Sulfur and nitrogen-doped Li4Ti5O12/rGO as an anode material for advanced sodium-ion batteries

Liang, Kang; Huang, Xiaobing; Hong, Xianda; Liao, Yuanhong; Ren, Yurong; Wang, Haiyan

doi:10.1016/j.jallcom.2020.158190

Cited by 25 publications

(8 citation statements)

References 63 publications

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“…46 Liang et al discovered the satellite peaks in 529.9, 530.7, and 531.9 eV of the O 1s high-resolution spectrum and assigned it to Ti 4+ −O, Ti 3+ −O or C−O, and O−Ti−S bonds, respectively. 47,48 Zhang et al and Haetge et al also have reported that LTO and rGO were also combined by the Ti−O−C bond, which was consistent with the above analysis results. 49,50 In this paper, the LTO/rGO composite (conductive network) was successfully prepared by the hydrothermal method, and the microstructure was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer−Emmett−Teller (BET), XPS and transmission electron microscopy (TEM), respectively.…”

Section: Introductionsupporting

confidence: 86%

“…Meanwhile, in the high-resolution spectrum of O 1s, there were satellite peaks at 530.1, 531.4, and 532.9 eV, which were, respectively, attributed to Ti–O in the body, the −OH group on the surface, and the chemisorbed oxygen (such as H 2 O) . Liang et al discovered the satellite peaks in 529.9, 530.7, and 531.9 eV of the O 1s high-resolution spectrum and assigned it to Ti 4+ –O, Ti 3+ –O or C–O, and O–Ti–S bonds, respectively. , Zhang et al and Haetge et al also have reported that LTO and rGO were also combined by the Ti–O–C bond, which was consistent with the above analysis results. , …”

Section: Introductionmentioning

confidence: 99%

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Three-Dimensional Network Microstructure Design of the Li₄Ti₅O₁₂/rGO Nanocomposite as an Anode Material for High-Performance Lithium-Ion Batteries

Wang

Wei

et al. 2023

J. Phys. Chem. C

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At present, the wide commercial application of Li 4 Ti 5 O 12 (LTO) is limited as an anode for lithium-ion batteries because of its poor conductivity and lower rate performance. In this paper, LTO nanoparticles were embedded in a reduced graphene oxide (rGO) conductive network by an in situ electrostatic selfassembly effect using a simple hydrothermal reduction method. The microstructure and electrochemical performance of the LTO/ rGO composite were investigated. The highlighted results showed that LTO nanoparticles were combined with rGO nanosheets by a Ti−O−C covalent bond, which was more stable than other bonding methods. At the same time, the addition of rGO not only enriches the structure and increases the specific surface area but also effectively prevents the agglomeration of LTO. The higher conductivity of LTO nanoparticles was bestowed by the rGO three-dimensional (3D) network, causing structural stability and high electrochemical performance. The LTO/rGO composite has high first discharge capacity (643.9 mAh/g at 0.5C), remarkable rate performance (290 mAh/g at 10C), and excellent cycle stability (271.7 mAh/g after the 1000th cycle at 10C) when tested in a half battery. Furthermore, it has higher discharge capacity (181.8 mAh/g at 1C, the first Coulombic efficiency was 90.1%) and excellent cycle stability (142.8 mAh/g after 500 cycles at 20C) when assembled into a full battery as the anode with commercial LiFePO 4 (LFP) as the cathode. The lithium storage mechanism of the LTO/graphene composite was further discussed by first-principles calculations. With the addition of graphene to LTO, the electron transport ability was improved and the diffusion energy barrier was reduced. This made the composite expected to become a promising anode material for lithium-ion batteries.

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Section: Introductionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Network Microstructure Design of the Li₄Ti₅O₁₂/rGO Nanocomposite as an Anode Material for High-Performance Lithium-Ion Batteries

Wang

Wei

et al. 2023

J. Phys. Chem. C

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“…There are C═C bond stretching vibration peaks of aromatic hydrocarbon molecules at 1605 and 1439 cm −1 . The out‐of‐plane bending vibration peak at 1380 cm −1 corresponds to CS or CN bond 29,30 . The out‐of‐plane bending vibration peak of CO is between 1300 and 900 cm −1 31 .…”

Section: Resultsmentioning

confidence: 99%

High‐performance LiMn ₀ _. ₈ Fe ₀ _. ₂ PO ₄ /C cathode prepared by using the toluene‐soluble component of pitch as a carbon source

et al. 2021

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Summary The nanocrystalline material LiMn0.8Fe0.2PO4/C was prepared by the solvothermal method using the toluene‐soluble component of pitch or sucrose as a carbon source. The effects of carbon source types and contents, and the carbonization‐heating rate between 350°C and 500°C on the physicochemical and electrochemical properties of the obtained materials were investigated. When the carbonization heating rate was between 350°C and 500°C is 0.5°C·min−1, cathode TS‐200‐0.5 coated by 200 mg toluene‐soluble component of pitch showed the optimum electrochemical performance with discharge specific capacity of 156.4, 149.2, and 116.4 mAh·g−1 at 0.1, 1, and 5 C, respectively. After 150 cycles at 1 C, the specific discharge capacity was still 135.1 mAh·g−1, and the capacity retention rate was 92.7%. Compared with sucrose, the toluene‐soluble component of pitch is an aromatic compound, and its pyrolytic carbon has streamlined structure with high graphitization. Moreover, small amounts of sulfur and nitrogen doped exist in pyrolysis carbon of the toluene‐soluble component of pitch. Cathode TS‐200‐0.5 exhibits high ionic and electronic conductivity and stability.

