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Related Concept Videos

Catalysis02:50

Catalysis

31.0K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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Colloidal precipitates01:09

Colloidal precipitates

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The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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Mitigating Reaction Barriers in Ni-Rich Cathodes via Surface-Bulk Coupling Strategy for Fast-Charging.

Yingjie Sun1, Xudong Li1, Peng Gao1

  • 1Department of Applied Chemistry, Harbin Institute of Technology at Weihai, Weihai, China.

Small (Weinheim an Der Bergstrasse, Germany)
|February 24, 2026
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Summary

Researchers developed a new method to stabilize nickel-rich layered oxide cathodes, improving battery performance and durability. This approach combines bulk structural stabilization with in situ interphase formation for enhanced fast-charging batteries.

Keywords:
bifunctional coupling designhigh‐rate Ni‐rich cathodesin situ self‐formed interphasemechano‐electrochemical stability

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Battery Technology

Background:

  • Material degradation, especially mechanical, in layered oxide cathodes is a significant challenge.
  • Previous surface-only or bulk-only modifications have not fully resolved these intrinsic issues.
  • Combined surface-bulk strategies are complex, costly, and difficult to scale.

Purpose of the Study:

  • To develop a practical and scalable strategy for durable high-nickel cathodes.
  • To couple bulk structural stabilization with in situ formation of a conductive interphase.
  • To enhance electrochemical stability and reaction kinetics in layered oxide cathodes.

Main Methods:

  • Design of a novel material structure for Ni-rich layered oxides.
  • In situ formation of a fast conductive interphase.
  • Coupling bulk structural stabilization with surface modification.

Main Results:

  • Achieved a robust bulk framework and a stable surface with accelerated kinetics.
  • Demonstrated high-rate capability (>160 mAh g-1 at 5 C) and stable cycling (>200 cycles).
  • Provided atomic-scale insights into structural evolution, ionic transport, and electrochemical stability.

Conclusions:

  • The dual approach offers a practical pathway to durable high-nickel cathodes.
  • This strategy enables fast-charging battery applications.
  • Understanding the interplay between structure, transport, and stability is key for future battery development.