摘要：Membranes with high ion conductivity and selectivity are important for vanadium redox flow ***, densely quaternized anion exchange membranes based on quaternary ammonium functionalized octa-benzylmethyl-containing poly(fluorenyl ether ketone)s(QA-OMPFEKs) were prepared from the(i) condensation polymerization of a newly developed octa-benzylmethyl-containing bisphenol monomer via Ullmann coupling,(ii) bromination at the benzylmethyl sites using N-bromosuccinimide, and(iii)quaternization of the bromomethyl groups using trimethylamine. The QA-OMPFEK-20 with an ion exchange capacity(IEC) of 1.66 mmolg^-1 exhibited a higher SO42-conductivity(9.62mScm^-1) than that of the QA-TMPFEK-40(4.82mScm^-1) at room temperature, which had a slightly higher IEC of 1.73 mmolg-1but much lower QA *** enhanced SO42-conductivity of QA-OMPFEK-20 was attributed to the ion-segregated structure arising from the densely anchored QA groups, which was validated by SAXS observation. Furthermore, the QA-OMPFEK-20 showed much lower VO2+permeability(1.24×10^-14m^2s^-1) than QA-TMPFEK-40(5.40×10^-13m^2s^-1) and Nafion N212(5.36×10^-12m^2s^-1), leading to improved Coulombic and energy efficiencies in Vanadium redox flow batteries(VRFBs). Therefore, the Ullmann coupling extension is a valuable approach for the development of high performance anion exchange membranes for VRFBs.

摘要：基于云技术的建筑能耗管理方案,改善了建筑能耗管理方法,很好地解决了建筑能耗的本地管理、远程运维管理与平台维护。基于此,讨论了云技术在建筑能耗管理中应用的可行性,阐述了设计建筑能耗管理系统的实现途径。

摘要：泡沫炭是一种开孔相连的轻质炭材料,其最大的特点是多样性和可设计性,具有成为新一代功能材料、结构材料的潜力。以美国橡树岭实验室所制备的泡沫炭为主线,综述了制备泡沫炭的主要方法及其性能,并展望了泡沫炭的应用。

摘要：利用GIS技术将建筑的空间信息与非空间信息综合在一起进行能耗分析,探讨以单位面积人均能耗作为建筑能耗性能指标的可行性。