Thermal-stability and compressive properties of one boron nitride nanotube embedded in another carbon tube

2011 ◽  
Vol 6 (6) ◽  
pp. 444 ◽  
Author(s):  
Shen Haijun
2020 ◽  
Author(s):  
Xidong Duan ◽  
Xiaohua Shen ◽  
Jian Zhu ◽  
Liqiang Zhang ◽  
Bailing Li ◽  
...  

Abstract The widespread deployment of lithium ion (Li+) batteries with increasing energy density entails a worsening safety concern. Among many contributing factors, the typical polymer separators are plagued with poor thermal stability,limited mechanical strength and lower Li+ transference number, and are prone to catastrophic failure when subjected to local thermalor mechanical stress (e.g., pierced by lithium dendrites). Herein, we report an all-inorganicnonwoven boron nitride nanotube membrane featuring exceptional chemical stability, thermal stability, fire resistance and mechanical flexibility. The resulting membranes show superior wettability to electrolyte to endow excellent Li+ transport properties with the lowest ionic resistance and the highest Li+ transference number (0.86) when compared with all commercial separators. They can thus function as highly robust separators for Li/Li symmetriccells with ultralow overpotential (8.5 mV) and exceptional reversibility for repeated lithium plating/stripping cycles for over 8000 hours, and for practical LiFePO4/Li cell with unusually high temperature stability. Our study defines a unique class of super electrolyte-philic ceramic separators with favorable mechanical strength, thermal stability and ion transfer properties for advanced lithium batteries.


Nanoscale ◽  
2016 ◽  
Vol 8 (21) ◽  
pp. 11114-11122 ◽  
Author(s):  
Lin Jing ◽  
Roland Yingjie Tay ◽  
Hongling Li ◽  
Siu Hon Tsang ◽  
Jingfeng Huang ◽  
...  

Author(s):  
Mitesh B. Panchal ◽  
S. H. Upadhyay ◽  
S. P. Harsha

In this paper, the vibration response analysis of single walled boron nitride nanotubes (SWBNNTs) treated as thin walled tube has been done using finite element method (FEM). The resonant frequencies of fixed-free SWBNNTs have been investigated. The analysis explores the resonant frequency variations as well as the resonant frequency shift of the SWBNNTs caused by the changes in size of BNNTs in terms of length as well as the attached masses. The performance of cantilevered SWBNNT mass sensor is also analyzed based on continuum mechanics approach and compared with the published data of single walled carbon nanotube (SWCNT) for fixed-free configuration as a mass sensor. As a systematic analysis approach, the simulation results based on FEM are compared with the continuum mechanics based analytical approach and are found to be in good agreement. It is also found that the BNNT cantilever biosensor has better response and sensitivity compared to the CNT as a counterpart. Also, the results indicate that the mass sensitivity of cantilevered boron nitride nanotube nanomechanical resonators can reach 10−23 g and the mass sensitivity increases when smaller size nanomechanical resonators are used in mass sensors.


2015 ◽  
Vol 9 (5) ◽  
pp. 259-263 ◽  
Author(s):  
Sandesh Trivedi ◽  
Surinder Kumar ◽  
Satish Chand Sharma ◽  
Suraj Prakash Harsha

2015 ◽  
Vol 104 (2) ◽  
pp. 323-329 ◽  
Author(s):  
Xia Li ◽  
Xiupeng Wang ◽  
Xiangfen Jiang ◽  
Maho Yamaguchi ◽  
Atsuo Ito ◽  
...  

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