JP-7855507-B2 - Metal-organic structures for supercapacitor electrodes

Inventors

• ディンカ， ミルチャ
• ドウ， ジンフー
• ボリシェヴィチ， ミハル
• パレンティ， リッカルド
• バンダ， ハリシュ

Assignees

• マサチューセッツ インスティテュート オブ テクノロジー
• オートモビリ ランボルギーニ ソチエタ ペル アツイオニ

Dates

Publication Date

20260508

Application Date

20200929

Priority Date

20190930

Claims (8)

1. A metal-organic structure for use as a supercapacitor electrode material , wherein the metal-organic structure comprises a plurality of metal ions coordinated to a plurality of ligands, The aforementioned metal ions include nickel ions, cobalt ions, iron ions, platinum ions, and/or palladium ions. The plurality of ligands include ligands containing two or more sulfur donor atoms, The metal ion is coordinated to the ligand containing the two or more sulfur donor atoms by the two or more sulfur donor atoms, The aforementioned metal-organic structure has the following structure: It has the following characteristics, where M is a metal ion : The metal-organic structure comprises a plurality of two-dimensional sheets having an average spacing greater than or equal to 0.3 nm and less than or equal to 0.5 nm. The metal-organic structure includes a plurality of pores having an average pore diameter greater than or equal to 0.3 nm and less than or equal to 1 nm. Metal-organic structures.
2. The metal-organic structure according to claim 1, wherein M is a nickel ion.
3. The metal-organic structure according to claim 1 or 2, wherein the metal-organic structure has a two-dimensional structure.
4. The metal-organic structure according to any one of claims 1 to 3 , wherein the interaction energy between the plurality of two-dimensional sheets is less than the bond strength within the plurality of two-dimensional sheets.
5. The metal-organic structure according to any one of claims 1 to 4 , wherein the two-dimensional sheets are aligned with one another.
6. The metal-organic structure according to any one of claims 1 to 5 , wherein the average spacing between the two-dimensional sheets is greater than or equal to 0.3 nm and less than or equal to 0.4 nm.
7. The metal-organic structure according to any one of claims 1 to 6 , wherein the plurality of pores are positioned within the plurality of two-dimensional sheets.
8. The metal-organic structure according to any one of claims 1 to 7 , wherein the redox potential for the plurality of metal ions is greater than or equal to -3.0 V and less than or equal to -2 V, compared to a standard hydrogen electrode.

Description

Related Application This application claims priority to U.S. Provisional Application No. 62/908,297, filed on 30 September 2019 under 35 U.S.C. §119(e) and titled "Metal-Organic Frameworks for Supercapacitor Electrodes," which is incorporated herein by reference in its entirety for all purposes. Technical field: Metal-organic structures suitable for use as supercapacitor electrodes, supercapacitor electrodes containing metal-organic structures, supercapacitors, and related articles and compositions are generally provided. Background: Supercapacitors are increasingly being used in more applications due to their significantly higher power output capacity compared to batteries. Batteries, on the other hand, excel in high energy capacity. For this reason, one of the challenges facing current technological research and development is designing cells that can exhibit both the high power density of supercapacitors and the high energy density of batteries, and therefore, new electrodes that possess both high power density and high energy density are needed. Figure 1 shows one non-limiting embodiment of a metal-organic structure according to some embodiments.Figure 2 shows one non-limiting embodiment of a metal-organic structure comprising multiple two-dimensional sheets, according to some embodiments.Figure 3 shows one non-limiting embodiment of the upper surface of a metal-organic structure containing multiple pores, according to some embodiments.Figure 4 shows one non-limiting embodiment of the side of such a two-dimensional sheet within a metal-organic structure, according to some embodiments.Figure 5 shows one non-limiting embodiment of a method for intercalating ions within a metal-organic structure between two two-dimensional sheets, according to some embodiments.Figure 6 shows one non-limiting embodiment of a method for absorbing ions into multiple pores within a metal-organic structure, according to some embodiments.Figure 7 shows one non-limiting embodiment of a supercapacitor electrode including a metal-organic structure, according to some embodiments.Figure 8 shows one non-limiting embodiment of a supercapacitor including electrodes containing a metal-organic structure, according to some embodiments.Figure 9A shows one non-limiting embodiment of a structure including a metal-organic structure, according to some embodiments.Figure 9B shows the cyclic voltammetry (CV) curve of aCu3BHT1 electrode in an aqueous LiCl electrolyte according to some embodiments.Figure 9C shows constant current charge-discharge sweeping for a metal-organic structure according to some embodiments.Figure 10 shows cyclic voltammetry curves for metal-organic structures according to some embodiments.Figure 11A shows electrochemical impedance spectroscopy (EIS) Nyquist plots collected for the Cu3BHT1electrode according to some embodiments.Figure 11B shows the powder X-ray diffraction pattern of Cu3BHT1 according to some embodiments.Figure 12 shows cyclic voltammetry curves for a Cu3BHT1 electrode in the presence of an electrolyte containing acetonitrile and LiPF6 , according to some embodiments.Figure 13A shows a schematic diagram of theNi3BHT1 structure according to some embodiments.Figure 13B shows a cyclic voltammetry curve obtained at 2 mV/sec for a metal-organic structure according to one embodiment.Figure 13C shows the specific capacitance as a function of scan speed for a metal-organic structure according to some embodiments.Figures 14A to 14C show cyclic voltammetry curves for Ni3BHT1 in electrolytes containing acetonitrile and LiPF6 at various scan speeds and potential windows according to some embodiments.Figures 14A to 14C show cyclic voltammetry curves for Ni3BHT1 in electrolytes containing acetonitrile and LiPF6 at various scan speeds and potential windows according to some embodiments.Figure 14D shows the specific capacitance as a function of scan speed for a metal-organic structure according to some embodiments.Figure 15 shows the cyclic voltammetry curve ofNi3BHT1 in an electrolyte containing acetonitrile and NaPF6 , performed at a scan speed of 20 mV/sec according to some embodiments.Figure 16 shows cyclic voltammetry curves for Ni3BHT1 in electrolytes containing ethylene carbonate, dimethyl carbonate, and LiPF6 , performed at a scan rate of 20 mV/sec according to some embodiments.Figures 17A to 17D show cyclic voltammetry curves for Ni3BHT1 in electrolytes containing acetonitrile and salts according to some embodiments.Figures 17A to 17D show cyclic voltammetry curves for Ni3BHT1 in electrolytes containing acetonitrile and salts according to some embodiments.Figures 17A to 17D show cyclic voltammetry curves for Ni3BHT1 in electrolytes containing acetonitrile and salts according to some embodiments.Figures 18A to 18B show cyclic voltammetry curves for Ni 3 BHT 1 according to some embodiments.Figures 18A to 18B show cyclic voltammetry curves for Ni 3 BHT 1 according to some embodiments.Figure 19A shows the cyclic voltam