Li 4 Ti 5 O 12 /reduced graphene oxide composite as a high-rate anode material for lithium ion batteries

Cao, Ning; Wen, Lina; Song, Zhonghai; Meng, Wei; Qin, Xuda

doi:10.1016/j.electacta.2016.05.077

Cited by 32 publications

(7 citation statements)

References 41 publications

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“…After 1 h, LiOH•H 2 O (0.388 g) dissolved in distilled water (25 mL) was added dropwise and vigorously stirred for 3 h. The mixture was then transferred into a Teflon‐lined stainless autoclave and subjected to hydrothermal treatment at 180 °C for 12 h. After the reaction was completed, the product was filtered and washed with distilled water and ethanol. Then, the powder was dried in a vacuum oven overnight and finally treated at 750 °C for 12 h under Ar atmosphere …”

Section: Methodsmentioning

confidence: 99%

Flexible Lithium‐Ion Batteries with High Areal Capacity Enabled by Smart Conductive Textiles

Shin

Park

et al. 2018

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Increasing demand for flexible devices in various applications, such as smart watches, healthcare, and military applications, requires the development of flexible energy-storage devices, such as lithium-ion batteries (LIBs) with high flexibility and capacity. However, it is difficult to ensure high capacity and high flexibility simultaneously through conventional electrode preparation processes. Herein, smart conductive textiles are employed as current collectors for flexible LIBs owing to their inherent flexibility, fibrous network, rough surface for better adhesion, and electrical conductivity. Conductivity and flexibility are further enhanced by nanosizing lithium titanate oxide (LTO) and lithium iron phosphate (LFP) active materials, and hybridizing them with a flexible 2D graphene template. The resulting LTO/LFP full cells demonstrate high areal capacity and flexibility with tolerance to mechanical fatigue. The battery achieves a capacity of 1.2 mA h cm while showing excellent flexibility. The cells demonstrate stable open circuit voltage retention under repeated flexing for 1000 times at a bending radius of 10 mm. The discharge capacity of the unflexed battery is retained in cells subjected to bending for 100 times at bending radii of 30, 20, and 10 mm, respectively, confirming that the suggested electrode configuration successfully prevents structural damage (delamination or cracking) upon repeated deformation.

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Section: Methodsmentioning

confidence: 99%

Flexible Lithium‐Ion Batteries with High Areal Capacity Enabled by Smart Conductive Textiles

Shin

Park

et al. 2018

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“…The LVO@C sample has a much smaller R ct value than that of LVO, indicating that the LVO@C sample possesses a faster kinetics of Li + insertion/deinsertion. The lithium diffusion coefficient ( D ) can be obtained utilizing eq : where R is the gas constant, T is absolute temperature, A is the surface area of the electrode (1 cm 2 ), ,,− n is the number of electrons transferred in the reaction, F is Faraday’s constant, C is the molar concentration of lithium ions in LVO (9.8 × 10 –3 mol cm –3 ), and σ is the Warburg coefficient. The value of σ was determined from the slope by the fitting of Z re vs ω –1/2 in Figure b according to eq , where the values of D are 3.87 × 10 –15 for pristine LVO and 9.16 × 10 –13 cm 2 s –1 for LVO@C, respectively.…”

Section: Resultsmentioning

confidence: 99%

Three-Dimensional Porous Hierarchically Architectured Li₃VO₄ Anode Materials for High-Performance Lithium-Ion Batteries

Zhou

Zhao

Song

et al. 2018

ACS Appl. Energy Mater.

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In this work, a binder-free, self-supported, three-dimensional (3D), porous Li3VO4 (LVO) and the carbon-coated Li3VO4(LVO@C) anode materials are prepared on a Ni-foam disc by the electrostatic spray deposition technique. The deposited materials exhibit a unique morphology with sponge-like 3D porous hierarchical architecture. The novel structure can significantly enhance the surface area of the materials, relax the stress/strain of Li+ insertion/deinsertion, and obviously shorten the diffusion path of lithium ions in the charger/discharge process. The porous nickel-foam substrate can also provide an electric transport network and structural support to the electrode, resulting in very excellent rating and cycling performance. In addition, the coated carbon network can further facilitate the electric transport of the material. As a result, both electrodes show outstanding electrochemical properties, especially the LVO@C electrode. The discharge capacities of LVO@C are 508.8, 424.1, 405, 377.5, and 340.1 mA h g–1 at 0.5, 5, 10, 20, and 30 C, respectively, and the capacity can persist at 399 mA h g–1 without any capacity fading even after 1000 cycles at the current density of 10 C. The excellent properties make these LVO-based materials, especially the carbon-coated LVO composite, a promising anode candidate for the low-cost and high-performance LIBs.

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“…The Li 4 Ti 5 O 12 /N-doped rGO composite with a BET specific surface area of 35.8 m 2 g −1 demonstrated a specific discharge capacity of 117.8 mAh g −1 at 30C rate. The work by Cao et al [367] shows that LTO/rGO composite grown via one-pot way (hydrothermal process at 180 • C for 36 h) displays higher rate capacity and larger discharge capacity than the bare LTO sample. The small rGO ratio-containing composite (~6.2 wt%) delivered a reversible specific capacity of 196.4 mAh g −1 at 1C rate and good cycle ability with 98.1% retention after 100 cycles.…”

Section: Molybdenum-based Oxide Compositesmentioning

confidence: 99%

Nanostructured Graphene Oxide-Based Hybrids as Anodes for Lithium-Ion Batteries

Sehrawat

Abid

Islam

et al. 2020

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Presently, the negative electrodes of lithium-ion batteries (LIBs) are constituted by carbon-based materials, which exhibit a limited specific capacity 372 mAh g−1 associated with the cycle in the composition between C and LiC6. Therefore, many efforts are currently made towards the technological development of nanostructured graphene materials because of their extraordinary mechanical, electrical, and electrochemical properties. Recent progress on advanced hybrids based on graphene oxide (GO) and reduced graphene oxide (rGO) has demonstrated the synergistic effects between graphene and an electroactive material (silicon, germanium, metal oxides (MOx)) as electrode for electrochemical devices. In this review, attention is focused on advanced materials based on GO and rGO and their composites used as anode materials for lithium-ion batteries.

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Li 4 Ti 5 O 12 /reduced graphene oxide composite as a high-rate anode material for lithium ion batteries

Cited by 32 publications

References 41 publications

Flexible Lithium‐Ion Batteries with High Areal Capacity Enabled by Smart Conductive Textiles

Flexible Lithium‐Ion Batteries with High Areal Capacity Enabled by Smart Conductive Textiles

Three-Dimensional Porous Hierarchically Architectured Li₃VO₄ Anode Materials for High-Performance Lithium-Ion Batteries

Nanostructured Graphene Oxide-Based Hybrids as Anodes for Lithium-Ion Batteries

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Li 4 Ti 5 O 12 /reduced graphene oxide composite as a high-rate anode material for lithium ion batteries

Cited by 32 publications

References 41 publications

Flexible Lithium‐Ion Batteries with High Areal Capacity Enabled by Smart Conductive Textiles

Flexible Lithium‐Ion Batteries with High Areal Capacity Enabled by Smart Conductive Textiles

Three-Dimensional Porous Hierarchically Architectured Li3VO4 Anode Materials for High-Performance Lithium-Ion Batteries

Nanostructured Graphene Oxide-Based Hybrids as Anodes for Lithium-Ion Batteries

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Three-Dimensional Porous Hierarchically Architectured Li₃VO₄ Anode Materials for High-Performance Lithium-Ion Batteries