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“…Among them, the carbon layer doped with heteroatoms depicts superior conductivity. Specially, the nitrogen-doped carbon layer can fruitfully generate defects and improve material’s conductivity, ,,− bringing about enhanced energy storage performance. Prussian blue analogue (PBA), a nitrogen-rich carbon-based material, could constitute a conductive network after heat treatment, which can significantly improve the conductivity, thus facilitating the electrode material’s electrochemical performance. , On the other hand, as we all know, TiO 2 is a promising anode with appealing characteristics, including cheap cost, good structural robustness, and negligible volume change due to its layered crystal structure. ,,− In comparison with conventional conductive coatings, it owns redox-active properties.…”

Section: Introductionmentioning

confidence: 99%

Interface-Driven Pseudocapacitance Endowing Sandwiched CoSe₂/N-Doped Carbon/TiO₂ Microcubes with Ultra-Stable Sodium Storage and Long-Term Cycling Stability

Zhao

Liang

et al. 2021

ACS Appl. Mater. Interfaces

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Cobalt diselenide (CoSe2) has drawn great concern as an anode material for sodium-ion batteries due to its considerable theoretical capacity. Nevertheless, the poor cycling stability and rate performance still impede its practical implantation. Here, CoSe2/nitrogen-doped carbon-skeleton hybrid microcubes with a TiO2 layer (denoted as TNC-CoSe2) are favorably prepared via a facile template-engaged strategy, in which a TiO2-coated Prussian blue analogue of Co3[Co(CN)6]2 is used as a new precursor accompanied with a selenization procedure. Such structures can concurrently boost ion and electron diffusion kinetics and inhibit the structural degradation during cycling through the close contact between the TiO2 layer and NC-CoSe2. Besides, this hybrid structure promotes the superior Na-ion intercalation pseudocapacitance due to the well-designed interfaces. The as-prepared TNC-CoSe2 microcubes exhibit a superior cycling capability (511 mA h g–1 at 0.2 A g–1 after 200 cycles) and long cycling life (456 mA h g–1 at 6.4 A g–1 for 6000 cycles with a retention of 92.7%). Coupled with a sodium vanadium fluorophosphate (Na3V2(PO4)2F3)@C cathode, this assembled full cell displays a specific capacity of 281 mA h g–1 at 0.2 A g–1 for 100 cycles. This work can be potentially used to improve other metal selenide-based anodes for rechargeable batteries.

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Sulfur and nitrogen-doped Li4Ti5O12/rGO as an anode material for advanced sodium-ion batteries

Cited by 25 publications

References 63 publications

Three-Dimensional Network Microstructure Design of the Li₄Ti₅O₁₂/rGO Nanocomposite as an Anode Material for High-Performance Lithium-Ion Batteries

Three-Dimensional Network Microstructure Design of the Li₄Ti₅O₁₂/rGO Nanocomposite as an Anode Material for High-Performance Lithium-Ion Batteries

High‐performance LiMn ₀ _. ₈ Fe ₀ _. ₂ PO ₄ /C cathode prepared by using the toluene‐soluble component of pitch as a carbon source

Interface-Driven Pseudocapacitance Endowing Sandwiched CoSe₂/N-Doped Carbon/TiO₂ Microcubes with Ultra-Stable Sodium Storage and Long-Term Cycling Stability

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Sulfur and nitrogen-doped Li4Ti5O12/rGO as an anode material for advanced sodium-ion batteries

Cited by 25 publications

References 63 publications

Three-Dimensional Network Microstructure Design of the Li4Ti5O12/rGO Nanocomposite as an Anode Material for High-Performance Lithium-Ion Batteries

Three-Dimensional Network Microstructure Design of the Li4Ti5O12/rGO Nanocomposite as an Anode Material for High-Performance Lithium-Ion Batteries

High‐performance LiMn 0 . 8 Fe 0 . 2 PO 4 /C cathode prepared by using the toluene‐soluble component of pitch as a carbon source

Interface-Driven Pseudocapacitance Endowing Sandwiched CoSe2/N-Doped Carbon/TiO2 Microcubes with Ultra-Stable Sodium Storage and Long-Term Cycling Stability

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Three-Dimensional Network Microstructure Design of the Li₄Ti₅O₁₂/rGO Nanocomposite as an Anode Material for High-Performance Lithium-Ion Batteries

Three-Dimensional Network Microstructure Design of the Li₄Ti₅O₁₂/rGO Nanocomposite as an Anode Material for High-Performance Lithium-Ion Batteries

High‐performance LiMn ₀ _. ₈ Fe ₀ _. ₂ PO ₄ /C cathode prepared by using the toluene‐soluble component of pitch as a carbon source

Interface-Driven Pseudocapacitance Endowing Sandwiched CoSe₂/N-Doped Carbon/TiO₂ Microcubes with Ultra-Stable Sodium Storage and Long-Term Cycling Stability