Fe3+-stabilized Ti3C2T  MXene enables ultrastable Li-ion storage at low temperature

Zhao, Nana; Zhang, Fengchu; Zhan, Fei; Ding, Yi; Yang, Yijun; Cui, Weibin; Wang, Xi

doi:10.1016/j.jmst.2020.06.037

Cited by 48 publications

(18 citation statements)

References 50 publications

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“…With an increase in the scan rate, the cathodic and anodic peaks shifted to relatively low and high potential ranges, respectively, indicating the presence of combined diffusion-controlled and capacitive behaviours. In theory, the scan rate (v) and the measured current (i) comply with Equations (3)(4)(5)(6) proposed by Dunn's group [31,32]:…”

Section: Articles Science China Materialsmentioning

confidence: 62%

“…Sodium-ion batteries (SIBs) have received considerable attention due to their excellent potential as viable alternatives to lithiumion batteries (LIBs) in cost-efficient large-scale energy storage systems and low-speed electric vehicles [1,2]. In addition to their cost, safety, and electrochemical performance, low-temperature (LT) properties are vital parameters for their practical applications in the commercial market [3][4][5][6]. Thermal management systems are used to ensure that SIBs operate over suitable and favourable temperature range; however, SIBs perform well at LT through not only thermal management but also novel cell design [7,8].…”

Section: Introductionmentioning

confidence: 99%

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A durable P2-type layered oxide cathode with superior low-temperature performance for sodium-ion batteries

Zhao

Feng

et al. 2021

Sci. China Mater.

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To power large-scale energy storage systems, sodium-ion batteries (SIBs) must have not only high-energy density but also high performance under a low-temperature (LT) environment. P2-type manganese oxides with high specific capacity are promising cathode candidates for SIBs, but their LT applications are limitedly explored. We proposed a P2-type Na 0.67 Ni 0.1 Co 0.1 Mn 0.8 O 2 material with outstanding LT performance prepared through reasonable structure modulation. The material offers an excellent Na + diffusion coefficient (approximately 10 −9 -10 −7.5 cm 2 s −1 ) at −20°C, a superior LT discharge capacity of 147.4 mA h g −1 in the Na half-cell system, and outstanding LT full cell performance (energy density of 358.3 W h kg −1 ). Various characterisations and density function theory calculations results show that the solid solution reaction and pseudocapacitive feature promote the diffusion and desolvation of Na + from the bulk electrode to interface, finally achieving superior electrochemical performance at LT.

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Section: Articles Science China Materialsmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

A durable P2-type layered oxide cathode with superior low-temperature performance for sodium-ion batteries

Zhao

Feng

et al. 2021

Sci. China Mater.

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“…As displayed in Figure c, the NiFe-LDH/MXene electrode shows a good rate capability, with capacities of 959.5, 651.7, 528.8, 413.8, 315.5, 270.3, and 815.4 mAh g –1 , superior to NiFe-LDH and MXene. In addition, the rate capability of NiFe-LDH/MXene is superior to those of reported MXene-based anodes, such as P-Ti 3 C 2 , CNTs@Ti 3 C 2 , Co 0.85 Se@C/Ti 3 C 2 T x , 3D porous MXene, Ti 3 C 2 T x /Fe 2 O 3 , SnO x @Ti 3 C 2 , and TiO 2– x /Ti 3 C 2 (Figure d), which is summed in Table S1. Figure e exhibits a corresponding cycling stability at 0.1 A g –1 for 200 cycles.…”

Section: Resultsmentioning

confidence: 86%

Ti₃C₂ MXene-Encapsulated NiFe-LDH Hybrid Anode for High-Performance Lithium-Ion Batteries and Capacitors

Zhang

Cao

et al. 2021

ACS Appl. Energy Mater.

