SKU: 22663287598

Hard carbon paper

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Description

Hard carbon paperProduct Name Name: Hard carbon paper Product Overview Hard carbon refers to carbon that is difficult to graphitize, usually obtained by thermal decomposition of cross linked resins with special structures at around 1000 C Common hard carbons include resin carbon, organic polymer pyrolytic carbon, and carbon black. Hard carbon is also a highly regarded negative electrode material in sodium ion batteries. The negative electrode material of sodium ion

Product Name

Name:Hard carbon paper


Product Overview

 

Hard carbon refers to carbon that is difficult to graphitize, usually obtained by thermal decomposition of cross-linked resins with special structures at around 1000 ¡ãC Common hard carbons include resin carbon, organic polymer pyrolytic carbon, and carbon black. Hard carbon is also a highly regarded negative electrode material in sodium ion batteries. The negative electrode material of sodium ion batteries, as the main body of sodium storage in batteries, plays a decisive role in the development of batteries. Compared with other negative electrode materials for sodium ion batteries, hard carbon has the characteristics of disordered internal crystal arrangement and large interlayer spacing, which enables the hard carbon negative electrode to store more charges at the same volume, improving the energy density and endurance of sodium ion batteries. Meanwhile, due to the larger pore structure of hard carbon, it can accommodate more sodium ions, resulting in more uniform expansion and contraction of the electrode during discharge, which increases its cycling stability, charge discharge performance, and prolongs the cycling life of sodium ion batteries. At present, sodium ion batteries have become a hot topic in research and industrialization both domestically and internationally. With the deepening of related research and the development of technology, the market size of hard carbon negative electrode materials is expected to continue to grow. However, there is still no unified understanding of the sodium storage mechanism of hard carbon, and further research is needed to reveal its structure-activity relationship with electrochemical reaction mechanisms, as well as to explore the influence of physical parameters of hard carbon materials on electrochemical performance.


Technical Parameter

 

Appearance:Black fibrous

Length:100-200μm(SEM)

Diameter:5-20μm(SEM)


Product Features

 

Difficult to graphitize: Even at high temperatures above 2500 ¡ãC it is difficult to graphitize.

Short range carbon layer stacking and long-range disordered structure: During the pyrolysis process, the carbon layer tends to grow in a planar direction, but the cross-linking structure in macromolecules hinders its planar growth. Therefore, the carbon layer in hard carbon cannot infinitely extend and grow into a graphite like layered structure, and can only exhibit a carbon layer stacking structure in the short range, while it remains disordered in the long range. Its structure is mainly composed of amorphous parts, with some carbon layers randomly stacked, resulting in defects and pores, while the other part of the carbon layer has a graphite microcrystalline structure, which has no orientation and is cross-linked with each other.

Large interlayer spacing and more micropores: Compared to graphite, hard carbon has a larger interlayer spacing and more micropores, which allows ions to be quickly inserted and removed. Correspondingly, there are more lithium storage active sites for ion insertion and removal, resulting in a larger specific capacity.

Excellent rate performance: Theoretically, hard carbon materials have good rate performance and can achieve high rate charging and discharging.

Long cycle life: The hard carbon structure is stable and has a long charge discharge cycle life.


Application Fields

 

New energy vehicles: Although there is still room for improvement in energy density and cycle life of sodium ion batteries, their performance indicators such as low temperature, safety, and fast charging are good, and they can be used in some new energy vehicles that do not require extreme endurance;

Large scale energy storage: With the rapid expansion of renewable energy generation such as solar and wind power, the demand for energy storage is also increasing. Sodium ion batteries have certain application prospects in the field of energy storage, and hard carbon as its negative electrode material can help improve the performance of energy storage batteries;

Consumer electronic devices, such as smartphones, tablets, laptops, etc., can meet the requirements of these devices for fast battery charging, safety, and other aspects;

Smart grid: In the smart grid, sodium ion batteries can be used in energy storage systems to help balance supply and demand, improve the stability and reliability of the grid;

Low speed transportation vehicles, such as electric bicycles, electric tricycles, etc., have relatively low requirements for battery weight and volume. Sodium ion batteries can be applied due to their cost advantage.


Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

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SKU: 22663287598

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Verified Purchase
Cali Mom
Pawtucket, US
★★★★★ 5
Perfect size, high quality
Size: 7.7" x 7.7" x 1.7", Color: Black (Metal Silvered)
I had a previous catch all tray that I bought on amazon, it used buttons on the 4 corners to turn a flat cardboard into a tray. Over time, the catch all tray got filled up, not just with a wallet, keys and eyeglasses but eventually business cards and other knick knacks. With all the items inside the tray, sometimes the buttons would start to pop out. It wasn't awful, more of an annoyance. But it was time for me to find a more durable tray. I looked on amazon and added 6 different trays that had "potential" into my shopping cart. Then I carefully evaluated each one and deleted them out of my cart until there was only one left. Some had multiple compartments. Some were larger than this one. I felt the ones with compartments would limit my ability to put the things I want in there. Also, I didn't want it so big that it took up too much desk space. Ultimately, I felt this was the perfect size. I'm extremely happy with it, the quality is really nice and it looks and feels durable. No more loose buttons and spilled knick knacks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 14, 2024
D
Verified Purchase
Denise
Pawtucket, US
★★★★★ 5
Keeps clutter away
Size: 7.7" x 7.7" x 1.7", Color: Black (Metal Silvered)
This works great to corral all my notes I write on post its or small notes. Keeping them hidden from the desk top b/c or the depth but still visible to me. Much better than keeping on the plotter. Looks great in quality .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2025
M
Verified Purchase
MovieGuy
Waukegan, US
★★★★★ 5
Attractive, Simple, And Well-Made
Size: 7.7" x 7.7" x 1.7", Color: Orange (Metal Glided)
I use this as a "catchall". A place to stash things like my wallet and keys when I enter the door, so that I don't use them (I had been prone to that!). It serves it's purpose well. It's both sturdy and attractive, and a good size for a "catchall". Recommended for those like me who need such things.
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Reviewed in the United States on April 8, 2024
K
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Kirstin Gramith
West Palm Beach, US
★★★★★ 4
Good quality, orange color
Size: 7.7" x 7.7" x 1.7", Color: Orange (Metal Glided), Size: 7.7" x 7.7" x 1.7", Color: Orange (Metal Glided)
The quality is surprisingly good but the color is much more orange toned in person.
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Reviewed in the United States on April 17, 2024
K
Verified Purchase
kenneth
Lowell, US
★★★★★ 5
Holder
Size: 7.7" x 7.7" x 1.7", Color: Black (Metal Silvered)
It’s great for my keys and wallet and other stuff I use it every day
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 30, 2025

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