Pillar-free TiO2/Ti3C2 composite with expanded interlayer spacing for high-capacity sodium ion batteries

Wang, Peiyuan; Lu, Xiaoxuan; Boyjoo, Yash; Wei, Xiaorong; Zhang, Yonghui; Guo, Dongjie; Sun, Shumin; Liu, Jian

doi:10.1016/j.jpowsour.2020.227756

Cited by 66 publications

(40 citation statements)

References 44 publications

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“…As a result, the interlayer distance increased from 1.01 to 1.30 nm, as shown in Figure 20 (a) and (b), which was possibly due to the formation of anatase TiO 2 on the edge planes of MXenes. [206,207,208] The capacity of the TiO 2 /Ti 3 C 2 composite electrode was better than that of the counterpart prepared with pure Ti 3 C 2 (237 versus 130 mAh g À 1 at 100 mA g À 1 ), which was due to the synergistic pillar-free anatase TiO 2 /Ti 3 C 2 illustrating the expanded interlayer distance from 1.01 to 1.30 nm. [206] Reproduced with permission from Ref.…”

Section: Mxene-metal Oxide Compositesmentioning

confidence: 93%

“…[205] MXenes/TiO 2 : For instance, an anode based on TiO 2 /Ti 3 C 2 composite was developed for sodium-ion batteries by Wang et al, in which pillars were not included in the composite architecture to increase the interlayer voids and thus facilitated the accommodation of metal ions. [206] After annealing Ti 3 C 2 at 400°C for 2 hours, MXenes were partially oxidised with the formation of pillar-free anatase TiO 2 /Ti 3 C 2 . As a result, the interlayer distance increased from 1.01 to 1.30 nm, as shown in Figure 20 (a) and (b), which was possibly due to the formation of anatase TiO 2 on the edge planes of MXenes.…”

Section: Mxene-metal Oxide Compositesmentioning

confidence: 99%

“…effect of the expanded interlayer spacing and the pseudocapacitive sites contributed by TiO 2 nanoparticles. [206] Recently, Ti 3 C 2 @TiO 2 nanoarrays prepared by in situ solvothermal process with an annealing treatment were successfully applied as the sulphur host in lithium-sulphur batteries, in which the restacking of MXenes was eliminated by the formation of TiO 2 nanoarrays, as shown in Figure 20 (c). [208] Additionally, the polysulphides were effectively trapped by the polar-polar interaction due to the polarity of TiO 2 , and the Lewis acid-base mechanism owing to the abundant acid metal sites on the surface of MXenes.…”

Section: Mxene-metal Oxide Compositesmentioning

confidence: 99%

“…Figure20. TEM images of (a) Ti 3 C 2 and (b) pillar-free anatase TiO 2 /Ti 3 C 2 illustrating the expanded interlayer distance from 1.01 to 1.30 nm [206]. Reproduced with permission from Ref [206]…”

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confidence: 99%

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Strategies for Fabricating High‐Performance Electrochemical Energy‐Storage Devices by MXenes

Zhou

et al. 2021

ChemElectroChem

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Since 2011, MXenes, a family of two-dimensional transitionmetal carbides, nitrides, and carbonitrides, have been investigated as electrodes, additives, separators, and hosts for energy-storage devices (ESDs, including supercapacitors and metal-ion batteries) due to their unique properties. This report focuses on the present technical issues in the field of energy storage and the corresponding solutions involving MXenes. It begins with a series of synthesis approaches (including topdown and bottom-up strategies) with a brief description of the structural properties, covering crystal lattice, structural defects, and surface chemistries. In addition, the impact of surface functional groups, composition of transition metals temperature and external pressure on the electrical properties of MXenes is discussed. Then, current issues of ESDs are listed with several MXene-based solutions, including intercalation, modification of the terminating groups, chemical doping, vacancy engineering and the design of nanocomposites. Finally, the challenges in MXene-based ESDs are summarised with some potential research directions in the future.

