The Potential for the Creation of a High Areal Capacity Lithium-Sulfur Battery Using a Metal Foam Current Collector

Site-selective sulfur infiltration into a hierarchical carbon nanotube material overcomes limitations in processing high areal capacity sulfur battery cathodes.

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Mesoporous Carbon–Carbon Nanotube–Sulfur Composite Microspheres for High-Areal-Capacity Lithium–Sulfur Battery Cathodes

ACS Applied Materials & Interfaces ◽

10.1021/am4035784 ◽

2013 ◽

Vol 5 (21) ◽

pp. 11355-11362 ◽

Cited By ~ 193

Author(s):

Terrence Xu ◽

Jiangxuan Song ◽

Mikhail L. Gordin ◽

Hiesang Sohn ◽

Zhaoxin Yu ◽

...

Keyword(s):

Carbon Nanotube ◽

Mesoporous Carbon ◽

Lithium Sulfur Battery ◽

Composite Microspheres ◽

Sulfur Battery ◽

Areal Capacity ◽

Lithium Sulfur

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

10.20944/preprints201901.0072.v1 ◽

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.

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Free-Standing Porous Carbon Nanofiber/Carbon Nanotube Film as Sulfur Immobilizer with High Areal Capacity for Lithium–Sulfur Battery

ACS Applied Materials & Interfaces ◽

10.1021/acsami.8b00190 ◽

2018 ◽

Vol 10 (10) ◽

pp. 8749-8757 ◽

Cited By ~ 66

Author(s):

Ye-Zheng Zhang ◽

Ze Zhang ◽

Sheng Liu ◽

Guo-Ran Li ◽

Xue-Ping Gao

Keyword(s):

Carbon Nanotube ◽

Porous Carbon ◽

Carbon Nanofiber ◽

Free Standing ◽

Lithium Sulfur Battery ◽

Carbon Nanotube Film ◽

Porous Carbon Nanofiber ◽

Sulfur Battery ◽

Areal Capacity ◽

Lithium Sulfur

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Long-life lithium-sulfur batteries with high areal capacity based on coaxial CNTs@TiN-TiO2 sponge

Nature Communications ◽

10.1038/s41467-021-24976-y ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Hui Zhang ◽

Luis K. Ono ◽

Guoqing Tong ◽

Yuqiang Liu ◽

Yabing Qi

Keyword(s):

Rational Design ◽

Specific Capacity ◽

Three Dimensional ◽

Atomic Layer ◽

Catalyst System ◽

Lithium Sulfur Battery ◽

Layer Deposition ◽

Sulfur Battery ◽

Areal Capacity ◽

Lithium Sulfur

AbstractRational design of heterostructures opens up new opportunities as an ideal catalyst system for lithium polysulfides conversion in lithium-sulfur battery. However, its traditional fabrication process is complex, which makes it difficult to reasonably control the content and distribution of each component. In this work, to rationally design the heterostructure, the atomic layer deposition is utilized to hybridize the TiO2-TiN heterostructure with the three-dimensional carbon nanotube sponge. Through optimizing the deposited thickness of TiO2 and TiN layers and adopting the annealing post-treatment, the derived coaxial sponge with uniform TiN-TiO2 heterostructure exhibits the best catalytic ability. The corresponding lithium-sulfur battery shows enhanced electrochemical performance with high specific capacity of 1289 mAh g−1 at 1 C and capacity retention of 85% after 500 cycles at 2 C. Furthermore, benefiting from the highly porous structure and interconnected conductive pathways from the sponge, its areal capacity reaches up to 21.5 mAh cm−2.

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