SEM images of a ultrafine needle coke raw material (NC), b NC after graphited at 2700 °C (GNC), c NC/P-1:2 after blended at RT, d NC/P after pyrolyzed at 600 °C, e NC/P-1:2 after graphited at ...
This study examines the electrochemical characteristics of needle coke produced from petroleum residues as an anode material for lithium-ion rechargeable batteries. The needle coke is a special grade of petroleum coke produced in delayed coking operations.
The calcined high-quality soft carbon materials such as petroleum coke have excellent performance in low temperature and ratio, which makes them more concerned in the field of negative materials of the powerful lithium-ion battery, but the circulation efficiency and stability problems still need to be solved.
4. Conclusions Some cokes, e.g. needle coke (1900) and metal- lurgical coke (1900), can be used as the anode of lithium ion batteries. Graphitized coke (treated at more than 2800) can give a much better cell performance if the passive film is improved properly.
An investigation has been made of the electrochemical characteristics of high-purity petroleum coke (sulfur refined to 0.1 wt.% by the MCL process) as anode materials for lithium-ion batteries. Increase in heat treatment temperature improves the crystallization of the carbon in the coke.
Needle coke (1900 °C) and metallurgical coke (1900 °C) in particular give a capacity of over 200 mAh/g and a cyclic efficiency of nearly 100%, whereas poor performance is exhibited by those pretreated at higher or lower temperatures, e.g., petroleum cokes (500 °C, 2800 °C), pitch coke (500 °C) and needle coke (2800 °C).
The needle coke is a special grade of petroleum coke produced in delayed coking operations. Since the good quality of needle coke in terms of its structure is a main factor in enhancing the electrochemical performance, the growing method is important.
SEM images of a ultrafine needle coke raw material (NC), b NC after graphited at 2700 °C (GNC), c NC/P-1:2 after blended at RT, d NC/P after pyrolyzed at 600 °C, e NC/P-1:2 after graphited at ...
Soft carbon has been recognized as a promising anode material for potassium-ion batteries (PIBs), due to low cost, high conductivity and low voltage platform. However, their practical application is hampered by slow storage kinetics and unsatisfactory cycle life. In this work, pitch-derived needle coke, a typical soft carbon, was incorporated with oxygenated …
However, it is difficult to obtain stable charge-discharge potential and poor circulation of the anode materials for lithium-ion batteries made of needle petroleum coke. The research group further expanded the maximum carbonization temperature to 2800 ℃ and studied the change rule and electrochemical properties of graphite microcrystalline ...
A lithium-ion battery fabricated using four kinds of needle cokes exhibits a maximum high energy density of 1357mAhg-1. Systematic characterization analysis demonstrates that unique ...
Needle coke, the remaining material after refining petroleum, is used as an anode of a lithium-ion secondary battery. Sulfur is separated from the needle coke to below 0.1wt.% using the molten ...
Needle coke is attracting attention as an anode material for lithium-ion batteries due to its high reaction rates, but its low specific capacity still remains a problem to be solved. In this study, we attempted to improve the discharge capacity of needle coke-based anodes by introducing oxygen into the needle coke with ozone treatments. To ...
Herein, we report the preparation of porous carbon microspheres (PCMs) employing waste non-graphitized needle coke and graphitized needle coke as the fine carbon powder representatives, demonstrating their use as anode materials for lithium-ion batteries.
Needle coke (1900 °C) and metallurgical coke (1900 °C) in particular give a capacity of over 200 mAh/g and a cyclic efficiency of nearly 100%, whereas poor performance is exhibited by those pretreated at higher or lower temperatures, e.g., petroleum cokes (500 °C, 2800 °C), pitch coke (500 °C) and needle coke (2800 °C).
Preparation of porous carbon microspheres anode materials from fine needle coke powders for lithium-ion batteries ... demonstrating their use as anode materials for lithium-ion batteries. It was found that the graphitized PCMs had a size of 8–30 μm and surface areas between 50 and 120 m 2 g −1. When used as the anode materials, their charge capacity at the current density of 50 …
The batteries for these EVs are likely to be made with anode material produced from petroleum coke, either needle coke or very low-sulphur sponge coke. While some battery technologies that would not use coke as a feedstock are under development, these have not been commercialized on a large scale. Producing a battery with 1GWh of storage ...
