High-performance Li-ion Battery Anodes Research Articles

Rb4Li2TiOGe4O12: a novel high-performance titanyl germanate anode for Li-ion batteries

A polar polyanionic germanate Rb4Li2TiOGe4O12 was proposed as a new high-performance anode for Li-ion batteries. It has balanced electrochemical properties with higher specific capacity and lower operating voltage, among the titanyl-based anodes.

Ag nanoparticle modified porous Si microspheres as high-performance anodes for Li-ion batteries.

This study aimed to address the challenges associated with silicon (Si) anode materials in Li-ion batteries, such as their large volume effect and poor electrical conductivity. To overcome these limitations, a novel composite microsphere called pSi/Ag was developed using quartz waste through a combination of high-energy ball-milling, spray drying, and magnesiothermic reduction techniques. The morphology and structure of the pSi/Ag composite were thoroughly characterized using various methods, including X-ray diffraction, field-emission scanning electron microscopy, and transmission electron microscopy. The results revealed that the Ag nanoparticles were uniformly dispersed within the porous micron-sized Si sphere particles, leading to enhanced electrochemical performance compared to pure porous silicon that did not undergo the spray drying process. The use of micron-sized Si prevented the excessive formation of the solid electrolyte interphase film, and the pSi/Ag-5 anode, prepared with 5 wt% AgNO3 as a precursor, demonstrated an impressive initial Coulombic efficiency of 92.8%. Moreover, a high specific capacity of 1251.4 mA h g-1 over 300 cycles at a current density of 4000 mA g-1 was attributed to the improved conductivity provided by the Ag nanoparticles in the Si matrix. The straightforward synthesis method employed in this study to produce pSi/Ag presents a promising approach for the future development of high-performance silicon anodes in Li-ion batteries.

Graphene based magnetite carbon nanofiber composites as anodes for high-performance Li-ion batteries

For energy storage applications, highly flexible free-standing electrodes are ideal for the fabrication of electrochemical cells.

Rational Design of Cross-Linked N-Doped C-Sn Nanofibers as Free Standing Electrodes towards High-Performance Li-Ion Battery Anodes

Rational Design of Cross-Linked N-Doped C-Sn Nanofibers as Free Standing Electrodes towards High-Performance Li-Ion Battery Anodes

Solution combustion synthesis of Fe3O4/reduced graphene oxide nanocomposite powders as high-performance anodes for Li-ion batteries

Solution combustion synthesis of Fe3O4/reduced graphene oxide nanocomposite powders as high-performance anodes for Li-ion batteries

Li reaction pathways in Ge and high-performance Ge nanocomposite anodes for Li-ion batteries

Ge is a highly researched anode material for Li-ion batteries (LIBs) owing to its high theoretical Li storage capacity and higher electrical conductivity compared to that of Si. However, Li reaction pathways in Ge have not been definitively established due to the formation of various and complicated Li-Ge alloy phases during lithiation/delithiation. Evaluation of the Li storage characteristics of bulk and nanocrystalline Ge demonstrated that nanocrystalline Ge showed higher Li reversibility than bulk Ge. Various cutting-edge ex situ techniques were used to analyze nanocrystalline Ge, and the Li reaction pathways in Ge were thoroughly demonstrated. To enhance the electrochemical Li storage characteristics of Ge, a Ge-based nanocomposite, Ge/Al2O3/C, was synthesized via simple one-pot mechanical solid-state reduction using GeO2, Al, and C. Ge/Al2O3/C exhibited very stable cyclic behavior at a current density of 100 mA g−1 over 300 cycles (capacity retention after 300 cycles: ∼95 %). Moreover, Ge/Al2O3/C exhibited excellent rate capability with high reversible capacity and stable cyclic behavior at a high 1C-rate. The superior electrochemical performance of Ge/Al2O3/C was attributed to the nanoscale dimensions of Li-active nanocrystalline Ge (∼10 nm) and Li-inactive Al2O3 (∼12 nm) embedded uniformly in the amorphous carbon matrices. The size of nanocrystalline Ge in nanocomposite was consistently maintained during repeated cycles owing to the anti-agglomeration effect of the uniformly distributed Li-inactive Al2O3 and amorphous carbon matrices. We anticipate that the electrochemical Li reaction pathways in Ge and the resulting high-performance nanocomposite anodes will be highly useful in investigating high-performance Ge-based anodes for LIBs.

