Lithium Ion Storage Performance Research Articles

Insights into the enhanced Lithium-Ion storage performance of CoSx/Carbon polyhedron hybrid anode

In this work, the 3D cobalt sulfide/carbon polyhedral (CoSx/CP) hybrids (x = 1, 2) have been fancily prepared by employing the ZIF-67 as template. The as-prepared CoSx/CP inherit the structure of ZIF-67, realizing the polyhedral structure where the CoSx nanoparticles are well embedded. The battery performance measurements demonstrate that the CoS2 has played a significant role contributing to the lithium ions batteries (LIBs) performance of CoSx/CP. As a result, the capacity of the optimized CoSx/CP is 562 mAh g−1 after 300 cycles at 0.5 A g−1. When cycled at 10 A g−1, it delivers a reversible specific capacity of 131 mAh g−1. The electrochemical analysis points out that the optimized CoSx/CP possesses diverse electrochemical reactions and the lowest charge transfer resistance. Moreover, the insertion mechanism and structural evolution process of CoSx/CP are examined by the in-situ XRD. Beyond that, the unique nanoarchitecture of CoSx/CP guarantees the high specific surface area which enables the large electrode–electrolyte contract area, fast ions diffusion/electron transfer and robust structural stability. Meanwhile, the carbon skeleton is deductive to confine the huge volume expansion of CoSx as well.

A variety of carbon-coated FeS2 anodes: FeS2@CNT with excellent lithium-ion storage performance

Pyrite FeS2, which has abundant reserves, is widely regarded as an excellent anode material for lithium-ion batteries. However, FeS2 is prone to volume expansion and low conductivity during charging and discharging, resulting in poor electrochemical performance. In this paper, a fast non-hydrogel method was used to synthesize the precursor of FeS2 @C (carbon nanotubes, graphene, crab shell carbon, and sucrose carbon), and the obtained FeS2@CNT has a relatively best electrochemical performance. Benefiting from its structural advantages, FeS2@CNT exhibits a good rate performance (1200, 1125, 1020, 920 and 820 mA h g−1 at five levels of the current density of 100–2000 mA g−1). And it has an excellent cycle performance (1200 mA h g−1 after 100 cycles at 100 mA g−1). It shows that this method has considerable advantages in the process of preparing composites.

Rational design of 3D net-like carbon based Mn3O4 anode materials with enhanced lithium storage performance

A three-dimensional net-like Mn3O4/carbon paper composite was realized, which delivers a remarkably enhanced rate performance and excellent cycling stability for lithium-ion storage.

Highly Stable Lithium-Ion Wide-Temperature Storage Performance Achieved Via Anion-Dominated Solvation Structure and Electric Double Layer Engineering

Highly Stable Lithium-Ion Wide-Temperature Storage Performance Achieved Via Anion-Dominated Solvation Structure and Electric Double Layer Engineering

Rational and Facile Fabrication of Mns Nanoparticles Embedded in 2d Nitrogen, Sulfur Doped Carbon Microsheet for Enhancing Lithium Ion Storage Performance

Rational and Facile Fabrication of Mns Nanoparticles Embedded in 2d Nitrogen, Sulfur Doped Carbon Microsheet for Enhancing Lithium Ion Storage Performance

Synergistic Effect on the Improved Lithium Ion Storage Performance in the Porous Fe2o3@Fe3c@C Composite

Synergistic Effect on the Improved Lithium Ion Storage Performance in the Porous Fe2o3@Fe3c@C Composite

Ultrasonication-assisted fabrication of porous ZnO@C nanoplates for lithium-ion batteries

Lithium-ion batteries have made significant commercial and academic progress in recent decades. Zinc oxide (ZnO) has been widely studied as a lithium-ion battery anode due to its high theoretical capacity of 987 mAh g-1, natural abundance, low cost, and environmental friendliness. However, ZnO suffers from poor electronic conductivity and large volume variation during the battery discharge/charge process, leading to capacity deterioration during long-term cycling. Herein, porous ZnO@C nanoplates are developed to offer short ion diffusion pathways and good conduction networks for both Li ions and electrons. The porous nanoplates provide abundant active sites for electrochemical reactions with minimized charge transfer impedance. As a result, the porous ZnO@C nanoplates deliver higher performance for lithium-ion storage compared with a bare ZnO anode. Furthermore, with the introduction of reduced graphene oxide (rGO), the ZnO@C@rGO composite anode achieves a capacity of 229.3 mAh g-1 at a high current density of 2 A g-1.

