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Cross-Linked Sulfonated Poly(arylene ether nitrile)s with Low Swelling and High Proton Conductivity
Jingchun Liu,Penglun Zheng,Mengna Feng,Renbo Wei,Xiaobo Liu 한국고분자학회 2017 Macromolecular Research Vol.25 No.12
A series of cross-linked composite membranes were prepared from sulfonated poly (arylene ether nitrile) (SPEN) and 2, 5-diaminobenzensulfonic acid (DABSA) via a direct cross-linking method aiming to obtain low-swelling and excellent proton conductivity membrane. This experiment had two advantages: expectant low-swelling in the extreme temperatureand excellent proton conductivity. Besides, all cross-linked membranes showed excellent thermal stability which exhibiting a temperature of initial decomposition about 250 °C. The membranes showed the IEC values varying from 1.449 to 1.675 mmol·g-1. The result suggested that the SPEN-DABSA membranes are potential candidates as PEM in DMFCs.
Energy Storage of Polyarylene Ether Nitriles at High Temperature
Xiaohe Tang,Yong You,Hua Mao,Kui Li,Renbo Wei,Xiaobo Liu 대한금속·재료학회 2018 ELECTRONIC MATERIALS LETTERS Vol.14 No.4
Polyarylene ether nitrile (PEN) was synthesized and used as film capacitors for energy storage at high temperature. Scanningelectron microscopy observation indicated that the films of PEN have pinholes at nanoscales which restricted the energystorage properties of the material. The pinhole shadowing effect through which the energy storage properties of PEN wereeffectively improved to be 2.3 J/cm3 was observed by using the overlapped film of PEN. The high glass transition temperature(Tg) of PEN was as high as 216 °C and PEN film showed stable dielectric constant, breakdown strength and energy storagedensity before the Tg. The PEN films will be a potential candidate as high performance electronic storage materials used athigh temperature.