A Ga-Sn liquid alloy-encapsulated self-healing microcapsule as high-performance Li-ion battery anode

• A Ga-Sn liquid alloy-encapsulated microcapsule is developed as self-healing Li-ion battery anode. • The liquid alloy microcapsules are prepared by using an oil-in-water emulsion. • Liquid alloy-encapsulated microcapsules exhibit high capacity and rate-performance. • Promising applications of Ga-Sn liquid alloy-encapsulated microcapsules is achievable. Engineering emerging anodes for lithium-ion batteries is of great significance. Here, we develop a self-healing anode composing of Ga-Sn liquid alloy infilling in a microcapsule. The microcapsules are prepared by using an oil-in-water emulsion. Liquid state of the Ga-Sn alloy in microcapsules is able to reduce structural failure on the basis of a self-healing mechanism during long-term cycling; the voids of microcapsules alleviate volumetric change of Ga-Sn alloy upon charge–discharge; and carbon shell improves the conductivity. The liquid alloy-encapsulated microcapsule anode exhibits a capacity of 711.6 mA h g −1 after 500 cycles and an ultrahigh Coulombic efficiency of 99.9 %. Moreover, the microcapsules present a recoverable rate-performance. Those properties enable the self-healing Ga-Sn liquid alloy-encapsulated microcapsules developed here to have a good potential for practical applications.

CuO–Fe2O3 nanoparticles embedded onto reduced graphene oxide nanosheets: a high-performance nanocomposite anode for Li-ion battery

CuO–Fe2O3 nanoparticles embedded onto reduced graphene oxide nanosheets: a high-performance nanocomposite anode for Li-ion battery

Cake-like porous Fe3O4@C nanocomposite as high-performance anode for Li-ion battery

• Cake-like porous Fe 3 O 4 coated with a carbon layer were developed. • It involves a coprecipitation–etching/local oxidation–coating–calcination process. • The Fe 3 O 4 @C nanocakes exhibit superior electrochemical lithium storage property. • High performance is due to the porous nanocake structure and carbon coating. Lithium-ion batteries (LIBs) have been used as an energy-storage system. On the other hand, the electrode needs to be modified to increase the Li storage performance of the battery. In this research, cake-like porous Fe 3 O 4 coated with a carbon layer (Fe 3 O 4 @C nanocakes) has been prepared and further used in anode for LIBs. The synthesis route includes a coprecipitation–etching/local oxidation–coating–calcination process. As expected, the Fe 3 O 4 @C nanocakes exhibit superior electrochemical properties (reversible capacities of 605.4 mAh g −1 at 0.1 A g −1 over 100 cycles). A series of measurements show that the porous nanocake structure and carbon coating constructs a conducting network for Fe 3 O 4 nanoparticles and alleviates the volume change. More importantly, the Fe 3 O 4 @C nanocake anode exhibits excellent rate behavior (655.8 mAh g −1 at 1 A g −1 , 472.5 at 2 A g −1 ). In conclusion, the cake-like Fe 3 O 4 @C is proved to be a prospective electrode for LIBs with high specific capacities.

Crucial contact interface of Si@graphene anodes for high-performance Li-ion batteries

Despite their extremely high capacity (4200 mA h g−1), the practical application of silicon anodes is still frustrated by their poor cycling performance, resulting from severe volume changes and pulverization of the electrode material. Introducing graphene in silicon is an ideal approach for addressing these issues. Nevertheless, the large size difference between Si and graphene makes high-quality contact difficult to realize, which severely harms the electrochemical performance of Si/graphene composites. Herein, a unique Si@graphene layer structure (p-Si@GN) with an improved contact interface is fabricated by a facile high-pressure method, in which the surfaces of silicon particles are closely covered by graphene layers, restraining the volume changes from multiple angles. The superior structure of the layered p-Si@GN composite exhibits multiple desired features for high-performance Si-based anodes, such as high Li+ storage capacity resulting from high-capacity Si nanoparticles, outstanding electron conductivity due to the formation of a continuous graphene conductive network, and excellent structural stability due to the enhanced protective function of graphene layers with an improved contact interface. Due to these advantages, the p-Si@GN40 anode, prepared under 40 MPa pressure, exhibits a significantly improved capacity of 2096.9 mA h g−1 at a current density of 300 mA g−1, an enhanced rate capability of 706.4 mA h g−1 at 3000 mA g−1, and superior cycling performance with a high capacity retention of 82.6 % after 150 cycles.

Li-Compound Anodes: A Classification for High-Performance Li-Ion Battery Anodes.