MoP2/C@rGO synthesised by phosphating the molybdenum-based metal organic framework and GO coating with excellent lithium ion storage performance.

With a high specific capacity, MoP2 has been identified as an ideal electrode material for LIBs. However, the specific capacity is negatively affected due to its poor conductivity and severe volume expansion during insertion and extraction of Li+. In this paper, MoP2-C synthesized by using a Mo-MOF as a precursor, with the generation of C, can effectively solve the agglomeration problem in the synthesis process and alleviate serious volume changes during cycling. Due to the lack of carbon sources provided by a Mo-MOF, the conductivity of MoP2-C cannot be greatly improved. Therefore, rGO and PPy are added to improve the conductivity of MoP2 and further increase the stability of the structure. Compared with MoP2/C and MoP2/C@PPy, MoP2/C@rGO exhibits the highest initial discharge specific capacity of 1208 mA h g-1 at a current density of 100 mA g-1 and rate performances of 830, 750, 630, 550, and 430 mA h g-1 with the current density increasing from 100 mA g-1 to 2000 mA g-1. Notably, the specific capacity remains at 640 mA h g-1 at a current density of 100 mA g-1 after 100 cycles. Followed by 200 cycles at a current density of 2000 mA h g-1, the specific capacity remains at 395 mA h g-1 with a capacity retention rate of 80%.

Hybridization of Ti2snc with Carbon Nanofibers Via Electrospinning for Improved Lithium Ion Storage Performance

Hybridization of Ti2snc with Carbon Nanofibers Via Electrospinning for Improved Lithium Ion Storage Performance

Zinc vacancy modulated quaternary metallic oxynitride GeZn1.7ON1.8: as a high-performance anode for lithium-ion storage.

The development of alternative anode materials to achieve high lithium-ion storage performance is crucial for the next-generation lithium-ion batteries (LIBs). In this study, a new anode material, Zn-defected GeZn1.7ON1.8 (GeZn1.7−xON1.8), was rationally designed and successfully synthesized by a simple ammoniation and acid etching method. The introduced zinc vacancy can increase the capacity by more than 100%, originating from the additional space for the lithium-ion insertion. This GeZn1.7−xON1.8 particle anode delivers a high capacity (868 mA h g−1 at 0.1 A g−1 after 200 cycles) and ultralong cyclic stability (2000 cycles at 1.0 A g−1 with a maintained capacity of 458.6 mA h g−1). Electrochemical kinetic analysis corroborates the enhanced pseudocapacitive contribution and lithium-ion reaction kinetics in the GeZn1.7−xON1.8 particle anode. Furthermore, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses at different electrochemical reaction states confirm the reversible intercalation lithium-ion storage mechanism of this GeZn1.7−xON1.8 particle anode. This study offers a new vision toward designing high-performance quaternary metallic oxynitride-based materials for large-scale energy storage applications.

Mo/Moo2/C Formed by Reducing Mo-Mofs One Step with High Initial Columbic Efficiency and Excellent Lithium-Ion Storage Performance

Mo/Moo2/C Formed by Reducing Mo-Mofs One Step with High Initial Columbic Efficiency and Excellent Lithium-Ion Storage Performance

Synthesis of MnO–Sn cubes embedding in nitrogen-doped carbon nanofibers with high lithium-ion storage performance

In this paper, a carbon nanofiber (CNF) hybrid nanomaterial composed of MnO–Sn cubes embedding in nitrogen-doped CNF (MnO–Sn@CNF) is synthesized through electrospinning and post-thermal reduction processes. It exhibits good electrochemical lithium-ion storage performance as the anode, such as high reversible capacity, outstanding cycle performance (754 mAh g−1 at 1 A g−1 after 1000 cycles), and good rate capability (447 mAh g−1 at 5 A g−1). The excellent electrochemical properties are derived from a unique nanostructure design. MnO–Sn@CNF has a three-dimensional conductive network with a stable core–shell structure, which improves the electrical conductivity and mechanical stability of the materials. In addition, the mesopores on the surface of carbon fibers can shorten the diffusion distance of lithium ions and promote the combination of active sites of the material with lithium ions. The internal MnO and Sn form a heterostructure, which enhances the stability of the physical structure of the electrode material. This material design method provides a reference strategy for the development of high-performance lithium-ion batteries anode.

