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Related Concept Videos

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Heterogeneous Catalysis01:22

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Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
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The Electrical Double Layer01:30

The Electrical Double Layer

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In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
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Voltaic/Galvanic Cells02:47

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Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
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Electrochemical Systems01:24

Electrochemical Systems

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Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution,...
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DC Battery01:21

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A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
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Related Experiment Video

Updated: Apr 23, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Chemical heterogeneity for battery materials.

Chenglong Zhao1, Xia Zhang2,3, Zhou Jin4

  • 1Shenzhen Key Lab of Energy Materials for Carbon Neutrality, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.

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Chemical heterogeneity in battery materials enhances electrochemical performance and stability. This review explores how atomic- to phase-level variations unlock new strategies for advanced rechargeable battery development.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Next-generation rechargeable batteries need advanced materials with improved electrochemical capabilities.
  • Understanding complex material interactions (composition, structure, performance) is crucial but challenging.
  • Mitigating degradation in alkali-metal-deficient frameworks due to cycling stress remains a key limitation.

Purpose of the Study:

  • To explore the significance of chemical heterogeneity in rechargeable battery materials.
  • To discuss how heterogeneity at various scales enhances electrochemical properties.
  • To outline strategies for developing future battery materials.

Main Methods:

  • Review of existing research on chemical heterogeneity in battery materials.
  • Analysis of how atomic-scale, nano-domain, and phase-segregated heterogeneity impacts performance.
  • Discussion of principles and mechanisms underlying heterogeneity benefits.

Main Results:

  • Chemical heterogeneity, from atomic to phase-segregated levels, enhances battery material properties.
  • Heterogeneous materials exhibit improved structural stability, ion conductivity, and redox activity.
  • Heterogeneity offers a pathway beyond homogeneous counterparts for superior electrochemical performance.

Conclusions:

  • Chemical heterogeneity is a critical factor for advancing rechargeable battery technology.
  • Harnessing heterogeneity principles can lead to materials with enhanced stability and performance.
  • Further research is needed to address challenges and develop future heterogeneous battery materials.