Crumpled Graphene-Encapsulated Si Nanoparticles for Lithium Ion Battery Anodes

Luo, Jiayan; Zhao, Xin; Wu, Jinsong; Jang, Hee Dong; Kung, Harold H.; Huang, Jiaxing

doi:10.1021/jz3006892

Cited by 457 publications

(410 citation statements)

References 44 publications

Supporting

Mentioning

403

Contrasting

Order By: Relevance

“…By searching the literature, we found that many other nanoparticles produced wrinkles on GO as well. 13,[30][31][32][33][34] Our own experiment also indicated that silica nanoparticles can produce very obvious wrinkling ( Figure S2A). On the other hand, if GO is dried by itself, no extensive wrinkling was observed ( Figure 2F).…”

mentioning

confidence: 70%

Evaporation induced wrinkling of graphene oxide at the nanoparticle interface

Wang

Liu

2015

Nanoscale

View full text Add to dashboard Cite

With the thickness of only a single atomic layer, graphene displays many interesting surface properties. A general observation is that wrinkles are formed on graphene oxide (GO) when it is dried in the presence of adsorbed inorganic nanoparticles. In this case, evaporation induced wrinkling is not an elastic deformation but is permanent. Understanding the nanoscale force of wrinkle formation is important for device fabrication and sensing. Herein, we employ surface functionalized gold nanoparticles (AuNPs) as a model system. All tested AuNPs induced wrinkling, including those capped by DNA, polymers and proteins. The size of AuNPs is less important compared to the property of solvent. Wrinkle formation is attributed to drying related capillary force acting on the GO surface, and a quantitative equation is derived. After drying, the adsorption affinity between GO and AuNPs is increased due to increased contact area.

show abstract

mentioning

confidence: 70%

Evaporation induced wrinkling of graphene oxide at the nanoparticle interface

Wang

Liu

2015

Nanoscale

View full text Add to dashboard Cite

show abstract

“…Regarding previously developed graphene-containing composites, many different semimetal-(e.g., Si [206][207][208][209] ), metal-(e.g., Sn [210][211][212][213] ) and metal-oxide-(e.g., NiO, [214][215][216] [ 225,226 ] or CoO [ 227,228 ] ) based graphene hybrids were further reported. However, despite some clever approaches to stabilize the structure of the active material (e.g., freeze-drying, [ 206 ] crumpling, [ 207 ] spin coating [ 209 ] or nanocabling [ 211 ] ), only few cases reported a successful minimization of the 1 st cycle irreversible capacity and improved delithiation voltage.…”

mentioning

confidence: 99%

“…However, despite some clever approaches to stabilize the structure of the active material (e.g., freeze-drying, [ 206 ] crumpling, [ 207 ] spin coating [ 209 ] or nanocabling [ 211 ] ), only few cases reported a successful minimization of the 1 st cycle irreversible capacity and improved delithiation voltage. [ 220,226 ] In 2013, new types of hybrids, such as graphene-containing metal sulfi des, [229][230][231][232][233][234][235][236] intermetallic compounds, [237][238][239] metallic stannate, [ 240,241 ] -germanate, [ 242,243 ] -tungstate, [ 244,245 ] -oxides, [ 246,247 ] germanium oxide, [ 248 ] lithium vanadate, [ 249 ] manganese ferrite [ 250 ] and cobalt carbonate [ 251 ] were introduced.…”

mentioning

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

“…Recently, CG has drawn increasing attention due to its threedimensional (3D) hollow structure and excellent stability in aqueous solutions. [25][26][27] Furthermore, due to its highly conductive nature and large specific surface area, the CG is a promising substrate for loading active materials into energy devices, that is, supercapacitors 24,28,29 and batteries, [30][31][32][33][34] and as a catalyst support in fuel cells. 23 As shown in Figure 1, the GO suspension was first mixed with precursors (titanium (IV) bis(ammonium lactato) dihydroxide and LiOH) and then nebulized to generate aerosol droplets, which flowed through a tube furnace.…”

Section: Results and Discussion Lto/cg Composite Synthesis Through Aementioning

confidence: 99%

One-step, continuous synthesis of a spherical Li4Ti5O12/graphene composite as an ultra-long cycle life lithium-ion battery anode

et al. 2015

View full text Add to dashboard Cite

We report, for the first time, a one-step, continuous synthesis of spherical lithium titanate (Li 4 Ti 5 O 12 , LTO)/graphene composites through direct aerosolization of a graphene oxide (GO) suspension mixed with Li and Ti precursors. The resulting crumpled graphene-sphere-supported LTO nanocrystals has a three-dimensional structure with a high electrical conductivity, a high surface area and good stability in electrolyte. The LTO/CG composite, as an anode in LIBs, exhibited excellent rate capability (for example, at a high current density of 5000 mA g − 1 it delivered 60% of the capacity obtained at 12.5 mA g − 1 ) and an outstanding cycling performance (a capacity retention of 88% after 5000 cycles at 1,250 mA g − 1 ). The one-step, continuous synthesis of the LTO/graphene composite offers a high-producing efficiency compared with conventional multi-step preparations, and can be generally applied for synthesizing lithium metal oxides/graphene (cathode or anode) materials for lithium-ion batteries. NPG Asia Materials (2015) 7, e224; doi:10.1038/am.2015.120; published online 6 November 2015 INTRODUCTION Lithium-ion batteries (LIBs) have a high-rate capacity and long cycle life, and thus are critical for many important applications, such as electric vehicles (EVs) and portable electronic devices. 1-3 The use of combustible graphite (especially in lithiated states) is highly risky in the application of EVs and hybrid EVs (HEVs); therefore, alternative anode materials with a higher power density, better stability, and higher safety performance are greatly needed and deserve greater scientific exploration.Compared with graphitic carbon, spinel lithium titanate Li 4 Ti 5 O 12 (LTO) exhibits a relatively high lithium insertion/extraction voltage of 1.55 V (vs Li + /Li), which prevents the formation of the solid electrolyte interphase (SEI) and suppresses lithium dendrite deposition on the surface of the anode (most electrolyte materials or solvents are reduced below 1 V), thereby greatly decreasing the short-circuit risk of the battery. [4][5][6][7][8] In addition, LTO possesses excellent Li ion insertion and removal reversibility with almost zero volume change during the charge/discharge process. 9,10 However, as demonstrated in previous studies, it is still a challenge to achieve good battery performance at high charge/discharge rates using LTO as the anode material because of the low electrical conductivity (o10 − 13 S cm − 1 ) of LTO,11,12 and thus there have been many efforts to improve the rate capability and the cycling performance of LTO-based batteries. Commonly applied strategies include engineering the proper LTO structure to reduce the transport path length of Li ions and enhancing the electrical conductivity by surface coating or forming composites with

show abstract

Crumpled Graphene-Encapsulated Si Nanoparticles for Lithium Ion Battery Anodes

Cited by 457 publications

References 44 publications

Evaporation induced wrinkling of graphene oxide at the nanoparticle interface

Evaporation induced wrinkling of graphene oxide at the nanoparticle interface

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

One-step, continuous synthesis of a spherical Li4Ti5O12/graphene composite as an ultra-long cycle life lithium-ion battery anode

Contact Info

Product

Resources

About