• Title/Summary/Keyword: Electrolytes

Search Result 1,068, Processing Time 0.025 seconds

Spark Plasma Sintering Technique and Application for All-Solid-State Batteries (전고상 전지를 위한 스파크 플라스마 소결 기술과 응용)

  • Lee, Seokhee
    • Ceramist
    • /
    • v.22 no.2
    • /
    • pp.170-181
    • /
    • 2019
  • All-solid-state batteries have received increasing attention because of their high safety aspect and high energy and power densities. However, the inferior solid-solid interfaces between solid electrolyte and active materials in electrode, which cause high interfacial resistance, reduce ion and electron transfer rate and limit battery performance. Recently, spark plasma sintering is emerging as a promising technique for fabricating solid electrolytes and composite-electrodes. Herein, this paper focuses on the overview of spark plasma sintering to fabricate solid electrolytes and composite-electrodes for all-solid-state batteries. In the end, future opportunities and challenges associated with SPS technique for all-solid-state batteries are described.

Electrostatic Adsorption of Uniformly Charged Electrolytes within Like-charged Electrodes

  • Jang, Seanea;Shin, Ghi Ryang;Kim, Soon-Chul
    • Journal of the Korean Physical Society
    • /
    • v.73 no.9
    • /
    • pp.1315-1323
    • /
    • 2018
  • The classical-fluids density functional theory has been developed for studying the structural and the electrical properties of electrolyte solutions containing uniformly charged hard-spherical ions. The modified fundamental-measure theory has been used to evaluate the hard-sphere contribution. The mean-field approximation has been employed to calculate the cross correlation between the hard sphere contribution and the Coulomb interaction. The Poisson equation for ions carrying charges that are spatially separated has been solved. The present theory shows reasonably good agreement with the corresponding Monte Carlo simulation results. The calculated results show that the attraction between like-charged planar surfaces is the result of the intra-ionic correlation and depends strongly on the ion size, valence, mole fraction, and charge distribution of electrolytes.

Review of interface engineering for high-performance all-solid-state batteries (계면 제어를 기반으로 한 고성능 전고체 전지 연구)

  • Insu, Hwang;Hyeon Jeong, Lee
    • Journal of Industrial Technology
    • /
    • v.42 no.1
    • /
    • pp.19-27
    • /
    • 2022
  • This review will discuss the effort to understand the interfacial reactions at the anode and cathode sides of all-solid-state batteries. Antiperovskite solid electrolytes have received increasing attention due to their low melting points and anion tunability which allow controlling microstructure and crystallographic structures of this material system. Antiperovskite solid electrolytes pave the way for the understanding relationship between critical current density and mechanical properties of solid electrolytes. Microstructure engineering of cathode materials has been introduced to mitigate the volume change of cathode materials in solid-state batteries. The hollow microstructure coupled with a robust outer oxide layer effectively mitigates both volume change and stress level of cathode materials induced by lithium insertion and extraction, thus improving the structural stability of the cathode and outer oxide layer, which results in stable cycling performance of all-solid-state batteries.

The Absorption of Water from the Isolated Small Intestine of the Rat (흰쥐의 적출소장을 통한 물의 흡수에 관한 연구)

  • Kim, Chong-Kook;Lee, Bum-Jin
    • YAKHAK HOEJI
    • /
    • v.32 no.3
    • /
    • pp.194-197
    • /
    • 1988
  • We measured the rate of water transfer across the isolated small intestine of the rat in Wiseman apparatus using tritiated water ($^3H_2O$) in drinking beverages such as electrolytes solution, fruit juice, carbonated water and barley water. Initial transfer rate of water using four beverages were determined: Electrolytes solution is the fastest and followed by barley water, carbonated water and fruit juice.

  • PDF

Effects of the Addition of Water-soluble Polymers on Silk Dyeing (수용성 고분자를 이용한 견의 염색)

  • 황은경;김문식;이동수
    • Journal of Sericultural and Entomological Science
    • /
    • v.40 no.2
    • /
    • pp.136-142
    • /
    • 1998
  • The low-pollution dyeing condition and dyeing method suitable for the silk fiber were investigated. Instead of surfactants, water-soluble polymers and electrolytes were added as auxiliary agents in the new process of dyeing. By the new method, the level dyeing and sufficient exhaustion were achieved. The K/S values of silk fabrics were little different among electrolytes added in the dye-bath.

  • PDF

Characterization of Porous Poly(vinylidene fluoride)/Poly(ethylene carbonate) Membranes for Polymer Electrolytes of Lithium Secondary Batteries (리튬 이차전지 고분자 전해질용 다공성 Poly(vinylidene fluoride)/Poly(ethylene carbonate) 막의 특성 연구)

  • Jeon, Jae-Deok;Kwak, Seung-Yeop
    • Proceedings of the Membrane Society of Korea Conference
    • /
    • 2004.05b
    • /
    • pp.69-72
    • /
    • 2004
  • So far the most practical polymer electrolytes are gel systems, which contain a polymeric matrix, a lithium salt, and aprotic organic solvents. This has met with success but has had disadvantages that the addition of solvents promotes deterioration of the electrolyte's mechanical properties and increases its reactivity towards the lithium metal anode.[1](omitted)

  • PDF

Effect of Polygonum cuspidatum on renal function

  • Kang, Kyung-Min;Kim, Hyun-Jung;Joo, Si-Mong;Yang, Ki-Sook
    • Proceedings of the PSK Conference
    • /
    • 2003.04a
    • /
    • pp.269.1-269.1
    • /
    • 2003
  • Polygonum cuspidatum has been used as treatments of dermatitis, inflammation, hyperlipidemia and diuretics in folk remedies. In order to evaluate the urinary effect of Polygoni cuspidati Radix, its MeOH extract was administerd in rats. We determined the total urin volume, chemical parameters(urea nitrogen, creatinine, uric acid), electrolytes(natrium, potassium, chloride) ) in serum and urin. Polygoni cuspidati Radix showed increase in urin volume and electrolytes.

  • PDF

Electrodeposition from Non-Aqueous Electrolytes (비수용액성 전해액에서의 전기도금)

  • Brooman, Eric W.
    • Journal of the Korean institute of surface engineering
    • /
    • v.24 no.3
    • /
    • pp.169-176
    • /
    • 1991
  • The pros and cons of deposition metals, alloys and compounds from organic, inorganic and molten salt non-aqueous plating baths are discussed. Although some metals, alloys and compounds not obtainable otherwise can be deposited, few commercial processes exist. Widespread use is limited by the cost, complexity, and hazards associated with non-aqueous electrolytes, coupled with the relatively small markets for many of these coatings.

  • PDF