Pyrolysis kinetics of chemically treated and torrefied radiata pine identified through thermogravimetric analysis

Safaai, Nor Sharliza Mohd; Pang, Shusheng

doi:10.1016/j.renene.2021.04.117

Cited by 19 publications

(1 citation statement)

References 63 publications

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“…In both spectra, peaks at 1375, 1772, and 1715 cm −1 can be observed, indicating the presence of imide rings. [ 27,31 ] These two unanimous spectra indicate that there are no structural changes in the PIA separator after thermal treatment. Overall, the above analysis results demonstrate the excellent thermal stability of PIA separators.…”

Section: Resultsmentioning

confidence: 99%

Novel Thermotolerant and Flexible Polyimide Aerogel Separator Achieving Advanced Lithium‐Ion Batteries

Deng

Pan

Zhang

et al. 2021

Adv Funct Materials

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Separators are vital parts of all lithium-ion batteries (LIBs), and they play a critical role in their thermal safety and electrochemical performance. Considering the low thermal stability and inferior electrolyte wettability of commercial polyolefin membranes, in this study, a novel thermotolerant polyimide aerogel (PIA) separator is designed. This is the first report on the use of chemically cross-linked PIA separators for LIBs. The outstanding porosity (78.35%) and electrolyte absorption (321.66%) of PIA separators contribute to the low internal resistance and outstanding electrochemical performance of LIBs, which can retain a high specific capacity of 118 mAh g −1 after 1000 cycles at a current density of 1 C. In addition, The LiFePO 4 |Li metal batteries with PIA separators are extremely stable at 90 °C (>300 cycles), and maintain stability even at 120 °C. More importantly, for pouch batteries, PIA separators result in higher thermal runaway temperatures compared with Celgard separators. In this paper, the pyrolysis mechanism and thermodynamic process of PIA separators are clarified by DFT calculations and in situ synchrotron vacuum UV photoionization mass spectrometry experiments.

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Section: Resultsmentioning

confidence: 99%