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Layered doubled hydroxides (LDHs) have aroused much attention in energy storage for their exchangeable anions and tunable interlayer spacing. However, poor electrical conductivity and aggregation of flakes cause huge volume changes and reduce accessible active sites, leading to inferior cycle stability and rate performance. Hence, a NiFe-LDH/Ti3C2 MXene hybrid with uniformly distributed NiFe-LDH nanoflakes decorated on MXene nanosheets through a simple hydrothermal reaction is prepared. Due to the synergism between the Ti3C2 MXene conductive frameworks and NiFe-LDH, NiFe-LDH/ Ti3C2 MXene shows a superior electrochemical property for lithium storage. Its reversible capacity is 898.9 mAh g–1 at 0.1 A g–1, and even at 1 A g–1, it still has 726.1 mAh g–1, without capacity reduction in lithium-ion half-cells. In addition, the corresponding lithium-ion capacitor shows a higher energy density and power density, showing huge application prospect in lithium storage.

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“…The first stage corresponds to Li + intercalation between Ti 3 C 2 T z nanosheets forming Li 2 Ti 3 C 2 T z (theoretical capacity of 260 mA h g –1 ), followed by Li + adsorption above the first intercalated layer, resulting in Li 3 Ti 3 C 2 T z , in the lower voltage region. An additional short plateau is observed on the initial discharge for both materials, which is commonly assigned to the solid electrolyte interphase (SEI) formation and irreversible reactions between Li and MXene surface groups. − Both materials also show typical linear charge profiles, with a small plateau around 1.5 V, resulting from Li deintercalation.…”

Section: Results and Discussionmentioning

confidence: 95%

In Situ Investigation of Expansion during the Lithiation of Pillared MXenes with Ultralarge Interlayer Distance

et al. 2021

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Pillared Ti3C2T z MXene with a large interlayer spacing (1.75 nm) is shown to be promising for high-power Li-ion batteries. Pillaring dramatically enhances the electrochemical performance, with superior capacities, rate capability, and cycling stability compared to the nonpillared material. In particular, at a high rate of 1 A g–1, the SiO2-pillared MXene has a capacity over 4.2 times that of the nonpillared material. For the first time, we apply in situ electrochemical dilatometry to study the volume changes within the MXenes during (de)lithiation. The pillared MXene has superior performance despite larger volume changes compared to the nonpillared material. These results give key fundamental insights into the behavior of Ti3C2T z electrodes in organic Li electrolytes and demonstrate that MXene electrodes should be designed to maximize interlayer spacings and that MXenes can tolerate significant initial expansions. After 10 cycles, both MXenes show nearly reversible thickness changes after the charge–discharge process, explaining the stable long-term electrochemical performance.

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Fe3+-stabilized Ti3C2T MXene enables ultrastable Li-ion storage at low temperature

Cited by 48 publications

References 50 publications

A durable P2-type layered oxide cathode with superior low-temperature performance for sodium-ion batteries

A durable P2-type layered oxide cathode with superior low-temperature performance for sodium-ion batteries

Ti₃C₂ MXene-Encapsulated NiFe-LDH Hybrid Anode for High-Performance Lithium-Ion Batteries and Capacitors

In Situ Investigation of Expansion during the Lithiation of Pillared MXenes with Ultralarge Interlayer Distance

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Fe3+-stabilized Ti3C2T MXene enables ultrastable Li-ion storage at low temperature

Cited by 48 publications

References 50 publications

A durable P2-type layered oxide cathode with superior low-temperature performance for sodium-ion batteries

A durable P2-type layered oxide cathode with superior low-temperature performance for sodium-ion batteries

Ti3C2 MXene-Encapsulated NiFe-LDH Hybrid Anode for High-Performance Lithium-Ion Batteries and Capacitors

In Situ Investigation of Expansion during the Lithiation of Pillared MXenes with Ultralarge Interlayer Distance

Contact Info

Product

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Ti₃C₂ MXene-Encapsulated NiFe-LDH Hybrid Anode for High-Performance Lithium-Ion Batteries and Capacitors