Rational Surface Engineering of MXene@N-doping Hollow Carbon Dual-confined Cobalt Sulfides/Selenides for Advanced Aluminum Batteries

Author(s):  
Long Yao ◽  
Shunlong Ju ◽  
Xuebin Yu

Rechargeable aluminum batteries (RABs) based on multivalent ions transfer have attracted great attention due to their large specific capacities, natural abundance, and high safety of metallic Al anode. However, the...

2020 ◽  
Vol 381 ◽  
pp. 122593 ◽  
Author(s):  
Shuaijun Wang ◽  
Hongfei Zhao ◽  
Xiaoli Zhao ◽  
Jinqiang Zhang ◽  
Zhimin Ao ◽  
...  

2018 ◽  
Vol 9 (1) ◽  
pp. 1803035 ◽  
Author(s):  
Peng Ge ◽  
Sijie Li ◽  
Laiqiang Xu ◽  
Kangyu Zou ◽  
Xu Gao ◽  
...  

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5416
Author(s):  
Cheng Chang ◽  
Maria Ibáñez

Thermoelectric materials enable the direct conversion between heat and electricity. SnTe is a promising candidate due to its high charge transport performance. Here, we prepared SnTe nanocomposites by employing an aqueous method to synthetize SnTe nanoparticles (NP), followed by a unique surface treatment prior NP consolidation. This synthetic approach allowed optimizing the charge and phonon transport synergistically. The novelty of this strategy was the use of a soluble PbS molecular complex prepared using a thiol-amine solvent mixture that upon blending is adsorbed on the SnTe NP surface. Upon consolidation with spark plasma sintering, SnTe-PbS nanocomposite is formed. The presence of PbS complexes significantly compensates for the Sn vacancy and increases the average grain size of the nanocomposite, thus improving the carrier mobility. Moreover, lattice thermal conductivity is also reduced by the Pb and S-induced mass and strain fluctuation. As a result, an enhanced ZT of ca. 0.8 is reached at 873 K. Our finding provides a novel strategy to conduct rational surface treatment on NP-based thermoelectrics.


Langmuir ◽  
2019 ◽  
Vol 35 (40) ◽  
pp. 12889-12897 ◽  
Author(s):  
Fei Xu ◽  
Baichuan Ding ◽  
Yuqian Qiu ◽  
Jianping Wu ◽  
Zeruizhi Cheng ◽  
...  

2021 ◽  
Author(s):  
Pooja Rana ◽  
Ranjana Dixit ◽  
Shivani Sharma ◽  
Sriparna Dutta ◽  
Sneha Yadav ◽  
...  

Abstract Tuning the scturtrual architecture of the pristine two dimensional hexagonal boron nitride (h-BN) nanosheets through rational surface engineering can prove advantageous in the fabrication of competent catalytic materials. Inspired by the performance of h-BN based nanomaterials in expediting key organic transformations, we channelized our research efforts towards engineering the inherent surface properties of the exclusively stacked h-BN through the incorporation of a novel competent copper complex of a bidentate chelating ligand 2-hydroxy-4-methoxybenzophenone. Delightfully, this hybrid nanomaterial worked exceptionally well in boosting the [3+2] cycloaddition reaction of azide and nitriles, providing a facile access to a diverse variety of highly bioactive tetrazole motifs. A deep insight into the morphology of the covalently crafted h-BN signified the structural integrity of the exfoliated h-BN@OH nanosheets that exhibited lamellar like structures possessing smooth edges and flat surface. This interesting morphology could also be envisioned to augment the catalysis by allowing the desired surface area for the reactants and thus tailoring their activity. The work paves the way towards rational design of h-BN based nanomaterials and adjusting their catalytic potential by the use of suitable complexes for promoting sustainable catalysis, especially in view of the fact that till date only a very few h-BN nanosheets based catalysts have been devised.


2018 ◽  
Vol 8 (16) ◽  
pp. 1800068 ◽  
Author(s):  
Yu Jiang ◽  
Xuefeng Zhou ◽  
Dongjun Li ◽  
Xiaolong Cheng ◽  
Fanfan Liu ◽  
...  

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