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Substances that undergo either a physical or a chemical change in solution to yield ions that can conduct electricity are called electrolytes. If a substance yields ions in solution, that is, if the compound undergoes 100% dissociation, then the substance is a strong electrolyte. Complete dissociation is indicated by a single forward arrow. For example, water-soluble ionic compounds like sodium chloride dissociate into sodium cations and chloride anions in aqueous solution.
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Colligative Properties of Electrolytes
The colligative properties of a solution depend only on the number, not on the identity, of solute species dissolved. The concentration terms in the equations for various colligative properties (freezing point depression, boiling point elevation, osmotic pressure) pertain to all solute species present in the solution. Nonelectrolytes dissolve physically without dissociation or any other accompanying process. Each molecule that dissolves yields one...
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Testosterone: Functions and Regulation01:26

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The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
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Preparation and Reactions of Sulfides

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Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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Protein-protein Interfaces

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Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
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Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
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Updated: Feb 12, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Multiphase Functional Regulation of the Interface between Sulfide Solid-State Electrolyte and Nickel-Rich Cathode.

Haoyang Yuan1, Wenjun Lin2, Tao Huang2

  • 1Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, Fudan University, Shanghai 200438, China.

ACS Nano
|February 11, 2026
PubMed
Summary

Researchers developed a hybrid coating to improve stability in high-energy solid-state batteries. This coating enhances performance and longevity for nickel-rich cathodes and sulfide electrolytes, crucial for next-generation energy storage.

Keywords:
chemo-mechanical stabilitynickle-rich cathodeorganic−inorganic composite interfacespace charge layersulfide solid-state electrolyte

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Battery Technology

Background:

  • High-energy-density sulfide-based solid-state batteries require integrating nickel-rich cathodes with sulfide solid-state electrolytes.
  • Interfacial degradation between oxide cathodes and sulfide electrolytes limits battery performance.

Purpose of the Study:

  • To engineer a hybrid coating layer to address interfacial degradation between nickel-rich cathodes and sulfide solid-state electrolytes.
  • To enhance the stability and electrochemical performance of solid-state batteries.

Main Methods:

  • A hybrid coating incorporating polyvinylpyrrolidone (organic) and LixBOy (inorganic) was designed.
  • The coating was applied to polycrystalline and single-crystal nickel-rich cathodes.
  • Electrochemical performance was evaluated, including specific discharge capacity and cycle life.

Main Results:

  • The hybrid coating improved structural and chemical stability by filling surface depressions and mitigating space charge layer formation.
  • Polycrystalline cathodes achieved 174.2 mAh g-1 at 1 C and 76.8% retention after 2000 cycles at 5 C.
  • Single-crystal cathodes maintained 80% retention for up to 4778 cycles at 5 C.

Conclusions:

  • The multiphase coating paradigm effectively addresses interfacial challenges between sulfide solid-state electrolytes and nickel-rich layered oxide cathodes.
  • This approach significantly enhances the cycle life and performance of solid-state batteries.
  • The engineered hybrid coating offers a promising strategy for developing advanced energy storage solutions.