Mesoporous soft carbon (MSC) was prepared from mesophase pitch using nano-CaCO3 as the template. The crystalline structure of soft carbon consists of a disordered region with a large interlayer distance benefitting sodium ion insertion/extraction and a graphitic region with good electrical conductivity favor
Mesoporous soft carbon (MSC) was prepared from mesophase pitch using nano-CaCO3 as the template. The crystalline structure of soft carbon consists of a disordered region with a large interlayer distance benefitting sodium ion insertion/extraction and a graphitic region with good electrical conductivity favor
The present study aims at developing a silicon/soft-carbon nanohybrid material for high performance lithium-ion battery (LIB). It is composed of micronized silicon coated with so-called "soft-carbon" dispersed in soft-carbon matrix at nanometer level.
The soft carbon was investigated with great interest because of its promising application in high-power lithium-ion batteries. A recently developed soft …
Lithium-ion batteries (LIBs), used for energy supply and storage equipment, have been widely applied in consumer electronics, electric vehicles, and energy s... For LIBs, graphite is one of the most widely used anode materials. Due to its good electrical conductivity ...
A robust structure (EGC) of expanded graphite frame regulated with soft carbon, boosts lithium-ion diffusion kinetics. ... Sb@C/expanded graphite as high-performance anode material for lithium ion batteries. J. Alloys Compd. (2018) J. Lee et al. An angstrom-level d-spacing control of graphite oxide using organofillers for high-rate lithium storage.
Fig. 1 shows the SEM images of carbon materials (Table S3).Specifically, Fig. 1 a reveals that Fc-0 displays a typical lamellar structure after carbonization, suggesting that CTP by itself is incapable of forming fibrous structures. Fc-10 mainly exhibits molten carbon due to the weak catalytic effect (Fig. 1 b).A worm-like fibrous structure is formed …
Improving the Initial Coulombic Efficiency of Carbonaceous ...
Hard carbon anode for lithium-, sodium-, and potassium ...
Lithium-ion battery
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 …
Abstract: In order to satisfy the requirement of distributed storage system for high power applications, developing a new high power anode materiel for lithium-ion batteries is necessary. In this paper, a novel carbon composite material was developed through ...
Phosphorus-doped soft carbon was synthesized by a facile phosphoric acid-assisted route. It is found that the phosphorus-doped soft carbon used as lithium ion battery anode exhibits a high reversible capacity of 333.6 mA h g–1 with the first cycle coulombic efficiency of 87.0% at the current density of 30 mA g–1. When used as sodium …
For pouch cell assembling, soft-packed pouch lithium-ion battery (LIBs) (16 mAh) were assembled using as-made SC-40 negative electrodes, LiNi 0.6 Mn 0.2 Co 0.2 O 2 (NMC622, Umicore rechargeable battery materials, Belgium) positive electrodes and
2.1. Electrolyte additives. The presence of specific chemical additives in the electrolyte results in a modulation of the properties of the SEI. Electrolyte additives in lithium-ion systems improve not only the performance but also the life and the safety of these systems [19], [20], [21].Among them, the most commonly encountered are cyclic …
A petroleum residue-based carbon electrode for use in a lithium-ion battery was prepared through the thermal reaction of pyrolyzed fuel oil. The samples were characterized by their softening point, crystallinity and battery performance. ... can be used to control the initial irreversible capacity of the soft carbon. These carbonaceous …
Electrochemically Expandable Soft Carbon as Anodes for Na ...
Uniformly expanded interlayer distance to enhance the rate performance of soft carbon for lithium-ion batteries. April 2019; Ionics 25 ... is widely used as anode material for lithium-ion ...
Mesoporous soft carbon (MSC) was prepared from mesophase pitch using nano-CaCO3 as the template. The crystalline structure of soft carbon consists of a disordered region with a large interlayer distance benefitting sodium ion insertion/extraction and a graphitic region with good electrical conductivity favor
Highly nitrogen doped carbon nanofibers with superior rate ...
Silicon oxides have emerged as promising anode materials for next-generation lithium-ion batteries (LIBs) due to their low working potentials, high theoretical specific capacities, and abundant resources. However, the large volume expansion and the inherent low conductivity limit their practical applications
For LIBs, graphite is one of the most widely used anode materials. Due to its good electrical conductivity, high crystallinity, and good layered structure, lithium ions can be reversibly inserted or extracted, and a theoretical specific capacity of 370 mAhg −1 and an efficiency above 90% are delivered. The intercalation reaction of lithium in …
Electrochemically Expandable Soft Carbon as Anodes for Na ...
The recent development of lithium rechargeable batteries results from the use of carbon materials as lithium reservoir at the negative electrode. Reversible intercalation, or insertion, of lithium into the carbon host lattice avoids the problem of lithium dendrite formation and provides large improvement in terms of cycleability and …
Sodium-ion batteries (SIBs) are gaining renewed interest as a promising alternative to the already commercialized lithium-ion batteries. The large abundance, low cost, and similar electrochemistry of sodium (compared with lithium) is attracting the attention of the ...
Potassium ion batteries (KIBs) have emerged as a promising energy storage system, but the stability and high rate capability of their electrode materials, particularly carbon as the most investigated anode ones, become a primary challenge. Here, it is identified that ...
1 INTRODUCTION. Among the various energy storage devices available, 1-6 rechargeable batteries fulfill several important energy storage criteria (low installation cost, high durability and reliability, long life, and high round-trip efficiency, etc.). 7-12 Lithium-ion batteries (LIBs) are already predominantly being used in portable electronic devices. 13, 14 …
In recent years, lithium-ion batteries (LIBs) have become the electrochemical energy storage technology of choice for portable devices, electric vehicles, and grid storage. However, the lack of a fast charging technology restricts the further development of LIBs.
Carbonaceous materials have been accepted as a promising family of anode materials for lithium-ion batteries (LIBs) owing to optimal overall performance. Among various emerging carbonaceous anode materials, hard carbons have recently gained significant attention for high-energy LIBs.
Silicon (Si) is considered as one of the most potential commercial materials for the next-generation lithium-ion batteries (LIBs) owing to its high theoretical capacity and low …
In this study, we focused on silicon-based electrode materials for lithium-ion battery (LIB); theoretical capacity is approximately 10 times greater than that of graphite electrode of LIB. ... An electrode composed of the silicon/soft-carbon nanohybrid material with a 62.3/37.7 wt% ratio exhibited an electrode expansion rate of 19.2%, ...
The present study aims at developing a silicon/soft-carbon nanohybrid material for high performance lithium-ion battery (LIB). It is composed of micronized silicon coated with so-called "soft-carbon" dispersed in soft-carbon matrix at nanometer level. This material is characterized with abundant nanosized voids with diameter of ca. 70 nm …
Herein, a hierarchical porous hard carbon@Si@soft carbon (PHC@Si@SC) material was prepared by a chemical vapor deposition (CVD) and following calcination process. ...
ABSTRACT This paper is to investigate the mesophase sphere soft carbon material with micro-nano composite structure and its application in the energy-storage Li-ion battery and electrochemical performance of the battery through experimental tests. The results show that the ball diameter is below 10 μm. For button half-cell, the first …
Lithium-ion batteries (LIBs) have helped revolutionize the modern world and are now advancing the alternative energy field. Several technical challenges are associated with LIBs, such as increasing their energy density, improving their safety, and prolonging their lifespan. Pressed by these issues, researchers are striving to find …
Engineering of Sodium-Ion Batteries: Opportunities and ...