Front Cover: Hollow Structure VS<sub>2</sub>@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance (ChemElectroChem 1/2020)

Qi, Haimei; Wang, Lina; Zuo, Tiantian; Deng, Shunlan; Li, Qi; Liu, Zong–Huai; Hu, Peng; He, Xuexia

doi:10.1002/celc.201901959

ChemElectroChem

2019

DOI: 10.1002/celc.201901959

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Front Cover: Hollow Structure VS₂@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance (ChemElectroChem 1/2020)

Haimei Qi

Lina Wang

Tiantian Zuo

et al.

Abstract: The Front Cover shows the synthesis of VS2 hollow flower spheres and its conductive composite materials. It could provide an important new synthetic avenue for future battery and renewable energy applications. More information can be found in the Article by H. Qi et al. on page 78 in Issue 1, 2020 (DOI: 10.1002/celc.201901626).

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Multiple Active Sites Carbonaceous Anodes for Na⁺ Storage: Synthesis, Electrochemical Properties and Reaction Mechanism Analysis

Shin

et al. 2020

Adv Funct Materials

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Owing to the earth‐abundant resources, cost effective materials and stable electrochemical properties, sodium‐ions batteries (SIBs) show long‐term potential in responding to the rapid consumption of lithium resources and the ever‐increasing development of new energy storage devices. Nevertheless, the intrinsic properties of the large ion radius (Na+ 1.02 Å vs Li+ 0.76 Å) and positive reduction potential (Na/Na+ −2.71 V vs Li/Li+ −3.04 V) may impede ion diffusion, thus causing serious volume expansion, resulting in poor cycling stability. To address these issues, the incorporation of active sites into carbonaceous anode is considered as an efficient strategy to enhance interfacial compatibility, enlarge interlayer distance, and supply reversible Faradic pseudo‐capacitance. Herein, the multiple active sites carbonaceous anodes for SIBs anode are comprehensively reviewed. Typically, carbonaceous materials are categorized into diffusion and surface controlled based on Na storage mechanism, and the concepts of intrinsic/extrinsic active sites are proposed according to the types of active sites. Furthermore, to reveal the reaction kinetics and guide the rational design of high performance anodes, the (spectro) electrochemical analysis methods and corresponding key parameters are introduced. Additionally, primary superiorities, essential issues, and supposed solutions of multiple active sites carbonaceous Na anodes are discussed and the future development directions are also proposed. This review may provide new design thoughts for high performance carbonaceous Na storage anodes.

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Multiple Active Sites Carbonaceous Anodes for Na⁺ Storage: Synthesis, Electrochemical Properties and Reaction Mechanism Analysis

Shin

et al. 2020

Adv Funct Materials

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Design and Synthesis of Ag‐based Catalysts for Electrochemical CO₂ Reduction: Advances and Perspectives

Huang

Yang³

et al. 2022

Chemistry An Asian Journal

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Ag‐based nanocrystals have emerged as an important candidate for CO2 reduction reaction (CO2RR) owing to the increasing amount of CO2 in the atmosphere, which has shown a propensity to alleviate environmental problems and produce high value‐added chemicals. This paper reviews the surface and interface engineering of Ag‐based catalysts towards CO2RR, which involve in the morphology control, composition manipulation, and support effects. Various synthesis approaches are presented to discuss their influence on the size, crystal structure and morphology of Ag‐based catalysts, including pure Ag NPs, Ag‐based alloys, Ag/metal oxides composites as well as Ag/carbon materials. Next, the development of Ag‐based surface and interface engineering that is essential to accelerate the formation of CO and its further conversion to C1 or even multicarbon products is systematically discussed. Finally, we give a short conclusion, and perspectives on the rational design of Ag‐based catalysts based on surface and interface engineering will be discussed.

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Cation Decorated Ferric Oxide with a Polyhedral‐like Structure for the Electrocatalytic Nitrogen Reduction Reaction

et al. 2021

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Considerable efforts have been devoted to electrocatalytic reaction of N 2 to NH 3 driven by the broad demand of ammonia and the disadvantages of the Haber-Bosch process. Unfortunately, the difficult adsorption of nitrogen molecules and the permanent dipole of N�N vastly inhibit its practical application. Historically, the ferric oxide (Fe 2 O 3 ) has inferior nitrogen reduction reaction (NRR) activity among transition compounds due to the unfavorable band gap and scarce active center. Considering the fact that the electronic properties and morphology character could be well-tuned brought by the incorporation of heteroatoms, we report vanadium atom decorated ferric oxide (named as V-α-Fe 2 O 3 ) with a polyhedrallike structure as an innovative catalyst for fast nitrogen reduction reaction. Benefiting from the incorporation of vanadium atoms, the electronic structure and active center of α-Fe 2 O 3 were well-optimized, with enhanced NRR activity being obtained. The as-synthesized 17 % V-α-Fe 2 O 3 exhibits excellent catalytic activity that the Faradaic efficiency is 5.7 % and the NH 3 yield is 68.7 μg h À 1 mg À 1 cat. at À 0.2 V (vs. RHE) in 0.1 M HCl. This work reported an approach to synthesize the enhanced catalysts even realizing the efficient application of NRR in the near future.

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Front Cover: Hollow Structure VS₂@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance (ChemElectroChem 1/2020)

Cited by 20 publications

References 0 publications

Multiple Active Sites Carbonaceous Anodes for Na⁺ Storage: Synthesis, Electrochemical Properties and Reaction Mechanism Analysis

Multiple Active Sites Carbonaceous Anodes for Na⁺ Storage: Synthesis, Electrochemical Properties and Reaction Mechanism Analysis

Design and Synthesis of Ag‐based Catalysts for Electrochemical CO₂ Reduction: Advances and Perspectives

Cation Decorated Ferric Oxide with a Polyhedral‐like Structure for the Electrocatalytic Nitrogen Reduction Reaction

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Front Cover: Hollow Structure VS2@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance (ChemElectroChem 1/2020)

Cited by 20 publications

References 0 publications

Multiple Active Sites Carbonaceous Anodes for Na+ Storage: Synthesis, Electrochemical Properties and Reaction Mechanism Analysis

Multiple Active Sites Carbonaceous Anodes for Na+ Storage: Synthesis, Electrochemical Properties and Reaction Mechanism Analysis

Design and Synthesis of Ag‐based Catalysts for Electrochemical CO2 Reduction: Advances and Perspectives

Cation Decorated Ferric Oxide with a Polyhedral‐like Structure for the Electrocatalytic Nitrogen Reduction Reaction

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Product

Resources

About

Front Cover: Hollow Structure VS₂@Reduced Graphene Oxide (RGO) Architecture for Enhanced Sodium‐Ion Battery Performance (ChemElectroChem 1/2020)

Multiple Active Sites Carbonaceous Anodes for Na⁺ Storage: Synthesis, Electrochemical Properties and Reaction Mechanism Analysis

Multiple Active Sites Carbonaceous Anodes for Na⁺ Storage: Synthesis, Electrochemical Properties and Reaction Mechanism Analysis

Design and Synthesis of Ag‐based Catalysts for Electrochemical CO₂ Reduction: Advances and Perspectives