Polyoxometalate-based metal-organic frameworks for boosting electrochemical capacitor performance

Abstract Polyoxometalate-based metal-organic frameworks (POMOFs) possess promising applications as capacitors. Herein, we report the syntheses, structures and electrochemical properties of five copper-containing POMOFs: [CuI4H2(btx)5(PW12O40)2]·2H2O (1), [CuIICuI3(H2O)2(btx)5(PWVI10WV2O40)]·2H2O (2), [CuI6(btx)6(PWVI9WV3O40)]·2H2O (3), [CuI4H2(btx)5(PMo12O40)2]·2H2O (4) and [CuIICuI3(btx)5(SiMoVI11MoVO40)]·4H2O (5) (btx = 1,4-bis(triazol-1-ylmethyl) benzene) with potential applications as capacitors. Compounds 1–3 contain the same Keggin-type polyoxometalate (POM) although with different oxidation states, allowing the analysis of the effect of the electronic population on the capacitance pe…

Polyoxometalate Metal–Organic Frameworks: Keggin Clusters Encapsulated into Silver-Triazole Nanocages and Open Frameworks with Supercapacitor Performance

To investigate the relationship between the structures of polyoxometalate host–guest materials and their energy-storage performance, three novel polyoxometalate-based metal–organic compounds, [Ag10...

A Facile Strategy to Create Electrocatalysts of Highly Dispersive Ni–Mo Sulfide Nanosheets on Graphene by Derivation of Polyoxometalate Coordination Polymer for Advanced H2 Evolution

A High‐Capacity Negative Electrode for Asymmetric Supercapacitors Based on a PMo 12 Coordination Polymer with Novel Water‐Assisted Proton Channels

The development of a negative electrode for supercapacitors is a critical challenge for the next-generation of energy-storage devices. Herein, two new electrodes formed by the coordination polymers [Ni(itmb)4 (HPMo12 O40 )]·2H2 O (1) and [Zn(itmb)3 (H2 O)(HPMo12 O40 )]·4H2 O (2) (itmb = 1-(imidazo-1-ly)-4-(1,2,4-triazol-1-ylmethyl)benzene), synthesized by a simple hydrothermal method, are described. Compounds 1 and 2 show high capacitances of 477.9 and 890.2 F g-1 , respectively. An asymmetric supercapacitor device assembled using 2 which has novel water-assisted proton channels as negative electrode and active carbon as positive electrode shows ultrahigh energy density and power density of…

CCDC 1835308: Experimental Crystal Structure Determination

Related Article: Guangning Wang, Tingting Chen, Carlos J. Gómez-García, Feng Zhang, Mingyi Zhang, Huiyuan Ma, Haijun Pang, Xinming Wang, and Lichao Tan|2020|Small|16|8|doi:10.1002/smll.202001626

CCDC 1851193: Experimental Crystal Structure Determination

Related Article: Yan Hou, Haijun Pang, Carlos J. Gómez-García, Huiyuan Ma, Xinming Wang, Lichao Tan|2019|Inorg.Chem.|58|16028|doi:10.1021/acs.inorgchem.9b02516

CCDC 1851423: Experimental Crystal Structure Determination

Related Article: Yan Hou, Haijun Pang, Carlos J. Gómez-García, Huiyuan Ma, Xinming Wang, Lichao Tan|2019|Inorg.Chem.|58|16028|doi:10.1021/acs.inorgchem.9b02516