Effect of soluble sulfur species on the electrochemical behavior of lithium–sulfur batteries with dual-phase electrolytes

2019 ◽  
Vol 3 (8) ◽  
pp. 1966-1970 ◽  
Author(s):  
Chengcheng Zhao ◽  
Hao Yang ◽  
Xiaofei Wang ◽  
Huilan Li ◽  
Chu Qi ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Reaction Kinetics ◽  
Electrochemical Behavior ◽  
Charge Transfer Resistance ◽  
Dual Phase ◽  
Transfer Resistance ◽  
Sulfur Species ◽  
Lithium Sulfur Batteries ◽  
Interfacial Charge ◽  
Lithium Sulfur

We report a Li–S system with dual-phase electrolytes by taking advantage of the highly soluble lithium polysulfides (Li2Sn, 2 < n ≤ 8), and it shows an improved reaction kinetics associated with a low interfacial charge transfer resistance.

Increasing Electrical Conductivity of Free-Standing Sulfurized Polyacrylonitrile Cathode for Lithium–Sulfur Batteries

2020 ◽  
Vol 12 (10) ◽  
pp. 1441-1445
Author(s):  
Huihun Kim ◽  
Seon-Hwa Choe ◽  
Milan K. Sadan ◽  
Changhyeon Kim ◽  
Kwon-Koo Cho ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Specific Capacity ◽  
Rate Capability ◽  
Charge Transfer Resistance ◽  
Acetylene Black ◽  
Free Standing ◽  
Transfer Resistance ◽  
Lithium Sulfur Batteries ◽  
Multi Walled Carbon Nanotubes ◽  
Lithium Sulfur

Sulfurized polyacrylonitrile (S-PAN) is one of the best materials for addressing some of the intrinsic drawbacks of lithium–sulfur batteries, such as the intrinsic insulating properties of sulfur and the shuttle phenomenon. Moreover, while S-PAN nanofiber composites are flexible, they still presents shortcomings, such as low rate capability, which is due to their semiconductor electrical conductivity. In this study, we prepared S-PAN webs with high electrical conductivity via electrospinning using conducting agents. Additionally, we analyzed the electrochemical properties of the S-PAN webs prepared using various conducting agents (acetylene black, Ketjen black, and multi-walled carbon nanotubes). The specific capacity of the S-PAN web prepared using acetylene black was 740 mAh g–1 at the charge rate of 5 C. The excellent rate capability of S-PAN prepared using acetylene black was attributed to its low electrical resistance and low charge transfer resistance.

scholarly journals Electrochemical Characterization of a New Biodegradable FeMnSi Alloy Coated with Hydroxyapatite-Zirconia by PLD Technique

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Nicanor Cimpoeşu ◽  
Lucia Carmen Trincă ◽  
Georgiana Dascălu ◽  
Sergiu Stanciu ◽  
Silviu Octavian Gurlui ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Electrochemical Behavior ◽  
Electrochemical Impedance ◽  
Corrosion Current ◽  
Charge Transfer Resistance ◽  
Transfer Resistance ◽  
Zero Current ◽  
Capacitive Effect ◽  
Current Potential

Biodegradable alloys are very attractive biomaterials. Electrochemical impedance spectroscopy (EIS) and linear potentiodynamic polarization (LPP) techniques were used for the study of the electrochemical behavior of uncoated FeMnSi and coated FeMnSi with hydroxyapatite + zirconia (HA-ZrO2) through pulsed laser deposition (PLD) technique. Experiments were carried out using Hank’s balanced salt solution (HBSS). It has been shown that in HBSS the impedance for uncoated FeMnSi was mainly characterized by one capacitive effect, which related to the alloy charge transfer control. The charge transfer resistance increases for HA-ZrO2-coated FeMnSi alloy. The equivalent circuits simulating the electrochemical behavior of both uncoated and HA-ZrO2-coated FeMnSi alloys in HBSS were proposed. From LPP the corrosion resistance was evaluated by means of the zero current potential (ZCP) and corrosion current density (jcorr). The surface morphology of both uncoated and HA-coated FeMnSi alloys in HBSS obtained after LPP was studied using scanning electron microscopy (SEM).

A surfactant-assisted strategy to tailor Li-ion charge transfer interfacial resistance for scalable all-solid-state Li batteries

2018 ◽  
Vol 2 (10) ◽  
pp. 2165-2170 ◽  
Author(s):  
Chengtian Zhou ◽  
Alfred Junio Samson ◽  
Kyle Hofstetter ◽  
Venkataraman Thangadurai
Keyword(s):  
Charge Transfer ◽  
Simple Technique ◽  
Charge Transfer Resistance ◽  
Lithium Metal ◽  
Interfacial Resistance ◽  
Transfer Resistance ◽  
Metal Anode ◽  
Lithium Metal Anode ◽  
Li Ion ◽  
Interfacial Charge

An economical and simple technique to mitigate the solid electrolyte–lithium metal anode interfacial charge transfer resistance.

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