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Electrode particles suitable for batteries

A particle, average particle size technology, used in battery electrodes, negative electrodes, electrode manufacturing, etc., can solve problems such as high production costs and low product yields

Pending Publication Date: 2022-02-25
PHILLIPS 66 CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, production costs are high and, for some coating processes, product yields are low

Method used

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  • Electrode particles suitable for batteries
  • Electrode particles suitable for batteries
  • Electrode particles suitable for batteries

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Embodiment

[0034] The material thus produced was evaluated for usefulness as negative electrode material (lithium intercalation) in a coin cell with lithium metal as the counter electrode. The preparation process is described as follows:

[0035] Electrode Preparation—Each electrode was fabricated by the following steps: Step 1) About 2 g of graphitized powder and 0.043 g of carbon black, 0.13 g of polyvinylidene fluoride (PVDF) (in 10% by weight solution (in N-methyl pyrrolidone (NMP)) into a 25-ml plastic vial and shake in a grinder with about 3 g of 1 / 8" steel balls for 10 minutes to form a homogeneous slurry. Add additional NMP to make the mixture more flowable Step 2) Cast a thin film of the resulting slurry on copper or aluminum foil using a knife coater. The resulting film is dried on a hot plate at 120°C for at least 2 hours. Step 3) Trim the dried film into 5 cm wide strips , and densification by a roller press.Step 4) each film punches out three discs (1.5 centimeters in diame...

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Abstract

The disclosure relates to a carbon-based electrode material that has been graphitized to hold ions in the electrode of a battery and more particularly include carbide or carbide and nitride surfaces that protect the graphite core. The preferred batteries include metal ion such as lithium ion batteries where the carbon-based electrode is the anode although the carbon-based electrode may also serve in dual ion batteries where both electrodes may comprise the graphitized carbon-based electrodes. The electrodes are more amorphous than conventional graphite electrodes and include a carbide or nitride containing surface treatment.

Description

[0001] Cross References to Related Applications [0002] This is a PCT International Application claiming U.S. Provisional Patent Application Serial Nos. 62 / 875,299, 62 / 875,315, and 62 / 875,318 filed on July 17, 2019 and U.S. Patent Application Serial No. 16 / Priorities 929,222, 16 / 929,233, and 16 / 929,248, all entitled "Electrode Particles Suitable for Batteries," are hereby incorporated in their entirety. [0003] field of invention [0004] The present invention relates to batteries, and more particularly to materials useful in the manufacture of battery anodes, more particularly materials useful for anodes in metal ion batteries. [0005] Background of the invention [0006] Rechargeable Li-ion batteries are widely used in many portable systems and devices such as cell phones, tablets, computers, handheld portable tools and new devices are being developed that rely on the power and weight advantages of Li-ion batteries. The advantages are light weight, high voltage, high el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/00H01M4/02
CPCH01M4/133H01M4/1393H01M4/587H01M4/366H01M4/62H01M4/0471C04B2235/425C04B35/62831C04B2235/5436C04B35/6261C04B2235/422C01B32/205Y02E60/10H01M4/136H01M2004/021H01M2004/027H01M10/0525H01M4/583C04B35/62839
Inventor 毛振华N·李C·W·托普夫D·史C·J·拉弗兰柯伊斯
Owner PHILLIPS 66 CO