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Section: Mxene-metal Oxide Compositesmentioning

confidence: 93%

Section: Mxene-metal Oxide Compositesmentioning

confidence: 99%

Section: Mxene-metal Oxide Compositesmentioning

confidence: 99%

mentioning

confidence: 99%

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Strategies for Fabricating High‐Performance Electrochemical Energy‐Storage Devices by MXenes

Zhou

et al. 2021

ChemElectroChem

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“…TBAOH can also be intercalated into a TiO 2 /Ti 3 C 2 composite for SIB anodes, with a capacity of 237.8 mAh g −1 at 100 mA g −1 . [ 96 ] Similarly, tetramethylammonium hydroxide (TMAOH)‐intercalated Nb 4 C 3 T x MXene nanosheets have also been reported for supercapacitors. [ 97 ] The nanosheets exhibit an initial interlayer spacing of 1.77 nm and can support the layered structure during cycling performance without collapse.…”

Section: Applications Of Layered Materials In Energy Storage Devicesmentioning

confidence: 99%

Interlayer Chemistry of Layered Electrode Materials in Energy Storage Devices

Zhang

Ang

Yang

et al. 2020

Adv Funct Materials

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With the constant focus on energy storage devices, layered materials are ideal electrodes for the new generation of highly efficient secondary ion batteries and supercapacitors due to their flexible 2D structures and high theoretical capacities. However, the small interlayer distances in layered electrode materials and the strong Columbic interactions between the working ions and host lattice anions cause slow ion diffusion. In addition, structural collapse during repeated ion insertion and extraction reduces the cycling lifetime. As such, interlayer engineering strategies are effective approaches to optimize ion transmission kinetics and structural integrity. In view of the latest research on the interlayer engineering of layered materials, this review will discuss useful strategies to improve electrode performance. The synthetic strategies, characterization techniques, and effects of interlayer‐engineered layered materials, including metal oxides, metal sulfides, carbonous materials, and MXenes, are discussed in detail. The future outlook and challenges for interlayer engineering are also presented, which may pave the way for the development of new layered materials.

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Optimized TiO Subcompounds and Elastic Expanded MXene Interlayers Boost Quick Sodium Storage Performance

Liu

et al. 2023

Adv Funct Materials

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To develop quick‐charge sodium‐ion battery, it is significant to optimize insertion‐type anode to afford fast Na+ diffusion rate and excellent electron conductivity. First‐principles calculations reveal the TiO subcompound superiority for Na+ diffusion following Ti(II)O > Ti(III)O > Ti(IV)O. Hence, in situ growth of amorphous TiO subcompounds with rich oxygen defects based on Ti3C2Tx‐MXene is developed. Meanwhile, the composite presents expanded MXene interlayer spacing and much enhanced conductivity. The synergistic effect of enhanced electron/ion conduction gives a high capacity of 107 mAh g−1 at 50 A g−1, which gives 50% and 150% increasements compared with one counterpart without valence adjustment and another one without MXene expansion. It only needs 20 s (at 30 A g−1) to complete the discharge/charge process and obtains a capacity of 144.5 mAh g−1, which also shows a long‐term cycling stability at quick‐charge mode (121 mAh g−1 after 10000 cycles at 10 A g−1). The enhanced performance comes from fast electron transfer among TiO subcompounds contributed by rich‐defect amorphous TiO2–x, and a reversible change of elastic MXene with interlayer spacing between 1.4 and 1.9 nm during Na+ insertion/extraction process. This study provides a feasible route to boost the kinetics and develop quick‐charge sodium‐ion battery.

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Pillar-free TiO2/Ti3C2 composite with expanded interlayer spacing for high-capacity sodium ion batteries

Cited by 66 publications

References 44 publications

Strategies for Fabricating High‐Performance Electrochemical Energy‐Storage Devices by MXenes

Strategies for Fabricating High‐Performance Electrochemical Energy‐Storage Devices by MXenes

Interlayer Chemistry of Layered Electrode Materials in Energy Storage Devices

Optimized TiO Subcompounds and Elastic Expanded MXene Interlayers Boost Quick Sodium Storage Performance

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