Four main anode types are generally considered as typical anodes for Li-ion batteries (LIBs): Li-metal, carbon-based, alloy-based, and oxide-based anodes. Although they exhibit satisfactory electrochemical performance as LIB anodes, they cannot simultaneously satisfy all key requirements for LIB anodes: high reversible capacity, high initial Coulombic efficiency (ICE), long cycle life, fast rate capability, structural stability, and no safety concerns. Here, we suggest Li-compound anodes as a promising class of high-performance LIB anodes. Three binary (LiSn, Li2Sb, and LiBi) and three ternary (Li2ZnSb, Li5GeP3, and Li5SnP3) Li compounds were introduced as Li-compound anodes. LiSn and Li5SnP3 were selected and further modified into their nanocomposites by solid-state synthetic routes using carbon sources for high-performance LIB anodes. The Li-compound nanocomposite anodes exhibited excellent performance and simultaneously fulfilled all the key requirements for high-performance LIB anodes. Therefore, Li-compound anodes are expected to be a promising and innovative category of high-performance LIB anodes.

Electrochemical study of reduced graphene oxide@Zn2Ti3O8 nanocomposites as a superior anode for Li-ion battery

In this paper, a high-performance Li-ion battery anode, 2D reduced graphene oxide@Zn2Ti3O8 nanocomposite was successfully synthesized. In the mixing process, the porous Zn2Ti3O8 nanoplate and the reduced graphene oxide flakes were closely bonded by the electrostatic force, and then the heterojunction formed between them after 600 °C heat treatment in the N2 atmosphere. Due to the introduction of graphene, the electrochemical impedance of the composite is much reduced, and this two-dimensional heterostructure induced a large number of pseudocapacitance behaviors, which greatly increased the rate performance, cycling stability, and reversible capacity. In the long cycle performance tests at high current densities, the reduced graphene oxide@Zn2Ti3O8 composite can maintain stable capacities of 600 mAh g−1 at 1000 mA g-1and 265 mAh g−1 at 5000 mA g−1, exceeding all previous reports of Zn2Ti3O8 electrode. The excellent performance of the nanocomposite under high current density makes it a potential anode material for lithium-ion batteries.

Correction to “Confining Nano-GeS2 in Cross-linked Porous Carbon Networks for High-Performance and Flexible Li-Ion Battery Anodes”

ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to “Confining Nano-GeS2 in Cross-linked Porous Carbon Networks for High-Performance and Flexible Li-Ion Battery Anodes”Dong FengDong FengMore by Dong Fenghttps://orcid.org/0000-0002-8429-9024, Qi LiuQi LiuMore by Qi Liu, Zhongming LiZhongming LiMore by Zhongming Li, and Tianbiao Zeng*Tianbiao ZengMore by Tianbiao Zenghttps://orcid.org/0000-0002-7841-1841Cite this: ACS Appl. Energy Mater. 2022, 5, 7, 9225–9226Publication Date (Web):July 8, 2022Publication History Published online8 July 2022Published inissue 25 July 2022https://doi.org/10.1021/acsaem.2c01892Copyright © 2022 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views268Altmetric-Citations-LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (3 MB) Get e-Alerts Get e-Alerts

Progress of NiO-Based Anodes for High-Performance Li-Ion Batteries.

Rechargeable lithium-ion batteries (LIBs) are of great significance to the development of renewable energy. The traditional graphite anode is gradually unable to meet increasing demands for high energy density and power density due to its low theoretical capacity. NiO has gained considerable attention because of its high theoretical capacity, low toxicity, and stable chemical properties. This review summarizes the research progress of NiO-based nanomaterials in LIBs and centers on the electrochemical reaction mechanism, synthesis methods, and strategies for improving the electrochemical properties of NiO anodes. The results demonstrate that the electrochemical characteristics highly depend on the synthesis method, morphology, surface area, conductive substrate, etc. Compared with pure NiO, NiO-based composites including NiO/carbon-based materials and NiO/metal oxide often present higher capacity and cycle stability. Furthermore, challenges and future perspectives of NiO-based anodes are also discussed.

Ultra-fine Sb2S3 particles encapsulated in activated-carbon: A high-performance anode for Li-ion batteries

The low electronic conductivity and severe volume change hinder the commercialization of Sb2S3 anode, despite many efforts have been made to improve its electrochemical properties in the past decades. Many of these methods are complicated and different kinds of chemicals are required. Herein, a facile high-temperature melting method was employed to prepare high-performance Sb2S3 anode with nanosizing bulk natural stibnite and wrapping activated carbon. The activated carbon can provide nano-pores that absorb the molten Sb2S3. This structure can not only promote electronic conductivity but also provide accommodation for the volume change of Sb2S3 nanoparticles. More importantly, compared to other methods such as the hydrothermal method, the advantage of this method is that natural stibnite (95 wt% Sb2S3) was directly used as the Sb2S3 source without other synthetic or purification processes. Benefiting from these merits, the Sb2S3 composite anode exhibits good cyclic stability and excellent rate property, which delivers a high capacity of over 450 mAh g−1 even at a current density of 5 A g−1, proving that the Sb2S3 composite can serve as a promising anode for advanced lithium-ion batteries.

