Enhanced reversible lithium storage in a nanosize silicon/graphene composite

Chou, Shulei; Wang, Jiazhao; Choucair, Mohammad; Liu, Huan; Stride, John A.; Dou, Shi Xue

doi:10.1016/j.elecom.2009.12.024

Cited by 412 publications

(254 citation statements)

References 31 publications

Supporting

Mentioning

249

Contrasting

Unclassified

Order By: Relevance

“…For example, Wan's group has calculated that a reduction of diffusion length from 10 μm (the typical particle size of commercial electrode materials) to 100 nm, results in a decrease in the mean diffusion time from 5000 to 0.5 s [14]. Many reports have also demonstrated that smaller particles of electrode materials have shorter diffusion lengths for Li + , higher electrode/electrolyte contact areas, and better accommodation of the strain than common micron-sized materials [15][16][17][18][19].…”

Section: Resultsmentioning

confidence: 99%

LiMn2O4 microspheres: Synthesis, characterization and use as a cathode in lithium ion batteries

Xiao

2010

Nano Res.

105

View full text Add to dashboard Cite

Solid and hollow microspheres of LiMn 2 O 4 have been synthesized by lithiating MnCO 3 solid microspheres and MnO 2 hollow microspheres, respectively. The LiMn 2 O 4 solid microspheres and hollow microspheres had a similar size of about 1.5 μm, and the shell thickness of the hollow microspheres was only 100 nm. When used as a cathode material in lithium ion batteries, the hollow microspheres exhibited better rate capability than the solid microspheres. However, the tap density of the LiMn 2 O 4 solid microspheres (1.0 g/cm 3 ) was about four times that of the hollow microspheres (0.27 g/cm 3 ). The results show that controlling the particle size of LiMn 2 O 4 is very important in terms of its practical application as a cathode material, and LiMn 2 O 4 with moderate particle size may afford acceptable values of both rate capability and tap density.

show abstract

Section: Resultsmentioning

confidence: 99%

LiMn2O4 microspheres: Synthesis, characterization and use as a cathode in lithium ion batteries

Xiao

2010

Nano Res.

105

View full text Add to dashboard Cite

show abstract

“…In 2010, the further progression of graphene-based host structures (i.e., hollow GO spheres, [ 43 ] RGO, [ 37,39,[44][45][46][47][48][49][50] unzipped CNT, [ 51 ] bottom-up-synthesized graphene, [ 52 ] CVD-synthesized graphene [ 40 ] and N-doped graphene [ 40 ] ) only enabled limited progresses (Table 1 ). However, some major advances in understanding the Li-ion storage mechanism in different kinds of graphene were reported.…”

Section: Continuedmentioning

confidence: 99%

“…Alongside with the fi rst examples of Si-containing graphene composites, [ 38,41,52,118 ] few other electrochemical studies on graphene/Li 4 Ti 5 O 12 (i.e., RGO/LTO) hybrid [ 119 ] (where graphene was only used as conductive matrix, similarly to the graphene/TiO 2 composites previously mentioned), and graphene-containing composites (i.e., RGO/nitridated-TiO 2 , [ 120 ] RGO/SnO 2 , [ 49,50,121,122 ] arc-discharged graphene/SnO 2 [ 123 ] and RGO/SnSb, [ 124 ] hybrids) were performed in this period (Table 2 ). Unfortunately, except for the RGO/LTO hybrid [ 119 ] which showed an excellent stability at high current for more than 1300 cycles (maybe also due to the minimal RGO content, i.e., 1 wt%), none of the proposed systems overcame the previously mentioned drawbacks of graphene.…”

Section: Graphene-containing Materials As a Li-ion Hostsmentioning

confidence: 99%

Critical Insight into the Relentless Progression Toward Graphene and Graphene‐Containing Materials for Lithium‐Ion Battery Anodes

