Two-dimensional stable and ultrathin cluster-based metal–organic layers for efficient electrocatalytic water oxidation

Yu, Binbin; Hua, Yi-Wei; Huang, Qi; Ye, Siyuan; Zhang, Hao-Dong; Zheng, Yan; Li, Ruiwen; Wu, Jun; Meng, Yan; Cao, Xuebo

doi:10.1039/d1ce00350j

Cited by 4 publications

(6 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…50,51 Actually, the activity of the catalyst is significantly dependent on its surface structure due to its different local coordination structures and electronic structures. [52][53][54] Furthermore, a catalyst containing Ni 2+ catalytic centers benefits from increasing the conductivity of materials. 55,56 Thus, constructing different crystal facets of bulky Ni-MOFs to 2D-MOLs is perceived to be an effective strategy to acquire MOFs-based high-performance photocatalyst cocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Activating photocatalytic hydrogen evolution by constructing Ni-based organic layers and tailoring its crystal facets

Wang

Song

et al. 2023

Mater. Chem. Front.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Activating photocatalytic hydrogen evolution by constructing Ni-based organic layers and tailoring its crystal facets

Wang

Song

et al. 2023

Mater. Chem. Front.

View full text Add to dashboard Cite

show abstract

“…The Kagoḿe crystal lattice was first reported by Niu's group 42 and a few research projects had developed on this structure, like high-performance supercapacitors, 41 efficient lithium storage, 43 and electrocatalytic oxygen evolution. 44 with the described structural evolution process. In addition, the peak with 2θ = 11°starts to be generated from the time the sample comes into contact with the alkaline solution, and the peak intensity does not change significantly as the reaction progresses.…”

Section: ■ Introductionmentioning

confidence: 99%

Self-Reconstructed Two-Dimensional Cluster-Based Co–Organic Layer Heterojunctions for Enhanced Oxygen Evolution Reactions

Wu,

Zhao,

Hua

et al. 2023

Inorg. Chem.

Self Cite

View full text Add to dashboard Cite

When it comes to an efficient catalytic oxygen evolution reaction (OER) in the production of renewable energy and chemicals, the construction of heterogeneous structures is crucial to break the linear scalar relationship of a single catalyst. This heterogeneous structure construction helps creatively achieve high activity and stability. However, the synthesis process of heterogeneous crystalline materials is often complex and challenging to capture and reproduce, which limits their application. Here, the dynamic process of structural changes in Co-MOFs in alkali was captured by in situ powder X-ray diffraction, FT-IR spectroscopy, and Raman spectroscopy, and several self-reconfigured MOF heterogeneous materials with different structures were stably isolated. The created β-Co(OH)2/Co-MOF heterojunction structure facilitates rapid mass–charge transfer and exposure of active sites, which significantly enhanced OER activity. Experimental results show that this heterogeneous structure achieves a low overpotential of 333 mV at 10 mA cm–2. The findings provide new insights and directions for the search for highly reactive cobalt-based MOFs for sustainable energy technologies.

show abstract

“…Herein, we focus on inducing metal clusters in 2D layered crystalline MOFs. These bimetallic Ni x Co 1– x -CMOLs were facilely prepared by a hydrothermal method modified . The similar radii sizes of Co 2+ and Ni 2+ make it possible to substitute Ni-CMOL with cobalt without causing a serious lattice change.…”

Section: Introductionmentioning

confidence: 99%

“…These bimetallic Ni x Co 1−x -CMOLs were facilely prepared by a hydrothermal method modified. 46 The similar radii sizes of Co 2+ and Ni 2+ make it possible to substitute Ni-CMOL with cobalt without causing a serious lattice change. However, the Co 2+ partially substitutes the Ni 2+ in the Ni-CMOL, which may result in an increase in lattice defects and, therefore, an enhancement of the CMOL's activity.…”

Section: ■ Introductionmentioning

confidence: 99%

Highly Stable Two-Dimensional Cluster-Based Ni/Co–Organic Layers for High-Performance Supercapacitors

et al. 2022

Inorg. Chem.

Self Cite

View full text Add to dashboard Cite

Basic requirements for advanced and practical supercapacitors need electrode materials with strong stability, high surface area, well-defined porosity, and enhanced capability of ion insertion and electron transfer. It is worth mentioning that the two-dimensional cluster-based Ni/Co−organic layer (Ni 0.7 Co 0.3 -CMOL) inherits high stability from the Kagoḿe lattice and shows excellent pseudocapacitance behavior. As an optimized atomic composition, this crystalline CMOL exhibits excellent performance and stability both in 1.0 M KOH and All-Solid-State Flexible Asymmetric Supercapacitor (ASCs). The specific capacitance values are 1211 and 394 F g −1 and the energy density is 54.67 Wh kg −1 at 1 A g −1 . Good cycling stability is characterized by its capacitance retention, maintained at 92.4% after 5000 cycles in a three-electrode system and 90% after 2000 cycles at 20 A g −1 for assembled All-Solid-State Flexible ASCs. An in situ XRD technique was used in the three-electrode system, which showed that there was no signal of crystalline substance that affected the cyclic stability of the material while charging and discharging. These superior results prove that Ni 0.7 Co 0.3 -CMOL is a promising candidate for supercapacitor applications.

show abstract

Two-dimensional stable and ultrathin cluster-based metal–organic layers for efficient electrocatalytic water oxidation

Abstract: For electrochemical energy conversion, highly efficient and stable electrocatalysts are required, which are principally designed and synthesized by virtue of structural regulations. Two-dimensional Cluster-based Metal-Organic Layers (CMOLs) would have good...

Cited by 4 publications

References 52 publications

Activating photocatalytic hydrogen evolution by constructing Ni-based organic layers and tailoring its crystal facets

Activating photocatalytic hydrogen evolution by constructing Ni-based organic layers and tailoring its crystal facets

Self-Reconstructed Two-Dimensional Cluster-Based Co–Organic Layer Heterojunctions for Enhanced Oxygen Evolution Reactions

Highly Stable Two-Dimensional Cluster-Based Ni/Co–Organic Layers for High-Performance Supercapacitors

Contact Info

Product

Resources

About