http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Synthesis and Properties of Self-healing Metallopolymers with 5-Vinyltetrazole Units and Zn(II)
Mifa Chen,Wenxiang Wang,Hou Chen,Liangjiu Bai,Zhongxin Xue,Donglei Wei,Huawei Yang,Yuzhong Niu 한국고분자학회 2019 Macromolecular Research Vol.27 No.1
The development of reversible and efficient self-healing materials symbolizes an emerging and challenging task in intelligent materials science. In this paper, a facile one-pot and two-step methodology was developed for the preparation of polyacrylonitrile-r-poly(butyl acrylate) (PAN-r-PnBA) and its subsequent modification. Zinc chloride (ZnCl2) was used as a catalyst to modify cyano groups and generate tetrazole groups of PAN-r-PnBA. Simultaneously, ZnCl2 effectively coordinates with the generated tetrazole group for highly self-healing performance. It was demonstrated that the metallopolymers (MPs) exhibited excellent self-healing properties at ambient temperature. The prepared tetrazole-based MPs can be used as a wide range of self-healing materials.
Li Qiqi,Zhang Yingnan,Song Ya,Yang Huawei,Yang Lixia,Bai Liangjiu,Wei Donglei,Wang Wenxiang,Liang Ying,Chen Hou 한국탄소학회 2023 Carbon Letters Vol.33 No.2
Biomass carbon materials with high rate capacity have great potential to boost supercapacitors with cost effective, fast charging–discharging performance and high safety requirements, yet currently suffers from a lack of targeted preparation methods. Here we propose a facile FeCl3 assisted hydrothermal carbonization strategy to prepare ultra-high rate biomass carbon from apple residues (ARs). In the preparation process, ARs were first hydrothermally carbonized into a porous precursor which embedded by Fe species, and then synchronously graphitized and activated to form biocarbon with a large special surface area (2159.3 m2 g−1) and high degree of graphitization. The material exhibited a considerable specific capacitance of 297.5 F g−1 at 0.5 A g−1 and outstanding capacitance retention of 85.7% at 10 A g−1 in 6 M KOH, and moreover, achieved an energy density of 16.2 Wh kg−1 with the power density of 350.3 W kg−1. After 8000 cycles, an initial capacitance of 95.2% was maintained. Our findings provide a new idea for boosting the rate capacity of carbon-based electrode materials.