et al. 2016

View full text Add to dashboard Cite

that its extraordinary properties would enable revolutionary new technologies, which gave birth to the "graphene era". [ 3,4 ] Relying on this scenario, in 2013, the European Union launched the ¤1 billion "Graphene Flagship" project aimed to investigate the properties of this new form of carbon for various applications (e.g., electronics, sensors and energy storage devices), with the ambitious goal of guiding graphene from laboratories to commercial applications within a decade. [ 5,6 ] In the same period, the Chinese Government set up a similar investment to mass-produce graphene as thin fi lms (e.g., for touchscreen electrodes) and platelets (e.g., for use in batteries). [ 6 ] In the following years, hundreds of patents, mainly focused on manufacturing and application in energy storage, were fi led and the worldwide production of graphene and graphene-containing materials rapidly increased. Although a few Chinese industries claimed to already use graphene-containing materials for smartphone production, no revolutionary practical application relying on graphene has been yet developed. [ 6 ] Specifi cally with respect to the battery fi eld, a close analysis of the scientifi c literature reveals a struggle to meet the ambitious initial targets. A potential loss of focus from the fi nal application caused by hype and ease of publication on such a novel matter, together with the delivery of very misleading information [ 7,8 ] and erroneous statements [ 7 ] concerning the use of graphene in batteries are emerging as possible reasons of the ineffective graphene-era outburst. In this progress report, we do not focus on production and classifi cation of graphene and graphene-containing materials, which were already well reported in the past years. [ 3,[9][10][11] In contrast, due to the lack of an exhaustive analysis of the progression of the use of such materials in lithium-ion battery (LIB) anodes, we report here a critical evaluation of the most prominent research papers published from 2008 until the end of 2015. As shown in Figure 1 , three different stages of the graphene research in LIB anodes can be distinguished: a fi rst stationary phase between 2008 and 2010 where the lithium-ion storage properties of different graphene and graphene-containing materials were preliminarily explored, a second exponential stage, spanning from 2010 to 2014, where graphene and graphene-containing anode materials were broadly developed and investigated, and fi nally, a third phase, (i.e., starting from 2015), where the research seems to have approached a plateau. After Used as a bare active material or component in hybrids, graphene has been the subject of numerous studies in recent years. Indeed, from the fi rst report that appeared in late July 2008, almost 1600 papers were published as of the end 2015 that investigated the properties of graphene as an anode material for lithium-ion batteries. Although an impressive amount of data has been collected, a real advance in the fi eld still seems to be missing. In this framework, atten...

show abstract

“…The inactive Li 2 O matrix helps to buffer the volume change of the SnLix alloy and prevents Sn nanoparticles from being mechanically pulverized or disconnected in repeated charge/discharge processes [19][20][21][22]. However, the electrically insulating characteristics of the Li 2 O matrix formed in the first discharge can cause a problem of poor electronic conductivity in the electrode [10,23], and this problem can cause a severe deterioration in the rate capability of the electrode and gives a low efficiency in energy storage due to the large polarization [24].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, many researchers have focused on exploring new anode materials with higher energy and power density than existing electrodes [4][5][6][7][8]. Of these, elements such as Si and Sn that alloy with Li are attractive candidates for replacing graphite due to their exceptionally high theoretical capacities [9][10][11][12]. Because these materials can typically store more than one lithium ion per one metal atom through the alloying reaction [1,13], they are capable of delivering high energy.…”

Section: Introductionmentioning

confidence: 99%

SnO2/graphene composite with high lithium storage capability for lithium rechargeable batteries

et al. 2010

View full text Add to dashboard Cite

SnO 2 /graphene nanocomposites have been fabricated by a simple chemical method. In the fabrication process, the control of surface charge causes echinoid-like SnO 2 nanoparticles to be formed and uniformly decorated on the graphene. The electrostatic attraction between a graphene nanosheet (GNS) and the echinoid-like SnO 2 particles under controlled pH creates a unique nanostructure in which extremely small SnO 2 particles are uniformly dispersed on the GNS. The SnO 2 /graphene nanocomposite has been shown to perform as a high capacity anode with good cycling behavior in lithium rechargeable batteries. The anode retained a reversible capacity of 634 mA·h·g -1 with a coulombic efficiency of 98% after 50 cycles. The high reversibility can be attributed to the mechanical buffering by the GNS against the large volume change of SnO 2 during delithiation/lithiation reactions. Furthermore, the power capability is significantly enhanced due to the nanostructure, which enables facile electron transport through the GNS and fast delithiation/lithiation reactions within the echinoid-like nanoSnO 2 . The route suggested here for the fabrication of SnO 2 /graphene hybrid materials is a simple economical route for the preparation of other graphene-based hybrid materials which can be employed in many different fields.

show abstract

Enhanced reversible lithium storage in a nanosize silicon/graphene composite

Cited by 412 publications

References 31 publications

LiMn2O4 microspheres: Synthesis, characterization and use as a cathode in lithium ion batteries

LiMn2O4 microspheres: Synthesis, characterization and use as a cathode in lithium ion batteries

Critical Insight into the Relentless Progression Toward Graphene and Graphene‐Containing Materials for Lithium‐Ion Battery Anodes

SnO2/graphene composite with high lithium storage capability for lithium rechargeable batteries

Contact Info

Product

Resources

About