High lithium storage in micrometre sized mesoporous spherical self-assembly of anatase titania nanospheres and carbon

Das, Shyamal; Darmakolla, Srikarrao; Bhattacharyya, Aninda J.

doi:10.1039/b919139a

Cited by 90 publications

(118 citation statements)

References 42 publications

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“…With a single alkyltrimethyl ammonium surfactant, mesopore diameters in the calcined materials tend to be small (2.3-4 nm), but if a mixture of these cationic surfactants is used, a broader mesopore size distribution with a larger average mesopore diameter is obtained (3-7 nm). [ 24 ] Somewhat larger mesopores were also obtained in the case of a synthesis of mesoporous anatase TiO 2 using C 8 -C 16 TA + cationic surfactants, where pore sizes increased from 5.7 to 7.0 nm with increasing chain length and surface areas followed a similar trend. [ 17 ] A more complex mixture of didodecyldimethylammonium bromide, hexane or tetradecane, and water was used in another synthesis of mesoporous anatase TiO 2 .…”

Section: Hard Templatingmentioning

confidence: 67%

Porous Electrode Materials for Lithium‐Ion Batteries – How to Prepare Them and What Makes Them Special

Qian

Stein

2012

Advanced Energy Materials

615

458

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Numerous benefits of porous electrode materials for lithium ion batteries (LIBs) have been demonstrated, including examples of higher rate capabilities, better cycle lives, and sometimes greater gravimetric capacities at a given rate compared to nonporous bulk materials. These properties promise advantages of porous electrode materials for LIBs in electric and hybrid electric vehicles, portable electronic devices, and stationary electrical energy storage. This review highlights methods of synthesizing porous electrode materials by templating and template‐free methods and discusses how the structural features of porous electrodes influence their electrochemical properties. A section on electrochemical properties of porous electrodes provides examples that illustrate the influence of pore and wall architecture and interconnectivity, surface area, particle morphology, and nanocomposite formation on the utilization of the electrode materials, specific capacities, rate capabilities, and structural stability during lithiation and delithiation processes. Recent applications of porous solids as components for three‐dimensionally interpenetrating battery architectures are also described.

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Section: Hard Templatingmentioning

confidence: 67%

Porous Electrode Materials for Lithium‐Ion Batteries – How to Prepare Them and What Makes Them Special

Qian

Stein

2012

Advanced Energy Materials

615

458

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“…19,20 Anatase TiO 2 is known to be a electrochemically active with a capacity of about 0.6 lithium ion in Li x TiO 2 at 1.78 V vs Li/Li + . TiO 2 −B is the least dense polymorph of TiO 2 , and has a theoretical capacity of 335 mA h g −1 .…”

Section: ■ Introductionmentioning

confidence: 99%

“…19,20 Anatase TiO 2 is known to be a electrochemically active with a capacity of about 0.6 lithium ion in Li 36,37 or noble metals (such as Ag), 38 or oxides (such as RuO 2 ). 39 Although noble metals and oxides could improve electronic conductivities, they do increase the cost of the active materials and reduce the weight fraction of active materials.…”

Section: ■ Introductionmentioning

confidence: 99%

Three-Dimensional Coherent Titania–Mesoporous Carbon Nanocomposite and Its Lithium-Ion Storage Properties

