Facile synthesis of NiCo2O4-anchored reduced graphene oxide nanocomposites as efficient additives for improving the dehydrogenation behavior of lithium alanate

2020 ◽  
Vol 7 (5) ◽  
pp. 1257-1272 ◽  
Author(s):  
Yongpeng Xia ◽  
Sheng Wei ◽  
Qiang Huang ◽  
Jianquan Li ◽  
Xinghua Cen ◽  
...  

Large surface area and mesoporous structures provided by NiCo2O4@rGO nanocomposites play a synergistic role in remarkably improving the dehydrogenation properties of LiAlH4.

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70532-70536 ◽  
Author(s):  
Penghui Wang ◽  
Guoqian Lu ◽  
Huan Yan ◽  
Wei Ni ◽  
Min Xu ◽  
...  

A three-dimensional porous graphene electrode is prepared by using cellulose acetate as a template. The electrode possesses ideal porous structure and large surface area, therefore resulting in high electrosorption capacity for CDI application.


Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 256
Author(s):  
Irina V. Pushkareva ◽  
Artem S. Pushkarev ◽  
Valery N. Kalinichenko ◽  
Ratibor G. Chumakov ◽  
Maksim A. Soloviev ◽  
...  

Platinum (Pt)-based electrocatalysts supported by reduced graphene oxide (RGO) were synthesized using two different methods, namely: (i) a conventional two-step polyol process using RGO as the substrate, and (ii) a modified polyol process implicating the simultaneous reduction of a Pt nanoparticle precursor and graphene oxide (GO). The structure, morphology, and electrochemical performances of the obtained Pt/RGO catalysts were studied and compared with a reference Pt/carbon black Vulcan XC-72 (C) sample. It was shown that the Pt/RGO obtained by the optimized simultaneous reduction process had higher Pt utilization and electrochemically active surface area (EASA) values, and a better performance stability. The use of this catalyst at the cathode of a proton exchange membrane fuel cell (PEMFC) led to an increase in its maximum power density of up to 17%, and significantly enhanced its performance especially at high current densities. It is possible to conclude that the optimized synthesis procedure allows for a more uniform distribution of the Pt nanoparticles and ensures better binding of the particles to the surface of the support. The advantages of Pt/RGO synthesized in this way over conventional Pt/C are the high electrical conductivity and specific surface area provided by RGO, as well as a reduction in the percolation limit of the components of the electrocatalytic layer due to the high aspect ratio of RGO.


2018 ◽  
Vol 255 ◽  
pp. 454-462 ◽  
Author(s):  
Qin Liu ◽  
Zhiming Jiang ◽  
Yuran Tang ◽  
Xue Yang ◽  
Min Wei ◽  
...  

2017 ◽  
Vol 1 (7) ◽  
pp. 1601-1610 ◽  
Author(s):  
Haibo Su ◽  
Pengli Zhu ◽  
Leicong Zhang ◽  
Fengrui Zhou ◽  
Xianwen liang ◽  
...  

A facile and efficient method has been developed to synthesize water soluble graphene (WSG), and MSCs could be easily fabricated by direct printing using WSG-based ink.


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