Construction of MoSe2 nanoparticles anchored on layered microporous carbon heterostructure anode for high-performance and low-cost lithium-ion capacitors

Lithium ion capacitors (LICs), which elaborately integrate the feature of supercapacitors and lithium-ion batteries have recently aroused extensive research attentions. Nevertheless, balancing the discrepancy of electrochemical kinetics between capacitive-type cathode and battery-type anode materials plays the pivotal role in constructing high-performance of LICs. Additionally, the cathode and anode of LICs usually adopt various material synthesis routes, making the fabrication procedures complicated and expensive from the perspective of energy storage devices. Herein, the one‑carbon dual-purpose strategy is proposed for simultaneous manipulation of MoSe2/layered microporous carbon heterostructure anode (MoSe2@LMC-1.5) and amorphous microporous carbon cathode (LMC) by using maize stalks precursor. The MoC bond formed on the interface of MoSe2 and LMC favors electron and Li-ion transfer in the composite. The amorphous microporous carbon substrate can not only ameliorate electrical conductivity of molybdenum selenide, but also tremendously suppress serious agglomeration of MoSe2 nanoparticles. The optimized mass ratio MoSe2@LMC-1.5 heterostructure remarkably improves the lithium ion storage performance. More importantly, in the potential window (0–4.5 V), LIC (MoSe2@LMC-1.5//LMC) device displays a higher energy/power output (maximum 108 Wh kg−1/221 W kg−1 and 68 Wh kg−1/2295 W kg−1) along with good cycling life.

A novel strategy for synthesizing the large size Co9S8@C nanosheets as anode for lithium-ion batteries with superior performance

The cobalt sulfides have become the focus materials on the lithium ion batteries application in which the Co9S8 with the nanosheet structure is the promising candidate for anode material in high-energy and high-power lithium ion batteries. By introducing a novel strategy with the organic-inorganic hybrid Co9S8-DETA (DETA=Diethylenetriamine) as the precursor, the large size Co9S8@C nanosheets have been successfully prepared via a calcination process. Due to uniform two-dimensional structure of Co9S8 and the amorphous carbon layer coating, the as-prepared Co9S8@C nanosheets exhibited excellent lithium ion storage performance as an anode material. The reversible capacity could be retained at 595 mAh g−1 after 160 cycles at 0.2 A g−1. The excellent performances of this nanocomposite offer numerous opportunities for other sulfides as a new anode in lithium ion batteries.

Sodium carboxymethylcellulose induced engineering a porous carbon and graphene immobilized magnetite composite for lithium-ion storage

Immobilizing nanosized electrochemically active materials with supportive carbonaceous framework usually brings in improved lithium-ion storage performance. In this work, magnetite nanoparticles (Fe3O4) are stabilized by both porous carbon domains (PC) and reduced graphene oxide sheets (RGO) to form a hierarchical composite (Fe3O4@PC/RGO) via a straightforward approach. The PC confined iron nanoparticle intermediate sample (Fe@PC) was first fabricated, where sodium carboxymethylcellulose (Na-CMC) was employed not only as a cross-linker to trap ferric ions for synthesizing a Fe-CMC precursor sample, but also as the carbon source for PC domains and iron source for Fe nanoparticles in a pyrolysis process. The final redox reaction between Fe@PC and few-layered graphene oxide (GO) sheets contributed to the formation of Fe3O4 nanoparticles with reduced size, avoiding any severe aggregation or excessive exposure. The Fe3O4@PC/RGO sample delivered a specific capacity of 522.2 mAh·g−1 under a current rate of 1000 mA·g−1 for 650 cycles. The engineered Fe@PC and Fe3O4@PC/RGO samples have good prospects for application in wider fields.

