scholarly journals Highly flexible, freestanding tandem sulfur cathodes for foldable Li–S batteries with a high areal capacity

2017 ◽  
Vol 4 (2) ◽  
pp. 249-258 ◽  
Author(s):  
Chi-Hao Chang ◽  
Sheng-Heng Chung ◽  
Arumugam Manthiram
Keyword(s):  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Areal Capacity ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Highly flexible tandem cathodes with a high sulfur loading achieve foldable lithium–sulfur batteries with a high areal capacity.

Flexible freestanding sandwich-structured sulfur cathode with superior performance for lithium–sulfur batteries

2014 ◽  
Vol 2 (23) ◽  
pp. 8623-8627 ◽  
Author(s):  
Jiangxuan Song ◽  
Zhaoxin Yu ◽  
Terrence Xu ◽  
Shuru Chen ◽  
Hiesang Sohn ◽  
...  
Keyword(s):  
Rate Capability ◽  
Cycling Stability ◽  
Superior Performance ◽  
Sulfur Cathode ◽  
Lithium Sulfur Batteries ◽  
Excellent Cycling Stability ◽  
Sulfur Cathodes ◽  
Areal Capacity ◽  
Lithium Sulfur

Flexible freestanding sandwich-structured sulfur cathodes are developed for lithium–sulfur batteries, which exhibit excellent cycling stability and rate capability. A high areal capacity of ∼4 mA h cm−2 is also demonstrated based on this new cathode configuration.

Gel based sulfur cathodes with a high sulfur content and large mass loading for high-performance lithium–sulfur batteries

2017 ◽  
Vol 5 (4) ◽  
pp. 1650-1657 ◽  
Author(s):  
Shiqi Li ◽  
Tong Mou ◽  
Guofeng Ren ◽  
Juliusz Warzywoda ◽  
Zidong Wei ◽  
...  
Keyword(s):  
Sulfur Content ◽  
High Performance ◽  
Large Mass ◽  
Mass Loading ◽  
Sulfur Cathode ◽  
High Sulfur Content ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur ◽  
High Sulfur Loading

A bacterial cellulose based carbon nanoribbon aerogel was employed for a gel-based sulfur cathode, simultaneously achieving both a high sulfur content (90%) and a high sulfur loading (6.4 mg cm−2) with a large capacity of 943 mA h g−1or 5.9 mA h cm−2.

scholarly journals Free-standing and binder-free highly N-doped carbon/sulfur cathodes with tailorable loading for high-areal-capacity lithium–sulfur batteries

2015 ◽  
Vol 3 (41) ◽  
pp. 20482-20486 ◽  
Author(s):  
A. Schneider ◽  
C. Suchomski ◽  
H. Sommer ◽  
J. Janek ◽  
T. Brezesinski
Keyword(s):  
High Loading ◽  
Carbon Paper ◽  
Free Standing ◽  
Lithium Sulfur Batteries ◽  
Binder Free ◽  
Sulfur Host ◽  
Sulfur Cathodes ◽  
Areal Capacity ◽  
Lithium Sulfur

A practical high-loading Li–S battery is realized by using free-standing and highly conductive N-doped carbon paper as sulfur host.

scholarly journals Electroconductive Additives for High-Rate Capability of High-Areal-Capacity Lithium–Sulfur Batteries Using Metal-Foam Current Collector

2019 ◽  
Author(s):  
Hiroki Nara ◽  
Tokihiko Yokoshima ◽  
Hitoshi Mikuriya ◽  
Shingo Tsuda ◽  
Tetsuya Osaka
Keyword(s):  
Energy Density ◽  
Aluminum Foam ◽  
Metal Foam ◽  
Rate Capability ◽  
Current Collector ◽  
High Rate ◽  
Lithium Sulfur Batteries ◽  
Areal Capacity ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Various types of electroconductive additives were evaluated for high C-rate capability in an attempt to extend practical application of high-areal-capacity lithium–sulfur batteries that employ an aluminum-foam current collector. Carbon nanofibers (CNFs) were found to be the most effective additive, with the ability to attain a high-sulfur-loading of 40 mg cm−2. A CNF-containing cell exhibited gravimetric capacities of 1094 and 758 mAh gsulfur−1 (46.8 and 32.4 mAh cm−2) at 0.05 and 0.1 C-rate, respectively, in an ether-based electrolyte. Because a CNF-containing slurry exhibits low viscosity even at a high solid ratio, it could be filled into the aluminum foam. Additionally, a lithium–sulfur battery with high-sulfur-loading had an energy density of ~120 Wh kg−1, a value that was calculated from the weight of the components of the cathode, anode, current collectors, electrolyte, and separator. Assuming that the amount of electrolyte decreases and that the energy density of cells accumulate, a theoretical energy density of 522 Wh kg−1 was estimated. Moreover, it was found that even if a high-areal-capacity was achieved, the discharge capacity converged at a high C-rate, unless there was an improvement in ion diffusion in the bulk electrolyte. This is considered a limitation of sulfur cathodes with high-sulfur-loading.

