Performance enhancement of a graphene–sulfur composite as a lithium–sulfur battery electrode by coating with an ultrathin Al2O3 film via atomic layer deposition

2014 ◽  
Vol 2 (20) ◽  
pp. 7360 ◽  
Author(s):  
Mingpeng Yu ◽  
Wenjing Yuan ◽  
Chun Li ◽  
Jong-Dal Hong ◽  
Gaoquan Shi
2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Hui Zhang ◽  
Luis K. Ono ◽  
Guoqing Tong ◽  
Yuqiang Liu ◽  
Yabing Qi

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.


2020 ◽  
Vol 26 ◽  
pp. 513-533 ◽  
Author(s):  
Jun Zhang ◽  
Gaixia Zhang ◽  
Zhangsen Chen ◽  
Hongliu Dai ◽  
Qingmin Hu ◽  
...  

Nanoscale ◽  
2015 ◽  
Vol 7 (12) ◽  
pp. 5292-5298 ◽  
Author(s):  
Mingpeng Yu ◽  
Aiji Wang ◽  
Fuyang Tian ◽  
Hongquan Song ◽  
Yinshu Wang ◽  
...  

2021 ◽  
pp. 151419
Author(s):  
Bin Wei ◽  
Huimin Chen ◽  
Wenqiang Hua ◽  
Minyu Chen ◽  
Xingwei Ding ◽  
...  

2019 ◽  
Vol 7 (12) ◽  
pp. 1900621
Author(s):  
Chulgi Nathan Hong ◽  
Daniel Kyungbin Kye ◽  
Anil U. Mane ◽  
Jeffrey W. Elam ◽  
Vinodkumar Etacheri ◽  
...  

2017 ◽  
Vol 9 (8) ◽  
pp. 7185-7192 ◽  
Author(s):  
Rachel Carter ◽  
Landon Oakes ◽  
Nitin Muralidharan ◽  
Adam P. Cohn ◽  
Anna Douglas ◽  
...  

2005 ◽  
Vol 483-485 ◽  
pp. 701-704 ◽  
Author(s):  
Maciej Wolborski ◽  
Mietek Bakowski ◽  
Viljami Pore ◽  
Mikko Ritala ◽  
Markku Leskelä ◽  
...  

Aluminium oxide and titanium oxide films were deposited using the Atomic Layer Deposition method on n-type 4H SiC and p-type Si {001} substrates, with doping 6×1015cm-3 and 2×1016cm-3, respectively, and on 1.2 kV PiN 4H SiC diodes for passivation studies. The Al2O3 and SiC interface was characterised for the existence of an effective negative charge with a density of 1×1012-2×1012 cm-2. The dielectric constant of Al2O3 as determined from capacitance-voltage data was about 8.3. The maximum electric field supported by the Al2O3 film was up to 7.5 MV/cm and 8.4 MV/cm on SiC and Si, respectively.


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