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Related Concept Videos

Classification of Elements and Compounds02:54

Classification of Elements and Compounds

68.0K
Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond. Elements are classified as atomic or molecular based on the nature of their basic units.
Compounds are pure substances composed of two or more elements in fixed, definite proportions. Compounds are classified as ionic or molecular (covalent) based on the bonds...
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Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

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An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
69.0K
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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Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

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Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
42.2K
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

1.1K
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
1.1K
Ionic Crystal Structures02:42

Ionic Crystal Structures

14.7K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Li-Compound Anodes: A Classification for High-Performance Li-Ion Battery Anodes.

Ki-Hun Nam1,2, Sangmin Jeong3, Byeong-Chul Yu4

  • 1School of Materials Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177, Republic of Korea.

ACS Nano
|July 25, 2022
PubMed
Summary

Li-compound anodes offer a promising solution for high-performance lithium-ion batteries (LIBs). These novel anodes simultaneously meet key requirements like high capacity, efficiency, and stability, addressing limitations of traditional LIB anode materials.

Keywords:
Li-compound nanocompositesLi-compoundsLi-ion batteriesanode classificationanode materials

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Traditional lithium-ion battery (LIB) anodes like Li-metal, carbon, alloys, and oxides face limitations in simultaneously achieving high reversible capacity, initial Coulombic efficiency (ICE), cycle life, rate capability, structural stability, and safety.
  • Existing anode materials often present trade-offs, hindering the development of next-generation LIBs that meet all critical performance metrics.

Purpose of the Study:

  • To introduce and evaluate Li-compound anodes as a novel class of high-performance materials for LIBs.
  • To investigate the potential of specific binary and ternary Li compounds, and their nanocomposites, to overcome the limitations of conventional anode materials.

Main Methods:

  • Exploration of six Li compounds: three binary (LiSn, Li2Sb, LiBi) and three ternary (Li2ZnSb, Li5GeP3, Li5SnP3) as potential LIB anodes.
  • Selection and further modification of LiSn and Li5SnP3 into nanocomposites using solid-state synthesis with carbon sources.
  • Electrochemical performance testing of the developed Li-compound nanocomposite anodes.

Main Results:

  • The developed Li-compound nanocomposite anodes, specifically based on LiSn and Li5SnP3, demonstrated excellent electrochemical performance.
  • These nanocomposite anodes successfully satisfied all key requirements for high-performance LIB anodes, including high capacity, ICE, cycle life, and stability.
  • The study confirmed the simultaneous fulfillment of critical performance metrics, a significant advancement over existing anode technologies.

Conclusions:

  • Li-compound anodes represent a promising and innovative category for advancing LIB technology.
  • The developed nanocomposite structures offer a viable strategy to achieve superior and balanced electrochemical properties.
  • Li-compound anodes are poised to become a key component in future high-performance energy storage systems.