A facile electrospinning strategy for fibrous NixSy quantum dots @ N doped carbon nanofibers as high-performance Li-ion battery anodes

With the advantage of high theoretical capacities, nickel sulfides (NixSy) has become a kind of potential anode materials for high performance lithium-ion battery. Selecting an appropriate strategy to construct a stable structure for NixSy to confront the volume changes in the process of lithium storage is one of the meaningful topics. Here we propose a facile strategy to embed NixSy quantum dots into N-doped carbon nanofibers (NCNFs). The influence of the microstructure and crystal phase on lithium storage performance has been investigated systematically. The as-prepared fibrous NixSy quantum dots @ NCNFs expose excellent electrochemical performance and structure stability. Among them, the sample with the best performance can maintain a reversible capacity of 820.2 mAh g−1 after 300 cycles at a current density of 0.1 A g−1. More importantly, it also shows an appropriate result when applied to commercial lithium-ion battery devices. This work can provide a powerful reference for the further development of lithium-ion battery.

Synthesis of carbon nanotubes-supported porous silicon microparticles in low-temperature molten salt for high-performance Li-ion battery anodes

Synthesis of carbon nanotubes-supported porous silicon microparticles in low-temperature molten salt for high-performance Li-ion battery anodes

SnF2-Doped Cs4PbBr6 Glass Ceramic as a High-Performance Anode for Li-Ion Batteries

SnF₂-Doped Cs₄PbBr₆ Glass Ceramic as a High-Performance Anode for Li-Ion Batteries

Hierarchical conformal coating enables highly stable microparticle Si anodes for advanced Li-ion batteries

Microsized silicon powders have great potential for high capacity anode materials in next-generation lithium ion batteries, because of the high gravimetric and volumetric energy densities, ease of mass production and low costs. However, large volume change and consequently rapid capacity fading upon lithiation and delithiation prevent its practical applications. Herein, we demonstrate an effective hierarchical conformal coating strategy for high-performance microsized Si anodes. The Si-based composites consist of an amorphous Li-Si-O inner coating layer and a graphene outer encapsulation layer, which are prepared by coupling reactive milling with electrostatic self-assembly. This unique hierarchical conformal coating structure not only strengthens the mechanical property (31.8 GPa for the elastic modulus) and promotes the ionic diffusion (2.03 × 10−10 cm2 s−1) of Si anode, but also effectively stabilizes the electrode/electrolyte interfaces and increases the electronic conductivity. As a result, a high reversible capacity (1450 mA⋅h g−1 at 0.1 A g−1), good cycling stability (97.7% of capacity retention from the 2nd to the 310th cycle at 0.5 A g−1), and high rate capability (703 mA⋅h g−1 at 5 A g−1) have been successfully achieved. These findings provide new insights into the improvement of electrochemical properties of microsized Si composite anodes for high-performance Li-ion batteries.

Ultra-small ZnS quantum dots embedded in N-doped carbon matrix for high-performance Li-ion battery anode

We report zinc sulfide (ZnS) quantum dots composed of three different polymorphs (pure zinc blende, pure wurtzite, and poly-type (zinc blende/wurtzite)) uniformly embedded in an N-doped carbon matrix as a potential electrode material for anode applications in lithium-ion batteries (LIBs), for the first time. The ZnS polymorph quantum dots with cubic and hexagonal lattices anchored onto a N-doped carbon matrix ([email protected]) electrode is prepared by a polyol-assisted pyro-synthesis technique. A combined operando XRD and ex-situ XAS analyses revealed that the electrochemical reaction mechanism in [email protected] was reversible and comprised of an insertion reaction followed by a conversion-cum-alloying reaction. Due to the structural property of the composite and its unique electrochemical behavior, the [email protected] electrode registers a reversible specific capacity as high as 800 mAhg−1 with a high initial energy round-trip efficiency of 83%, and better cycling stability and power. The results from this study can help in the production of high-performance electrode materials with unique structural and morphological composition using an efficient pyro-synthetic reaction for rechargeable battery applications.