Recent progress in core–shell structural materials towards high performance batteries

Zhu, Rongmei; Jiang, Yuxuan; Song, Yongzhen; Liu, Limei; Xu, Yuanhang; Pang, Huan

doi:10.1016/j.cej.2024.151681

Cited by 5 publications

(3 citation statements)

References 221 publications

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“…In recent years, hollow structures have attracted increasing research interest for a wide range of applications owing to their unique structures and inherent physical and chemical properties. − Metal-organic frameworks (MOFs) show great performance advantages in various applications. − Etching causes MOFs more defects, which can facilitate the doping of heteroatoms into MOFs, resulting in improved performance. , To date, there are different types of structures after etching MOF, such as core–shell structure − and nanosheet structure. − However, the selective directional etching of MOFs is rarely studied.…”

Section: Introductionmentioning

confidence: 99%

Hf-Doped CoP Hollow Nanocubes as High-Performance Electrocatalyst for Oxygen Evolution Reaction

Zhu,

Xie,

Zhang

et al. 2024

Inorg. Chem.

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Designing and synthesizing hollow frame structures with unique three-dimensional open structures in electrocatalysis remain a challenge. Etching is an effective method to synthesize metal-organic frameworks (MOFs) with a hollow structure and rich function. Herein, we report the design and synthesis of Hf-doped CoP hollow nanocubes by selective etching and ion exchange. Different from the traditional etching method, we used acid xylenol orange solution to etch typically the (211) crystal face of ZIF-67, obtaining the unique bell-like structure, named XO-ZIF-67. Subsequently, Hf-doped CoP hollow nanocubes were formed by Hf 4+ doping and simple phosphating treatment. Electrochemical tests showed that the overpotential of the obtained catalyst is only 291 mV at the current density of 10 mA cm −2 when applied in catalyzing the oxygen evolution reaction (OER). Furthermore, the catalyst shows excellent stability when running in 1 M KOH solution for 25 h.

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Section: Introductionmentioning

confidence: 99%

Hf-Doped CoP Hollow Nanocubes as High-Performance Electrocatalyst for Oxygen Evolution Reaction

Zhu,

Xie,

Zhang

et al. 2024

Inorg. Chem.

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Section: ■ Introductionmentioning

confidence: 99%

“…For the sustainable development of future energy, electrocatalytic energy conversion technology has attracted much attention to solving the problem of depleted fossil fuels and problems related to the polluted environment. , Hydrogen has been considered an ideal energy due to its exciting characteristics, such as high energy density (ca. 282 kJ mol –1 ) and zero carbon emission when utilized. − Among the many routes to produce hydrogen, electrochemical water splitting powered by renewable energies possesses many advantages regarding sustainable energy development and environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

Crystalline-to-Amorphous Transformation and Charge Redistribution Induced by Anion–Cation Double Substitution on 3D Ni(OH)₂ Ultrathin Nanosheet Arrays Enable Urea-Assisted Energy-Saving Hydrogen Production

Le,

Ngo

et al. 2024

ACS Sustainable Chem. Eng.

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Amorphous catalysts possess substantially better catalytic activity toward water splitting than their crystalline counterparts. However, researchers have thus far focused on the crystalline rather than the amorphous phase due to the complexity of synthesis and characterization. Here, crystalline-to-amorphous transformation and charge redistribution induced by Fe and F double substitution on 3D Ni(OH) 2 ultrathin nanosheet arrays are reported as a highly active and stable bifunctional electrocatalyst for urea-assisted water electrolysis. It is unveiled that the synergistic effect of F and Fe dopant incorporation not only alters the electronic configuration for improved intrinsic activity but also creates abundant active sites rich in Ni 3+ , which are responsible for significantly accelerated reaction kinetics. First, our findings show that the collected F−Fe−Ni(OH) 2 catalyst exhibits excellent urea oxidation reaction (UOR) activity with an overpotential of 1.42 V to generate 250 mA cm −2 . Then, the as-prepared catalyst can play a dual role in a whole cell test, presenting a cell voltage of 1.68 V, which is 140 mV lower than that in the overall water-splitting system at 200 mA cm −2 . This work contributes a novel approach to synthesizing Ni-based materials for bifunctional electrocatalysts with enhancement of the catalytic activities of the UOR and the hydrogen evolution reaction.

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Bio‐Inspired Core–Shell Structured Electrode Particles with Protective Mechanisms for Lithium‐Ion Batteries

Song,

Dong,

Chen

et al. 2024

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Lithium‐ion batteries (LIBs), as predominant energy storage devices, are applied to electric vehicles, which is an effective way to achieve carbon neutrality. However, the major obstructions to their applications are two dilemmas: enhanced cyclic life and thermal stability. Taking advantage of bio‐inspired core–shell structures to optimize the self‐protective mechanisms of the mercantile electrode particles, LIBs can improve electrochemical performance and thermal stability simultaneously. The favorable core–shell structures suppress volume expansion to stabilize electrode–electrolyte interfaces (EEIs), mitigate direct contact between the electrode material and electrolyte, and promote electrical connectivity. They possess wide operating temperatures, high‐voltage resistance, and inhibit short circuits. During cycling, the cathode and anode generate a cathode–electrolyte interface (CEI) and a solid–electrolyte interface (SEI), respectively. Applying multitudinous coating approaches can generate multifarious bio‐inspired core–shell structured electrode particles, which is helpful for the generation of the EEIs, self‐healing the surface cracks, and maintaining the structural integrities of electrodes. The protected shells act as barriers to minimize unwanted side reactions and enhance thermal stability. These in‐depth understandings of the bio‐inspired evolution for electrode particles can inspire further enhancements in LIB lifetime and thermal safety, especially for bio‐inspired core–shell structured electrodes possessing high‐performance protective mechanisms.

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Recent progress in core–shell structural materials towards high performance batteries

Cited by 5 publications

References 221 publications

Hf-Doped CoP Hollow Nanocubes as High-Performance Electrocatalyst for Oxygen Evolution Reaction

Hf-Doped CoP Hollow Nanocubes as High-Performance Electrocatalyst for Oxygen Evolution Reaction

Crystalline-to-Amorphous Transformation and Charge Redistribution Induced by Anion–Cation Double Substitution on 3D Ni(OH)₂ Ultrathin Nanosheet Arrays Enable Urea-Assisted Energy-Saving Hydrogen Production

Bio‐Inspired Core–Shell Structured Electrode Particles with Protective Mechanisms for Lithium‐Ion Batteries

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Recent progress in core–shell structural materials towards high performance batteries

Cited by 5 publications

References 221 publications

Hf-Doped CoP Hollow Nanocubes as High-Performance Electrocatalyst for Oxygen Evolution Reaction

Hf-Doped CoP Hollow Nanocubes as High-Performance Electrocatalyst for Oxygen Evolution Reaction

Crystalline-to-Amorphous Transformation and Charge Redistribution Induced by Anion–Cation Double Substitution on 3D Ni(OH)2 Ultrathin Nanosheet Arrays Enable Urea-Assisted Energy-Saving Hydrogen Production

Bio‐Inspired Core–Shell Structured Electrode Particles with Protective Mechanisms for Lithium‐Ion Batteries

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Product

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Crystalline-to-Amorphous Transformation and Charge Redistribution Induced by Anion–Cation Double Substitution on 3D Ni(OH)₂ Ultrathin Nanosheet Arrays Enable Urea-Assisted Energy-Saving Hydrogen Production