Physical forms of MXene materials exhibiting novel electrical and optical characteristics

A performance, capacitance technology, applied in the direction of tungsten/molybdenum carbide, chemical instruments and methods, circuits, etc., can solve expensive and other problems

Active Publication Date: 2017-08-01
DREXEL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

All of these represent "bottom-up" nanomaterials that require expensive synthetic procedures to create starting materials

Method used

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  • Physical forms of MXene materials exhibiting novel electrical and optical characteristics
  • Physical forms of MXene materials exhibiting novel electrical and optical characteristics
  • Physical forms of MXene materials exhibiting novel electrical and optical characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 5

[0227] Example 5: General Comments

[0228] m n+1 x n (T s ) MXenes, a relatively new class of 2D solids produced by selective etching of group A layers from MAX phases, are a family of more than 70 members of hierarchical hexagonal anterior transition metal carbides and nitrides. So far, all M n+1 x n (T s ) MXenes were all produced by etching the MAX phase in concentrated hydrofluoric acid HF or ammonium bifluoride. m n+1 x n (T s ) MXenes have proven to be promising candidates for electrodes in Li-ion batteries and supercapacitors, exhibiting volumetric specific capacitances exceeding most previously reported materials. However, the road to electrode fabrication requires operations in concentrated HF and tedious multi-step procedures. Here, a safer route was sought by exploiting the reaction between the commonly used and inexpensive hydrochloric acid HCl and fluoride salts. Furthermore, considering the M n+1 x n (T s ) MXenes are capable of preferential interc...

Embodiment 1

[0230] Example 1. Materials and Methods - Clay

Embodiment 11

[0231] Example 1.1.Ti 3 AlC 2 Synthesis of : used as precursor in this paper for Ti 3 C 2 (T s ) synthesized MAX phase Ti 3 AlC 2 Prepared as follows: commercial Ti 2 AlC powder (Kanthal, Sweden) to TiC in a 1:1 molar ratio (for ~12 wt.% Ti already present in the commercial powder 3 AlC 2 After adjustment) mixed, then ball milled for 18h. The mixture was then heated in a tube furnace at 1350° C. for 2 h at 5° C. / min under flowing argon gas Ar. The resulting lightly sintered brick was ground with a TiN-coated milling bit and sieved through a 400 mesh screen to yield a powder with a particle size of less than 38 μm.

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Abstract

The present invention(s) is directed to novel conductive Mn+1Xn(Ts) compositions exhibiting high volumetric capacitances, and methods of making the same. The present invention(s) is also directed to novel conductive Mn+1Xn(Ts) compositions, methods of preparing transparent conductors using these materials, and products derived from these methods.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application Nos. 62 / 055,155, filed September 25, 2014, and 62 / 214,380, filed September 4, 2015, the entire contents of which are incorporated herein by reference. [0003] government power [0004] This application was made with Government support under Contract No. 1310245 awarded by the National Science Foundation. The US Government has certain rights in this invention. technical field [0005] The present invention relates to conductive two-dimensional M n+1 x n (T s ) Novel physical forms of MXene compositions and methods for their manufacture. Background technique [0006] The search for new electroactive materials is driven by a wide range of potential applications. [0007] Safe and powerful energy storage devices are becoming increasingly important. Electrochemical capacitors, especially pseudocapacitors, can offer charge times ranging from seconds to minutes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/90C01B32/921C01B32/949C01B21/06C01B21/076
CPCH01L33/42C01B32/914C01B32/921C01B32/949C04B35/56C04B35/5607C04B35/5618C04B35/58007C04B2235/3201C04B2235/3203C04B2235/3205C04B2235/445H01L31/022466H10K50/805C04B35/58
Inventor 迈克尔·J·吉迪乌迈克尔·W·巴尔苏姆尤里·戈高齐斯阿伦·托马斯·法法尔曼安德鲁·德弗里斯·狄龙
Owner DREXEL UNIV
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