Melanin’s Semiconductor Nature and His Polymer Structure Successfully Modifies Sulfur Cathode and Increases Efficiency on Li-S Batteries

2021 ◽  
Vol 105 (1) ◽  
pp. 209-217
Author(s):  
Yuliya Polishchuk ◽  
Elena Shembel ◽  
Volodymyr Kyrychenko ◽  
Andrea Strakova Fedorkova ◽  
Volodymyr Redko ◽  
...  
Keyword(s):  
Polymer Structure ◽  
Liquid Electrolyte ◽  
Rechargeable Batteries ◽  
Impedance Spectra ◽  
Sulfur Cathode ◽  
Electrochemical Parameters ◽  
Different Types

Dynamics of change in impedance spectra and electrochemical parameters of the Li-S rechargeable batteries with non-aqueous liquid electrolyte 0.7 M LiIm, 0.25 M LiNO3, DME: DOL (2:1) during storage after assembly and cycling have been shown. For modification of the Sulfur cathode, we used the different types of melanin. Our results confirm that melanin can be used as a promising component of sulfur-based electrodes

The Research of Electrolyte on Lithium/Sulfur Battery

2012 ◽  
Vol 476-478 ◽  
pp. 1763-1766 ◽  
Author(s):  
Ming Sen Zheng ◽  
Jia Jia Chen ◽  
Quan Feng Dong
Keyword(s):  
Room Temperature ◽  
Liquid Electrolyte ◽  
Cycle Performance ◽  
Sulfur Cathode ◽  
Lithium Sulfur Battery ◽  
Profound Influence ◽  
Electrolyte Component ◽  
Discharging Capacity ◽  
Sulfur Battery ◽  
Lithium Sulfur

The suitability of some different kinds of liquid electrolytes with a 1M solution of LiCF3SO3 was evaluated for discharging capacity and cycle performance of Li/S cells at room temperature. The liquid electrolyte component was found to have a profound influence on the discharging capacity and cycle property. The lithium–sulfur battery based on the alcohol-ether binary electrolyte shows two discernible voltage plateaus at around 2.4 and 2.1 V, which correspond to the formation of soluble polysulfides and of solid reduction products, respectively. However, the liquid electrolyte based on carbonate electrolyte shows a bad compatibility with sulfur cathode. The lithium sulfur battery can not deliver acceptable discharging capacity and cycle performances.

Improved dischargeability and reversibility of sulfur cathode in a novel ionic liquid electrolyte

2006 ◽  
Vol 8 (4) ◽  
pp. 610-614 ◽  
Author(s):  
L.X. Yuan ◽  
J.K. Feng ◽  
X.P. Ai ◽  
Y.L. Cao ◽  
S.L. Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Electrolyte ◽  
Sulfur Cathode ◽  
Ionic Liquid Electrolyte

scholarly journals Functional membrane separators for next-generation high-energy rechargeable batteries

2017 ◽  
Vol 4 (6) ◽  
pp. 917-933 ◽  
Author(s):  
Yuede Pan ◽  
Shulei Chou ◽  
Hua Kun Liu ◽  
Shi Xue Dou
Keyword(s):  
Room Temperature ◽  
Final Section ◽  
High Energy ◽  
Liquid Electrolyte ◽  
Rechargeable Batteries ◽  
Next Generation ◽  
Selective Permeability ◽  
Alternative Approach ◽  
Functional Membrane ◽  
Specific Species

Abstract The membrane separator is a key component in a liquid-electrolyte battery for electrically separating the cathode and the anode, meanwhile ensuring ionic transport between them. Besides these basic requirements, endowing the separator with specific beneficial functions is now being paid great attention because it provides an important alternative approach for the development of batteries, particularly next-generation high-energy rechargeable batteries. Herein, functional separators are overviewed based on four key criteria of next-generation high-energy rechargeable batteries: stable, safe, smart and sustainable (4S). That is, the applied membrane materials and the corresponding functioning mechanisms of the 4S separators are reviewed. Functional separators with selective permeability have been applied to retard unwanted migration of the specific species (e.g. polysulfide anions in Li-S batteries) from one electrode to the other in order to achieve stable cycling operation. The covered battery types are Li-S, room-temperature Na-S, Li-organic, organic redox-flow (RF) and Li-air batteries. Safe, smart and sustainable separators are then described in sequence following the first criterion of stable cycling. In the final section, key challenges and potential opportunities in the development of 4S separators are discussed.

Charge–Discharge Behavior of Bismuth in a Liquid Electrolyte for Rechargeable Batteries Based on a Fluoride Shuttle

2017 ◽  
Vol 2 (6) ◽  
pp. 1460-1464 ◽  
Author(s):  
Ken-ichi Okazaki ◽  
Yoshiharu Uchimoto ◽  
Takeshi Abe ◽  
Zempachi Ogumi
Keyword(s):  
Liquid Electrolyte ◽  
Rechargeable Batteries ◽  
Discharge Behavior ◽  
Charge Discharge

scholarly journals Separators and electrolytes for rechargeable batteries: Fundamentals and perspectives

2018 ◽  
Vol 4 (4) ◽  
Author(s):  
Tina Nestler ◽  
Elsa Roedern ◽  
Nikolai F. Uvarov ◽  
Juliane Hanzig ◽  
Giuseppe Antonio Elia ◽  
...  
Keyword(s):  
Solid Electrolytes ◽  
Electrode Materials ◽  
Liquid Electrolyte ◽  
Rechargeable Batteries ◽  
Electrochemical Cells ◽  
Safe Alternative ◽  
Basic Principles ◽  
Push Forward ◽  
Li Ion ◽  
Composite Solid

Abstract Separators and electrolytes provide electronic blockage and ion permeability between the electrodes in electrochemical cells. Nowadays, their performance and cost is often even more crucial to the commercial use of common and future electrochemical cells than the chosen electrode materials. Hence, at the present, many efforts are directed towards finding safe and reliable solid electrolytes or liquid electrolyte/separator combinations. With this comprehensive review, the reader is provided with recent approaches on this field and the fundamental knowledge that can be helpful to understand and push forward the developments of new electrolytes for rechargeable batteries. After presenting different types of separators as well as the main hurdles that are associated with them, this work focuses on promising material classes and concepts for next-generation batteries. First, chemical and crystallographic concepts and models for the description and improvement of the ionic conductivity of bulk and composite solid electrolytes are outlined. To demonstrate recent perspectives, research highlights have been included in this work: magnesium borohydride-based complexes for solid-state Mg batteries as well as all-in-one rechargeable SrTiO3 single-crystal energy storage. Furthermore, ionic liquids pose a promising safe alternative for future battery cells. An overview on their basic principles and use is given, demonstrating their applicability for Li-ion systems as well as for so-called post-Li chemistries, such as Mg- and Al-ion batteries.

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