Carbon nanotube or carbon nanofiber electrode comprising sulfur or metal nanoparticles as a binder and process for preparing the same

A technology of metal nanoparticles and carbon nanofibers, which is applied in the direction of microscopic fiber electrodes, electrode manufacturing, hybrid capacitor electrodes, etc., can solve the problems of internal resistance increase and achieve low contact resistance, low ESR, and strong durability.

Inactive Publication Date: 2007-02-07
KH CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the process using this binder is easy, there is a disadvantage of increased internal resistance due to organic binders

Method used

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  • Carbon nanotube or carbon nanofiber electrode comprising sulfur or metal nanoparticles as a binder and process for preparing the same

Examples

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preparation example Construction

[0073] In the process for preparing a carbon nanotube electrode or carbon nanofiber electrode according to the present invention, it is important to uniformly mix carbon nanotubes or carbon nanofibers with sulfur nanoparticles or metal nanoparticles used as a binder, but not Their methods are not particularly limited. As the mixing method, physical mixing, ultrasonic mixing, general dispersion in a solvent and then removing the solvent, and the like are mentioned.

[0074] In the description of the present invention, the word "metal" is not particularly limited literally, and refers to any material having electrical conductivity. For example, it represents in addition to nonmetals (elements in group VIII of the periodic table, F, Cl, Br and I in group VII, O in group VI, N in group V, H in group I) and semi-metals Any element other than a metal (B in Group IIIB, C, Si and Ge in Group IV, Se, Te and Po in Group V). In particular, the term "metal" in the present invention is n...

example 1

[0088] This example shows the fabrication of carbon nanotube electrodes or carbon nanofiber electrodes using copper (Cu) nanoparticles as a binder by depositing copper compound nanoparticles on carbon nanotubes and then reducing these nanoparticles of.

[0089] Carbon nanotubes (CNTs) used as electrode materials were synthesized by catalytic evaporation with an average diameter of 1 nm and 210 m 2 Single-walled nanotubes (SWCNT) (KH Chemicals Co., Ltd.) with a surface area of ​​ / g.

[0090] The copper compound Cu(NO 3 ) 2 deposited on carbon nanotubes. The carbon nanotubes deposited with copper compound nanoparticles were dried at 110°C for one day, and then reduced in hydrogen at 400°C for two hours. These Cu nanoparticle-deposited carbon nanotubes thus prepared were formed into discs under a pressure of 10 atm.

[0091] The Cu nanoparticle-deposited carbon nanotube disk was placed on a 75-μm-thick nickel foil as a current collector, and then kept at 900° C. for ten minu...

example 2

[0093] The Cu nanoparticle-deposited carbon nanotube powder prepared as in Example 1 was dispersed on a nickel foil as a current collector, and then kept at 1100° C. while applying pressure in nitrogen, thereby producing an electrode. The applied pressure was 10 atm, and the pressurization time was 5 minutes.

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Abstract

The present invention provides an electrode made of carbon nanotubes or carbon nanofibers and a process for preparing the same. The electrode comprising a current collector, sulfur or metal nanoparicles as a binder, and carbon nanotubes or carbon nanofibers is characterized in that the sulfur or metal nanoparticles are bonded, deposited, or fused on the surfaces of the carbon nanotubes or carbon nanofibers so that the carbon nanotubes or carbon nanofibers are bonded to each other and also bonded to the current collector. The electrode prepared according to the present invention exhibits low internal resistance, strong durability and low equivalent series resistance, and therefore the electrode can be effectively used for secondary batteries, supercapacitors or fuel cells.

Description

technical field [0001] The present invention relates to a carbon nanotube electrode or a carbon nanofiber electrode including sulfur nanoparticles or metal nanoparticles as a binder and a preparation process thereof. In particular, the present invention relates to electrode materials in which internal bonding of electrode materials comprising carbon nanotubes or carbon nanofibers is obtained by utilizing sulfur nanoparticles or metal nanoparticles as a binder and applying heat and / or pressure to the electrode system and electrode materials A carbon nanotube electrode or a carbon nanofiber electrode bonded to a current collector and a preparation process thereof. The invention also relates to the use of carbon nanotube electrodes or carbon nanofiber electrodes in secondary batteries, supercapacitors or fuel cells. Background technique [0002] Recently, with the transition to an information society and the appearance of portable electronic devices, attention to energy storag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01G9/00H01G9/058H01G9/155H01M4/02H01M4/58H01M4/66H01M4/74H01M4/88H01M4/96
CPCH01M2004/022H01M2004/021H01G9/155H01G9/058H01G11/28Y02E60/13H01M4/8882Y02E60/12H01M4/745H01M4/043H01M4/583H01M4/8875H01M4/661H01M4/621H01G11/36H01M4/8896B82Y30/00H01M4/96H01M4/0471Y02E60/50Y02E60/10Y02P70/50H01Q1/242H04M1/0216
Inventor 金永男
Owner KH CHEM CO LTD
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