Investigation of non-woven carbon paper as a current collector for sulfur positive electrode—Understanding of the mechanism and potential applications for Li/S batteries

2016 ◽  
Vol 211 ◽  
pp. 697-703 ◽  
Author(s):  
S. Waluś ◽  
C. Barchasz ◽  
R. Bouchet ◽  
J.-F. Martin ◽  
J.-C. Leprêtre ◽  
...  
2017 ◽  
Vol 164 (2) ◽  
pp. A355-A359 ◽  
Author(s):  
Seongki Ahn ◽  
Moongook Jeong ◽  
Koki Miyamoto ◽  
Tokihiko Yokoshima ◽  
Hiroki Nara ◽  
...  

2005 ◽  
Vol 486-487 ◽  
pp. 650-653 ◽  
Author(s):  
Gyu Bong Cho ◽  
Sang Sik Jeong ◽  
Soo Moon Park ◽  
Tae Hyun Nam

A 49.8 at.%Ti-50.2 at.%Ni shape memory alloy was applied to a current collector of positive electrode for lithium/sulfur (Li/S) battery. Flexible austenitic phase having pseudoelasticity dominated in the Ti-Ni current collector at room temperature. In the discharge curve, two plateau regions due to the lithium polysulfide (Li2Sn) and the lithium sulfide (Li2S) were obviously observed. The initial discharge capacity was 1068 mAh/g for Li/S cell with the Al current collector, and that of the cell with the Ti-Ni current collector reached 1140 mAh/g. A little bit of declined cycle performance was associated with decreased sulfur utilization owing to a reaction with dissolved Ti and Ni elements. Compared with the Al current collector used commercially, the Ti-Ni alloy with pseudoelasticity was more suitable to apply for the current collector of Li/S battery.


2020 ◽  
Vol 31 (12) ◽  
pp. 9242-9249
Author(s):  
Jingyi Zou ◽  
Xiaogang Sun ◽  
Rui Li ◽  
Qiang He

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3198 ◽  
Author(s):  
Minfeng Chen ◽  
Weijun Zhou ◽  
Jizhang Chen ◽  
Junling Xu

Wood has unique advantages. However, the rigid structure and intrinsic insulating nature of wood limit its applications. Herein, a two-step process is developed to render wood veneers conductive and flexible. In the first step, most of the lignin and hemicellulose in the wood veneer are removed by hydrothermal treatment. In the second step, electroless Ni plating and subsequent pressing are carried out. The obtained Ni-plated veneer is flexible and bendable, and has a high tensile strength of 21.9 and 4.4 MPa along and across the channel direction, respectively, the former of which is considerably higher than that of carbon cloth and graphene foam. Moreover, this product exhibits high electrical conductivity around 1.1 × 103 S m−1, which is comparable to that of carbon cloth and graphene foam, and significantly outperforms previously reported wood-based conductors. This work reveals an effective strategy to transform cheap and renewable wood into a high value-added product that rivals expensive carbon cloth and graphene foam. The obtained product is particularly promising as a current collector for flexible and wearable electrochemical energy storage devices such as supercapacitors and Li-ion batteries.


Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 955
Author(s):  
Yean-Der Kuan ◽  
Ting-Ru Ke ◽  
Jyun-Long Lyu ◽  
Min-Feng Sung ◽  
Jing-Shan Do

This paper constructs planar-type graphene thin film current collectors for proton exchange membrane fuel cells (PEMFCs). The present planar-type current collector adopts FR-4 as the substrate and coats a copper thin film using thermal evaporation for the electric-conduction layer. A graphene thin film is then coated onto the current collector to prevent corrosion due to electrochemical reactions. Three different coating techniques are conducted and compared: Spin coating, RF magnetron sputtering, and screen printing. The corrosion rates and surface resistances are tested and compared for the different coating techniques. Single cell PEMFCs with the developed current collectors are assembled and tested. A PEMFC module with two cells is also designed and constructed. The cell performances are measured to investigate the device feasibility.


Nano Select ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Chaoran Yang ◽  
Lanlan Yang ◽  
Zhigang Chai ◽  
Xiang Zheng ◽  
Jianming Li ◽  
...  

2018 ◽  
Vol 398 ◽  
pp. 193-200 ◽  
Author(s):  
Chang Uk Jeong ◽  
Sung-Yun Lee ◽  
Jihoon Kim ◽  
Kuk Young Cho ◽  
Sukeun Yoon

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