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934666

Sigma-Aldrich

Hard carbon

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electrode sheet, copper substrate, size 5 in. × 10 in.

Synonym(s):

Hard carbon anode, Sodium-ion anode

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About This Item

UNSPSC Code:
26111700
NACRES:
NA.21

material

copper substrate (current collector)

Quality Level

100

grade

battery grade

description

Description/Nominal Voltage: 0.1 V vs Li/Li+

Assay

≥98% (active material characteristic)

composition

Active material loading 10.21 mg/cm2 ± 5%

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Design for Energy Efficiency
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sustainability

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sheet size

10 μm , copper current collector
45 μm , excluding current collector
5 in. × 10 in.

size

5 in. × 10 in.

avg. part. size

5 μm (active material characteristic)

capacity

2.4 mAh/cm2±5 % (Areal)
 290 mAh/g±5 % (Experimental Lithiation)

application(s)

battery manufacturing

greener alternative category

Enabling

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General description

Hard carbon electrode sheet is an electrode film of activated carbon cast on copper. Hard carbon is a low-density material with extremely high microporosity. Standard electrode sheets are 5 inches x 10 inches (127 mm x 254 mm) and cast single-sided on 10 µm thick copper foil current collectors. The composition of the electrode film is 90% graphite, 5% poly(vinylidene fluoride) [PVDF] and 5% Super P. PVDF acts as binder due to its thermal and electrochemical stability and strong adhesive properties.
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Application

Our hard carbon electrode sheet is a ready-to-use anode for alkali metal ion batteries such as sodium ion batteries (SIBs), lithium ion batteries (LIBs), and potassium ion batteries. Hard carbon is the anode of choice for sodium-ion batteries, where the use of graphite as an anode in SIBs is inhibited by the inability of sodium ions to form a binary graphite intercalation compound. Hard carbon offers a low insertion/deinsertion potential (~0.1 V Na/Na+) ideal for achieving high voltages. With an experimental capacity of 240 mAh/g and areal capacity of 2.32 mAh/cm2, our electrodes demonstrate outstanding electrochemical performance.

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

新产品

Certificates of Analysis (COA)

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Hard carbons for sodium-ion batteries: Structure, analysis, sustainability, and electrochemistry
Xinwei et al.
Materials Today, 23, 87-104 (2019)
High-capacity activated carbon anode material for lithium-ion batteries prepared from rice husk by a facile method
Kaifeng et al.
Diamond and Related Materials, 86, 139 - 145 (2018)

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