Shen

Uchaker

Cheng

et al. 2012

ACS Appl. Mater. Interfaces

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Mesoporous, micro/nanosized TiO 2 /C composites with uniformly dispersed TiO 2 nanoparticles embedded in a carbon matrix have been rationally designed and synthesized. In brief, TiO 2 precursor was infiltrated into the channels of surfaceoxidized mesoporous carbon (CMK-3) by means of electrostatic interaction, followed by in situ hydrolysis and growth of TiO 2 nanocrystallites, resulting in ultrafine TiO 2 nanoparticle confined inside the channels of mesopores carbon. ■ INTRODUCTIONLithium ion batteries (LIBs) have been regarded as one of the most promising candidates for applications in electric and hybrid vehicles with the potential to save oil and reduce CO 2 emissions, although they still suffer from low power density and safety concerns. 1−4 Conventional graphitic carbons used as anodes in commercial LIBs exhibits poor rate performance induced by its low Li diffusion coefficient. 5 Because of the lower operating voltage, solid-electrolyte interface (SEI) film and dendritic lithium are easily formed on the surface of graphite anode, which would cause serious safety issues and poor cycle life. 6−10 The commercial LIBs are inadequate to meet high power applications, advanced materials with better safety and high rate capability are critical for next-generation LIBs.Titanium-based compounds are promising candidates as alternative materials to carbonaceous anodes, because of not only its structural characteristics and special surface activity but also its low cost, safety, and environmental benignity. 11−18 Typically, the Li + insertion/extraction reaction for TiO 2 polymorphs occurs in the potential range of 1.4−1.8 V vs Li/ Li + , according to the following reactionBecause of low packing density, anatase (density, ρ = 3.89 g cm −3 ) and TiO 2 −B (ρ = 3.73 g cm −3 ) phases show higher lithium storage capacity as compared to densely packed brookite (ρ = 4.13 g cm −3 ) and rutile (ρ = 4.25 g cm −3 ) phases, both anatase TiO 2 and TiO 2 −B have been extensively investigated as potential alternative anode material for LIBs. 19,20 Anatase TiO 2 is known to be a electrochemically active with a capacity of about 0.6 lithium ion in Li x TiO 2 at 1.78 V vs Li/Li + . TiO 2 −B is the least dense polymorph of TiO 2 , and has a theoretical capacity of 335 mA h g −1 . TiO 2 −B has an open structure with freely accessible channels for Li-ion transport perpendicular to the (010) Unfortunately, the rate performance of bulk titania and Li 4 Ti 5 O 12 material is greatly limited due to the poor electronic and ionic conductivity, which constitutes a major obstacle for

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“…There are reports of the fast synthesis of mesoporous TiO2 within several hours, but the products are aggregated [26][27][28], amorphous [29], uneven [30] or in bulk [31,32]. Although mesoporous hollow TiO2 spheres have been intensively investigated [11,33,34], their low density/tap density can lead to a low volumetric performance.…”

Section: Introductionmentioning

confidence: 99%

Fast synthesis of uniform mesoporous titania submicrospheres with high tap densities for high-volumetric performance Li-ion batteries

et al. 2017

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High-tap density electrode materials are greatly desired for Li-ion batteries with high volumetric capacities to fulfill the growing demands of electric vehicles and portable smart devices. TiO2, which is one of the most attractive anode materials, is limited in their application for Li-ion batteries because of its low tap density (usually <1 g cm −3 ) and volumetric capacity. Herein, we report uniform mesoporous TiO2 submicrospheres with a tap density as high as 1.62 g cm −3 as a promising anode material. Even with a high mass loading of 24 mg cm −2 , the TiO2 submicrospheres have impressive volumetric capacities that are more than double those of their counterparts. Moreover, they can be synthesized with 100% yield and within a reaction time of~6 h by optimizing the experimental conditions and formation mechanism, exhibiting potential for large-scale production for industrial applications. Other mesoporous anode materials, i.e., hightap density mesoporous Li4Ti5O12 submicrospheres, are fabricated using the generalized method. We believe that our work provides a significant reference for the industrial production of mesoporous materials for Li-ion batteries with a high volumetric performance.

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High lithium storage in micrometre sized mesoporous spherical self-assembly of anatase titania nanospheres and carbon

Cited by 90 publications

References 42 publications

Porous Electrode Materials for Lithium‐Ion Batteries – How to Prepare Them and What Makes Them Special

Porous Electrode Materials for Lithium‐Ion Batteries – How to Prepare Them and What Makes Them Special

Three-Dimensional Coherent Titania–Mesoporous Carbon Nanocomposite and Its Lithium-Ion Storage Properties

Fast synthesis of uniform mesoporous titania submicrospheres with high tap densities for high-volumetric performance Li-ion batteries

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