Surface Engineering and Design Strategy for Surface‐Amorphized TiO<sub>2</sub>@Graphene Hybrids for High Power Li‐Ion Battery Electrodes

Zhou, Tengfei; Zheng, Yang; Gao, Hong; Min, Shudi; Li, Sean; Liu, Huan; Guo, Zaiping

doi:10.1002/advs.201500027

Cited by 183 publications

(105 citation statements)

References 28 publications

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“…Ultrathin 2D materials have been explored for photocatalysis due to their intriguing properties including large interlayer space, ultrahigh surface area, and tunable electronic properties ,. In particular, the open surface potentially provide additional shortened paths for electric transport, while the atomic defects induced by oxygen vacancies trigger unexpected changes in electronic states, consequently affording higher charge mobility . For example, Yi Xie's group for the first time demonstrated that ultrathin BiOCl nanosheets could enhance the photocatalytic degradation of organic dyes due to effective separation of photoinduced electron‐hole pairs .…”

Section: Figurementioning

confidence: 99%

Ultrathin Bi₂MoO₆ Nanosheets for Photocatalysis: Performance Enhancement by Atomic Interfacial Engineering

Huang

et al. 2018

ChemistrySelect

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Atomically thin two‐dimensional semiconductors provide an ideal platform to establish clear structure‐property relationships in the field of photocatalysis. Herein, we fabricated the atomically thin Bi2MoO6 nanosheets by a facile and scalable wet‐chemical synthesis approach. Oxygen vacancies were inevitably induced into the nanosheets as the thickness of the nanosheets exposed interior atoms, which are clearly identified by X‐ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) spectra. More intriguingly, the oxygen vacancies formed on the open interfaces could enhance charge transport, further improving the photocatalytic performance. Benefiting from the large surface areas and increased visible light absorption, the present atomically thin Bi2MoO6 nanosheets display extraordinary high‐performance of photocatalytic degradation of phenol and cycling stability. More importantly, we believe that this achievement in ultrathin two‐dimensional material (atomically thin Bi2MoO6 nanosheets) could bring new insights into designing high‐performance photocatalysts.

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Section: Figurementioning

confidence: 99%

Ultrathin Bi₂MoO₆ Nanosheets for Photocatalysis: Performance Enhancement by Atomic Interfacial Engineering

Huang

et al. 2018

ChemistrySelect

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“…To mitigate this issue, doping of a nonmetal element such as F, S, or N into TiO 2 has shown improved performance . The improvement is generally attributed to structural modulation rather than surface functionalization, although surface functionalization has been proven a key approach in the realization of high electrochemical activity …”

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confidence: 99%

Boosting Sodium Storage in TiO₂ Nanotube Arrays through Surface Phosphorylation

et al. 2018

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Sodium-ion batteries (SIBs) offer a promise of a scalable, low-cost, and environmentally benign means of renewable energy storage. However, the low capacity and poor rate capability of anode materials present an unavoidable challenge. In this work, it is demonstrated that surface phosphorylated TiO nanotube arrays grown on Ti substrate can be efficient anode materials for SIBs. Fabrication of the phosphorylated nanoarray film is based on the electrochemical anodization of Ti metal in NH F solution and subsequent phosphorylation using sodium hypophosphite. The phosphorylated TiO nanotube arrays afford a reversible capacity of 334 mA h g at 67 mA g , a superior rate capability of 147 mA h g at 3350 mA g , and a stable cycle performance up to 1000 cycles. In situ X-ray diffraction and transmission electron microscopy reveal the near-zero strain response and robust mechanical behavior of the TiO host upon (de)sodiation, suggesting its excellent structural stability in the Na storage application.

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“…Li 4 Ti 5 O 12 has been widely studied in recent years, owing to its high discharge voltage platform (1.5 V),l ong cycle life, and excellent thermals tability. [4][5][6] Especially,t he high discharge voltage effectively restricts the formation of SEI film to avoid potentials ecurity issues. However,l ow theoretical capacity (175 mAh g À1 )s everelyl imits its practical application.…”

Section: Introductionmentioning

confidence: 99%

Hollow TiNb₂O₇@C Spheres with Superior Rate Capability and Excellent Cycle Performance as Anode Material for Lithium‐Ion Batteries

Zhu

Che

2018

Chemistry A European J

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TiNb O , with high charge/discharge voltage (1.65 V), long life span, and excellent reversibility has become a new anode material for lithium ion batteries in recent years. However, the inherent poor electronic conductivity strictly limits its practical applications. Herein, we report for the first time hollow TiNb O @C spheres, with carbon spheres as sacrificial template. The special hollow structure can effectively relieve the volume expansion during the repeated process of charging/discharging. The conductivity of hollow TiNb O spheres can be greatly improved by the carbon layers uniformly coated outside the surface of TiNb O spheres. Besides, the particle aggregation can be conspicuously suppressed by the uniformly coated carbon layers. As a result, hollow TiNb O @C spheres show a prominent charge/discharge capacity of 282.6/283.8 mAh g after 100 cycles at 0.25 C (1 C=388 mA g ), revealing the excellent cycle performance and high reversible capacity. Meanwhile, the charge/discharge capacity of 157.5 and 157.9 mAh g can be maintained at 10 C after 10 cycles. The facial synthetic method can be extended to prepare various materials with volume expansion during repeated charging/discharging process.

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Surface Engineering and Design Strategy for Surface‐Amorphized TiO₂@Graphene Hybrids for High Power Li‐Ion Battery Electrodes

Cited by 183 publications

References 28 publications

Ultrathin Bi₂MoO₆ Nanosheets for Photocatalysis: Performance Enhancement by Atomic Interfacial Engineering

Ultrathin Bi₂MoO₆ Nanosheets for Photocatalysis: Performance Enhancement by Atomic Interfacial Engineering

Boosting Sodium Storage in TiO₂ Nanotube Arrays through Surface Phosphorylation

Hollow TiNb₂O₇@C Spheres with Superior Rate Capability and Excellent Cycle Performance as Anode Material for Lithium‐Ion Batteries

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Surface Engineering and Design Strategy for Surface‐Amorphized TiO2@Graphene Hybrids for High Power Li‐Ion Battery Electrodes

Cited by 183 publications

References 28 publications

Ultrathin Bi2MoO6 Nanosheets for Photocatalysis: Performance Enhancement by Atomic Interfacial Engineering

Ultrathin Bi2MoO6 Nanosheets for Photocatalysis: Performance Enhancement by Atomic Interfacial Engineering

Boosting Sodium Storage in TiO2 Nanotube Arrays through Surface Phosphorylation

Hollow TiNb2O7@C Spheres with Superior Rate Capability and Excellent Cycle Performance as Anode Material for Lithium‐Ion Batteries

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Surface Engineering and Design Strategy for Surface‐Amorphized TiO₂@Graphene Hybrids for High Power Li‐Ion Battery Electrodes

Ultrathin Bi₂MoO₆ Nanosheets for Photocatalysis: Performance Enhancement by Atomic Interfacial Engineering

Ultrathin Bi₂MoO₆ Nanosheets for Photocatalysis: Performance Enhancement by Atomic Interfacial Engineering

Boosting Sodium Storage in TiO₂ Nanotube Arrays through Surface Phosphorylation

Hollow TiNb₂O₇@C Spheres with Superior Rate Capability and Excellent Cycle Performance as Anode Material for Lithium‐Ion Batteries