Metal–Organic Frameworks‐Derived Nitrogen‐Doped Porous Carbon Nanocubes with Embedded Co Nanoparticles as Efficient Sulfur Immobilizers for Room Temperature Sodium–Sulfur Batteries

Small Methods ◽  
2021 ◽  
pp. 2100455
Author(s):  
Jirong Mou ◽  
Yijuan Li ◽  
Ting Liu ◽  
Wenjia Zhang ◽  
Mei Li ◽  
...  
2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Zichao Yan ◽  
Jin Xiao ◽  
Weihong Lai ◽  
Li Wang ◽  
Florian Gebert ◽  
...  

Abstract Polysulfide dissolution and slow electrochemical kinetics of conversion reactions lead to low utilization of sulfur cathodes that inhibits further development of room-temperature sodium-sulfur batteries. Here we report a multifunctional sulfur host, NiS2 nanocrystals implanted in nitrogen-doped porous carbon nanotubes, which is rationally designed to achieve high polysulfide immobilization and conversion. Attributable to the synergetic effect of physical confinement and chemical bonding, the high electronic conductivity of the matrix, closed porous structure, and polarized additives of the multifunctional sulfur host effectively immobilize polysulfides. Significantly, the electrocatalytic behaviors of the Lewis base matrix and the NiS2 component are clearly evidenced by operando synchrotron X-ray diffraction and density functional theory with strong adsorption of polysulfides and high conversion of soluble polysulfides into insoluble Na2S2/Na2S. Thus, the as-obtained sulfur cathodes exhibit excellent performance in room-temperature Na/S batteries.


2018 ◽  
Vol 28 (38) ◽  
pp. 1707592 ◽  
Author(s):  
Ke Chen ◽  
Zhenhua Sun ◽  
Ruopian Fang ◽  
Ying Shi ◽  
Hui-Ming Cheng ◽  
...  

2016 ◽  
Vol 4 (32) ◽  
pp. 12471-12478 ◽  
Author(s):  
Yu-Ming Chen ◽  
Wenfeng Liang ◽  
Si Li ◽  
Feng Zou ◽  
Sarang M. Bhaway ◽  
...  

A nitrogen-doped carbonized metal–organic framework was utilized for room temperature sodium sulfur batteries. The cZIF-8/S composite electrode exhibited good cyclability over 250 cycles at 0.2C with a specific capacity of 500 mA h g−1.


2016 ◽  
Vol 4 (15) ◽  
pp. 5616-5622 ◽  
Author(s):  
Bingquan Xia ◽  
Teng Liu ◽  
Wei Luo ◽  
Gongzhen Cheng

Nitrogen-doped porous carbons derived from ZIF-7 annealing at different temperatures have been synthesized and used as support matrices to anchor NiPt alloy and MnOx NPs. The resulting (Ni3Pt7)0.5–(MnOx)0.5/NPC-900 exhibits superior catalytic activity with TOF values of 706 and 120 h−1 at 323 K and 298 K respectively, higher than most reported values.


2017 ◽  
Vol 5 (17) ◽  
pp. 8081-8086 ◽  
Author(s):  
Bin Qiu ◽  
Ce Yang ◽  
Wenhan Guo ◽  
Yao Xu ◽  
Zibin Liang ◽  
...  

Ultra-small Co nanoparticles embedded in hierarchically porous carbon were made in situ from metal–organic frameworks and used as catalysts in the Fischer–Tropsch synthesis.


2018 ◽  
Vol 47 (21) ◽  
pp. 7316-7326 ◽  
Author(s):  
Yuechao Yao ◽  
Peng Liu ◽  
Xiaoyan Li ◽  
Shaozhong Zeng ◽  
Tongbin Lan ◽  
...  

Herein, N-doped graphitic hierarchically porous carbon nanofibers (NGHPCF) were prepared by electrospinning the composite of bimetallic-coordination metal–organic frameworks and polyacrylonitrile, followed by a pyrolysis and acid wash process.


2018 ◽  
Vol 6 (15) ◽  
pp. 6595-6605 ◽  
Author(s):  
Jiabao Li ◽  
Jinliang Li ◽  
Dong Yan ◽  
Shujin Hou ◽  
Xingtao Xu ◽  
...  

Pomegranate-like NiS2/nitrogen-doped porous carbon hybrids were prepared from metal–organic frameworks and applied as anode materials for sodium-ion batteries.


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