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Polyoxometalate-Based Metal–Organic Frameworks with Conductive Polypyrrole for Supercapacitors
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-09-03 00:00:00 , DOI: 10.1021/acsami.8b12194 Hai-Ning Wang 1, 2 , Mi Zhang 2 , A-Man Zhang 2 , Feng-Cui Shen 2 , Xiao-Kun Wang 2 , Sheng-Nan Sun 2 , Yong-Jun Chen 2 , Ya-Qian Lan 2
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-09-03 00:00:00 , DOI: 10.1021/acsami.8b12194 Hai-Ning Wang 1, 2 , Mi Zhang 2 , A-Man Zhang 2 , Feng-Cui Shen 2 , Xiao-Kun Wang 2 , Sheng-Nan Sun 2 , Yong-Jun Chen 2 , Ya-Qian Lan 2
Affiliation
Metal–organic frameworks (MOFs) with high porosity could act as an ideal substitute for supercapacitors, but their poor electrical conductivities limit their electrochemical performances. In order to overcome this problem, conductive polypyrrole (PPy) has been introduced and a novel nanocomposite resulting from polyoxometalate (POM)-based MOFs (NENU-5) and PPy has been reported. It comprises the merits of POMs, MOFs, and PPy. Finally, the highly conductive PPy covering the surfaces of NENU-5 nanocrystallines can effectively improve the electron/ion transfer among NENU-5 nanocrystallines. The optimized NENU-5/PPy nanocomposite (the volume of Py is 0.15 mL) exhibits high specific capacitance (5147 mF·cm–2), larger than that of pristine NENU-5 (432 mF·cm–2). Furthermore, a symmetric supercapacitor device based on a NENU-5/PPy-0.15 nanocomposite possesses an excellent areal capacitance of 1879 mF·cm–2, which is far above other MOF-based supercapacitors.
中文翻译:
导电性聚吡咯的基于多金属氧酸盐的金属有机骨架,用于超级电容器
高孔隙率的金属有机骨架(MOF)可以替代超级电容器,但其导电性差会限制其电化学性能。为了克服该问题,已经引入了导电聚吡咯(PPy),并且已经报道了由基于多金属氧酸盐(POM)的MOF(NENU-5)和PPy产生的新型纳米复合材料。它包括POM,MOF和PPy的优点。最后,覆盖NENU-5纳米晶体表面的高导电PPy可有效改善NENU-5纳米晶体之间的电子/离子转移。优化的NENU-5 / PPy纳米复合材料(Py的体积为0.15 mL)显示出高的比电容(5147 mF·cm –2),大于原始的NENU-5(432 mF·cm –2))。此外,基于NENU-5 / PPy-0.15纳米复合材料的对称超级电容器器件具有1879 mF·cm -2的极佳面积电容,远高于其他基于MOF的超级电容器。
更新日期:2018-09-03
中文翻译:
导电性聚吡咯的基于多金属氧酸盐的金属有机骨架,用于超级电容器
高孔隙率的金属有机骨架(MOF)可以替代超级电容器,但其导电性差会限制其电化学性能。为了克服该问题,已经引入了导电聚吡咯(PPy),并且已经报道了由基于多金属氧酸盐(POM)的MOF(NENU-5)和PPy产生的新型纳米复合材料。它包括POM,MOF和PPy的优点。最后,覆盖NENU-5纳米晶体表面的高导电PPy可有效改善NENU-5纳米晶体之间的电子/离子转移。优化的NENU-5 / PPy纳米复合材料(Py的体积为0.15 mL)显示出高的比电容(5147 mF·cm –2),大于原始的NENU-5(432 mF·cm –2))。此外,基于NENU-5 / PPy-0.15纳米复合材料的对称超级电容器器件具有1879 mF·cm -2的极佳面积电容,远高于其他基于MOF的超级电容器。