Printed microelectrodes for scalable, high-areal-capacity lithium–sulfur batteries

2016 ◽  
Vol 52 (23) ◽  
pp. 4282-4285 ◽  
Author(s):  
Craig Milroy ◽  
Arumugam Manthiram
Keyword(s):  
High Precision ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Areal Capacity ◽  
Lithium Sulfur

Freestanding, printed microelectrodes for lithium–sulfur cathodes with high areal capacity are produced with a high-precision dispenser.

Integrating hierarchical porous nanosheets in the design of carbon cloth-based sandwiched sulfur cathodes to achieve high areal capacity in lithium sulfur batteries

2020 ◽  
Vol 4 (7) ◽  
pp. 3293-3299
Author(s):  
Yu Fu ◽  
Kui Cheng ◽  
Jing Hu ◽  
Limin Zhou
Keyword(s):  
Carbon Fiber ◽  
Fiber Surface ◽  
Carbon Cloth ◽  
Porous Nanosheets ◽  
Hierarchical Porous ◽  
Lithium Sulfur Batteries ◽  
Carbon Fiber Surface ◽  
Sulfur Cathodes ◽  
Areal Capacity ◽  
Lithium Sulfur

Due to Co3O4 nanosheets grown on carbon fiber surface and within inter-fiber spaces (as shown in the graph), sulfur cathodes integrating the modified carbon cloth (CC@pCo3O4) demonstrate a superior areal capacity than most of previously reported CC-based sulfur cathodes.

Root-like porous carbon nanofibers with high sulfur loading enabling superior areal capacity of lithium sulfur batteries

Carbon ◽  
2018 ◽  
Vol 128 ◽  
pp. 138-146 ◽  
Author(s):  
Xiaohui Zhao ◽  
Miso Kim ◽  
Ying Liu ◽  
Hyo-Jun Ahn ◽  
Ki-Won Kim ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Porous Carbon ◽  
Lithium Sulfur Batteries ◽  
Areal Capacity ◽  
Lithium Sulfur ◽  
High Sulfur Loading

A conductive and ordered macroporous structure design of titanium oxide-based catalytic cathode for lithium-sulfur batteries

2021 ◽  
Author(s):  
Fan Liu ◽  
Yani Guan ◽  
Xiaohang Du ◽  
Guihua Liu ◽  
Daolai Sun ◽  
...  
Keyword(s):  
Active Site ◽  
Structure Design ◽  
Doped Tio2 ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Ordered Macroporous ◽  
Kinetics Of ◽  
Areal Capacity ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Abstract The application of lithium-sulfur (Li-S) batteries is hindered by the insulating characteristic of sulfur and slow reaction kinetics of lithium polysulfides. Here, we propose a three-dimensionally ordered macroporous (3DOM) structured conductive polar Ta-doped TiO2 framework with supported Co active site (CoTa@TiO2)to enhance the conversion kinetics of polysulfides. The 3DOM structure serves as an efficient sulfur host for the active sulfur through abundant pores and adsorption site. At the same time, the macropores can buffer the volume expansion of sulfur and enlarged mass transfer. The strong electrostatic attraction between Ti-O bond and polysulfide also promotes the adsorption of polysulfides. Moreover, the doped-Ta improves the conductivity of TiO2 by narrowing the band gap, whereas the supported Co can accelerate the catalytic transformation. Benefited from advanced structural designandsynergistic effect of Co and Ta doped TiO2, the Li-S cell with 3DOM CoTa@TiO2 cathode exhibits an impressive areal capacity of 3.4 mAh cm-2 under a high sulfur loading of 5.1 mg cm-2. This work provides an alternative strategy for the development of carbon-based cathode materials for lithium-sulfur batteries.

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