Zn-doped Tin monoxide nanobelt induced engineering a graphene and CNT supported Zn-doped Tin dioxide composite for Lithium-ion storage

In this work, a rapid coprecipitation reaction is developed to obtain nano-sized Zn-doped tin oxide samples (Zn-SnO-II or Zn-SnO2-IV) for the first time by simply mixing tin ion (Sn2+ or Sn4+) and zinc ion (Zn2+) containing salts in a mild aqueous condition. Characterization results illustrate the Zn-SnO-II sample is constituted by an overwhelming quantity of Zn-doped SnO nanobelts and a small quantity of Zn-doped SnO2 nanoparticles. The redox reaction between the Sn2+ ions from the Zn-SnO-II sample and the surface oxygen-containing functional groups from functionalized carbon nanotube (F-CNT) and graphene oxide (GO) leads to the formation of the final Zn-SnO2/CNT@RGO composites. As an anode active material for lithium-ion batteries, the Zn-SnO2/CNT@RGO product showed superior electrochemical performance than the controlled Zn-SnO2/CNT and Zn-SnO2/RGO samples, which had a high gravimetric capacity of 901.3 mAh·g−1 at a high charge and discharge current of 1000 mA·g−1 after 300 cycles and excellent rate capability. The reaction mechanism for the successful synthesis of the Zn-doped tin oxide samples has been proposed, and the insight into the outstanding lithium-ion storage performance for the Zn-SnO2/CNT@RGO composite has been revealed. The synthetic processes for both the Zn-doped tin oxides and derived carbon supported composites are straightforward and involve no harsh conditions nor complicated treatment, which have good potential for massive production and application in wider fields.

A high-performance electrochromic battery based on complementary Prussian white/Li4Ti5O12 thin film electrodes

Electrochromic energy storage devices (EESDs) have a wide range of applications from static displays to building windows. However, it is a great challenge to assemble EESDs with both high performance of energy storage and electrochromism. In this work, we design a multifunctional EESD composed of a Li4Ti5O12 and a Prussian white. Li4Ti5O12 (E = 1.55 V vs Li/Li+) film with excellent lithium-ion storage performance is used as the anode, and Prussian white film (E = 3.2 V vs Li/Li+) as the cathode. Thanks to the complementary electrochromic behavior, the suitable redox voltage gap, and the intrinsic electrochemical stability of Li4Ti5O12 film and Prussian white film, the as-assembled EESD exhibits excellent electrochromic performances including broad optical modulation (55.3% at 529 nm), high coloration efficiency (170.1 cm2 C−1), and long-term cycling stability (retention of 95.8% of initial optical modulation after 1000 cycles). And the EESD shows high energy density of 127.2 mWh cm−2 and exceptionally high power density of 24 mW cm−2. This EESD with an output voltage of 1.5 V and Coulombic efficiency of 98.8% is promising for applications of electrochromic smart windows and static displays to significantly reduce their energy consumption.

Graphite-like poly benzene networks (g-C6H3): Wurtz synthesis, structural characterization and electrochemical performance

Graphite-like poly benzene networks with benzene rings as building units (BUs) are prepared by the Wurtz reaction of 1,3,5-Trichlorobenzene with sodium at 380 °C in stainless steel autoclaves for the first time. The structural characteristics and electrochemical performances as anode materials in Lithium ion batteries of the as-prepared samples are then studied. Among them, structural characteristics test results unveil that the as-prepared samples possess graphite-like feature even though with poor crystallinity. In lithium ion storage performance tests, the sample PB-380 shows relatively higher reversible capacities of 573.7 mA h g−1 than that of sample PB-280, PB-480 and even graphite owing to the unique porous structure with benzene rings as building units. In addition, the influence of heat treatment temperature on structural characteristics, morphology and electrochemical performances of the key sample PB-380 are also studied. And it turns out that the structural rearrangement occurs in accompany with the removal of C, H atoms as heat treatment temperature increases.

Vertical-aligned Ni/NiO core–shell nanotube arrays with high performance for pseudocapacitance and lithium ion storage

Vertical-aligned Ni/NiO core–shell nanotube arrays with high performance for pseudocapacitance and lithium ion storage

Defect Engineering to Boost the Lithium-Ion Storage Performance of Ti3C2Tx MXene Induced by Plasma-Assisted Mechanochemistry

Defect Engineering to Boost the Lithium-Ion Storage Performance of Ti₃C₂T<i>_x</i> MXene Induced by Plasma-Assisted Mechanochemistry