover, analysis by STEM coupled with energy-dispersive X-ray spectroscopy (STEM-EDS) revealed that atomic Pt was homogeneously dispersed over the whole material (Fig.…”

Section: Resultsmentioning

confidence: 99%

Site-specific electrodeposition enables self-terminating growth of atomically dispersed metal catalysts

et al. 2020

View full text Add to dashboard Cite

The growth of atomically dispersed metal catalysts (ADMCs) remains a great challenge owing to the thermodynamically driven atom aggregation. Here we report a surface-limited electrodeposition technique that uses site-specific substrates for the rapid and room-temperature synthesis of ADMCs. We obtained ADMCs by the underpotential deposition of a non-noble single-atom metal onto the chalcogen atoms of transition metal dichalcogenides and subsequent galvanic displacement with a more-noble single-atom metal. The site-specific electrodeposition enables the formation of energetically favorable metal–support bonds, and then automatically terminates the sequential formation of metallic bonding. The self-terminating effect restricts the metal deposition to the atomic scale. The modulated ADMCs exhibit remarkable activity and stability in the hydrogen evolution reaction compared to state-of-the-art single-atom electrocatalysts. We demonstrate that this methodology could be extended to the synthesis of a variety of ADMCs (Pt, Pd, Rh, Cu, Pb, Bi, and Sn), showing its general scope for functional ADMCs manufacturing in heterogeneous catalysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Site-specific electrodeposition enables self-terminating growth of atomically dispersed metal catalysts

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Considering these results, the reaction process driven by Rh doped CoFe-ZLDH follows the Volmer-Heyrovsky mechanism to achieve a rapidly increasing hydrogen evolution rate under the application of voltage. As shown in Figure 3c and Table S2 in the Supporting Information, Rh-doped CoFe-ZLDH outperforms many other previously reported state-of-art HER electrocatalysts, such as Rh 2 P, [41] L-Ag, [42] single atomic Co supported on phosphorized carbon nitride nanosheets (Co 1 /PCN), [43] NiMoO x -Ni(OH) 2 /NF, [44] interface catalyst consisting of atomic cobalt array covalently bound to distorted 1T MoS 2 nanosheets (SA Co-D 1T MoS 2 ), [45] Pt clusters in hollow mesoporous carbon spheres (Pt 5 /HMCS), [46] Ni-Fe nanoparticle (Ni-Fe NF), [39] oxygen vacancy enrich CoFe 2 O 4 (r-CFO), [47] CoFeP TAPs/Ni, [48] nickel-molybdenum-nitride nanoplates on carbon fiber cloth (Ni-Mo-N/CFC), [40] Ru SA -N-S-Ti 3 C 2 T x , [9] W-CoP NAs-CC, [49] MoP@NCHs-900, [50] Co 9 S 8 @C, [51] and Co 0.31 Mo 1.69 C/MXene/NC. [52] The cyclic voltammetry (CV) method was utilized to calculate the electrochemical double-layer capacitance (C dl ) to reflect the electrochemical active area (ECSA).…”

Section: Electrocatalytic Propertiesmentioning

confidence: 94%

Etching‐Doping Sedimentation Equilibrium Strategy: Accelerating Kinetics on Hollow Rh‐Doped CoFe‐Layered Double Hydroxides for Water Splitting

Zhu

Chen

Wang

et al. 2020

Adv Funct Materials

135

View full text Add to dashboard Cite

Exploring highly active and inexpensive bifunctional electrocatalysts for water‐splitting is considered to be one of the prerequisites for developing hydrogen energy technology. Here, an efficient simultaneous etching‐doping sedimentation equilibrium (EDSE) strategy is proposed to design and prepare hollow Rh‐doped CoFe‐layered double hydroxides for overall water splitting. The elaborate electrocatalyst with optimized composition and typical hollow structure accelerates the electrochemical reactions, which can achieve a current density of 10 mA cm−2 at an overpotential of 28 mV (600 mA cm−2 at 188 mV) for hydrogen evolution reaction (HER) and 100 mA cm−2 at 245 mV for oxygen evolution reaction (OER). The cell voltage for overall water splitting of the electrolyzer assembled by this electrocatalyst is only 1.46 V, a value far lower than that of commercial electrolyzer constructed by Pt/C and RuO2 and most reported bifunctional electrocatalysts. Furthermore, the existence of Fe vacancies introduced by Rh doping and the typical hollow structure are demonstrated to optimize the entire HER and OER processes. EDSE associates doping with template‐directed hollow structures and paves a new avenue for developing bifunctional electrocatalysts for overall water splitting. It is also believed to be practical in other catalysis fields as well.

show abstract

“…Here, different synthetic strategies for single metal atom-doped MoS 2 are summarized and discussed ( Fig. 2a-f [36][37][38][39][40][41]).…”

Section: Synthesismentioning

confidence: 99%

Recent advances in single metal atom-doped MoS2 as catalysts for hydrogen evolution reaction

Fei

2020

Tungsten

View full text Add to dashboard Cite

The development of low-cost and highly efficient electrocatalysts for hydrogen evolution reaction (HER) is critical to the widespread applications of water splitting technology. In recent years, many efforts are devoted to exploring HER catalysts with high activity and stability based on non-precious metals. Benefited from the advantages of two-dimensional (2D) materials with unique physicochemical properties along with the single-atom catalysts with high activity, excellent stability and maximized atom utility efficiency, a new category of catalysts with 2D materials confining single atoms have shown great promises as high-performance HER catalysts. In this review, MoS 2 , as one of the typical 2D materials, doped with various single metal atoms as HER catalysts are fully discussed, including different synthetic strategies, catalytic performances and mechanisms toward HER as well as the major challenges ahead.

show abstract

Single-atom cobalt array bound to distorted 1T MoS2 with ensemble effect for hydrogen evolution catalysis

Cited by 438 publications

References 57 publications

Site-specific electrodeposition enables self-terminating growth of atomically dispersed metal catalysts

Site-specific electrodeposition enables self-terminating growth of atomically dispersed metal catalysts

Etching‐Doping Sedimentation Equilibrium Strategy: Accelerating Kinetics on Hollow Rh‐Doped CoFe‐Layered Double Hydroxides for Water Splitting

Recent advances in single metal atom-doped MoS2 as catalysts for hydrogen evolution reaction

Contact Info

Product

Resources

About