Needle coke (1900 °C) and metallurgical coke (1900 °C) in particular give a capacity of over 200 mAh/g and a cyclic efficiency of nearly 100%, whereas poor performance …
Needle coke, the remaining material after refining petroleum, is used as an anode of a lithium-ion secondary battery. Sulfur is separated from the needle coke to below 0.1 wt.% using the molten caustic leaching (MCL) method developed at the Korea
Needle cokes were used as an anode material for LIBs for high-rate performance. Fluorine and oxygen functional groups are introduced by oxyfluorination. Heteroatoms were introduced to increase capacity and cycle stability. Discharge capacity of prepared LIBs was increased by 17.9 % compared to pristine.
Needle coke, the remaining material after refining petroleum, is used as an anode of a lithium-ion secondary battery. Sulfur is separated from the needle coke to below …
Needle coke, the remaining material after refining petroleum, is used as an anode of a lithium-ion secondary battery. Sulfur is separated from the needle coke to below 0.1wt.% using...
Needle coke (1900°C) and metallurgical coke (1900°C) in particular give a capacity of over 200 mAh/g and a cyclic efficiency of nearly lOO%, whereas poor performance is exhibited by those ...
Herein, we report the preparation of porous carbon microspheres (PCMs) employing waste non-graphitized needle coke and graphitized needle coke as the fine carbon powder representatives, demonstrating their use as anode …
Needle coke, the remaining material after refining petroleum, is used as an anode of a lithium-ion secondary battery. Sulfur is separated from the needle coke to below 0.1 wt.% using the molten caustic leaching (MCL) method developed at the Korea Institute of Energy Research.
Sony commercialized the lithium-ion battery anode material as petroleum coke material. The high-quality petroleum coke represented by needle-shaped petroleum coke has a series of advantages, such as low thermal expansion coefficient, low void, low sulfur, low ash content, low metal content, high conductivity, and easy graphitization, etc., so it is regarded as a high …
They used sucrose to bind silicon nanoparticles to porous carbon microspheres and graphitized needle coke produced from industrial waste materials served as a carbon source. In the design of silicon composite structures, the concept of utmost priority is to address the basic drawbacks of the silicon anode by providing additional vacancies to accommodate its …
However, it is difficult to obtain stable charge-discharge potential and poor circulation of the anode materials for lithium-ion batteries made of needle petroleum coke. The research group further expanded the maximum …
A lithium-ion battery fabricated using four kinds of needle cokes exhibits a maximum high energy density of 1357mAhg-1. Systematic characterization analysis …
Needle coke (1900°C) and metallurgical coke (1900°C) in particular give a capacity of over 200 mAh/g and a cyclic efficiency of nearly lOO%, whereas poor performance is exhibited by those ...
DOI: 10.1007/s11581-021-04278-5 Corpus ID: 237620758; A green phenolic resin/needle coke scrap–based carbon/carbon composite as anode material for lithium-ion batteries @article{Chen2021AGP, title={A green phenolic resin/needle coke scrap–based carbon/carbon composite as anode material for lithium-ion batteries}, author={Ge Chen and …
Needle coke is attracting attention as an anode material for lithium-ion batteries due to its high reaction rates, but its low specific capacity still remains a problem to be solved. …
High-quality needle cokes, a type of petroleum coke (petcoke), have been the feedstock of choice for the synthetic graphite producers. Petcoke should first be calcined to remove most of its volatile impurities, commonly using rotary kilns. The calcined coke can then be sized, before very high-temperature (~3000 °C) graphitization in electrically heated furnaces. 2 …
Needle coke, the remaining material after refining petroleum, is used as an anode of a lithium-ion secondary battery. Sulfur is separated from the needle coke to below 0.1 wt.% using the …
The rates and specific capacities of lithium-ion battery anodes are important factors used in evaluating the batteries. Needle coke is attracting attention as an anode material for lithium-ion ...
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