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Related Concept Videos

Weak Acid Solutions04:02

Weak Acid Solutions

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Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...
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Ion Exchange01:17

Ion Exchange

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Anionic Chain-Growth Polymerization: Overview01:20

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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Conductometric Titrations: Strong Acid-Weak Base and Weak Acid-Strong Base Titrations01:22

Conductometric Titrations: Strong Acid-Weak Base and Weak Acid-Strong Base Titrations

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When a weak acid such as acetic acid is titrated against a strong base like sodium hydroxide, the initial conductance is relatively low due to the weak dissociation of acetic acid. However, as sodium hydroxide is added to the solution, it reacts with the acetic acid to produce highly ionized sodium acetate, which causes an increase in conductance. Once all the acetic acid has been neutralized, any additional sodium hydroxide introduces fast-moving hydroxyl ions, leading to a sharper increase in...
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Related Experiment Video

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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Solid Polymer Electrolytes Based on Functionalized Tannic Acids from Natural Resources for All-Solid-State

Jimin Shim1, Ki Yoon Bae2, Hee Joong Kim1

  • 1School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea.

Chemsuschem
|November 27, 2015
PubMed
Summary

New solid polymer electrolytes (SPEs) for lithium-ion batteries utilize natural tannic acid as a crosslinking agent and plasticizer. This approach yields dimensionally stable SPEs with enhanced ionic conductivity for improved battery performance.

Keywords:
batterieselectrolytesenergy storagepolymersrenewable resources

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Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy
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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Chemistry

Background:

  • Solid polymer electrolytes (SPEs) are crucial for developing safer all-solid-state lithium-ion batteries.
  • Traditional SPEs often face challenges with ionic conductivity and dimensional stability.
  • Utilizing bio-based materials offers a sustainable alternative for electrolyte components.

Purpose of the Study:

  • To develop novel SPEs for all-solid-state lithium-ion batteries using naturally derived components.
  • To investigate the effect of tannic acid (TA)-based crosslinking agents and plasticizers on SPE properties.
  • To achieve high ionic conductivity and dimensional stability in the synthesized SPEs.

Main Methods:

  • One-pot UV-initiated polymerization of poly(ethylene glycol) methyl ether methacrylate (PEGMA).
  • Synthesis of TA-based crosslinking agent and plasticizer from natural resources.
  • Characterization of SPEs for ionic conductivity and dimensional stability.

Main Results:

  • Achieved a high ionic conductivity of 5.6×10⁻⁴ S cm⁻¹ at room temperature.
  • Developed dimensionally stable, free-standing SPEs using minimal amounts of TA-based additives (0.1 wt% crosslinker, 2.0 wt% plasticizer).
  • Demonstrated that crosslinked SPEs exhibit ionic conductivity one order of magnitude higher than linear P(PEGMA).

Conclusions:

  • Tannic acid-derived crosslinkers and plasticizers are effective in enhancing the performance of PEGMA-based SPEs.
  • The developed SPEs show significant promise for application in all-solid-state lithium-ion batteries.
  • This study highlights the potential of sustainable, bio-based materials in advanced battery technologies.