Synergy of in-situ heterogeneous interphases tailored lithium deposition

Li, Yinuo; Hu, Anjun; Gan, Xingdong; He, Miao; Zhu, Jing; Chen, Wei; Hu, Yin; Lei, Tianyu; Li, Fēi; Li, Yaoyao; Fan, Yuxin; Wang, Fan; Zhou, Mingjie; Wen, An; Li, Baihai

doi:10.1007/s12274-022-5004-0

Cited by 19 publications

(17 citation statements)

References 49 publications

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“…[ 34 ] Moreover, Li 3 N with gradient distribution (1.33%, 1.2%, and 0.51%, corresponding to 0 min, 2 min, and 4 min respectively) contained in CEI can form heterostructure with LiF, which is helpful for lithium‐ion adsorption and Li + transport. [ 35 ] Notably, the contents of polar amide group in the CEI with 4‐TPIC are more than that with 2‐TPIC (Figure S4b,e, Supporting Information). This may explain why the electrochemical performance of the Li||LiCoO 2 battery with 4‐TPIC is better than that with 2‐TPIC when the content of Li 3 N of the two is close.…”

Section: Resultsmentioning

confidence: 99%

Amide‐Functional, Li₃N/LiF‐Rich Heterostructured Electrode Electrolyte Interphases for 4.6 V Li||LiCoO₂ Batteries

Liu

et al. 2023

Advanced Energy Materials

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Enhancing the charge cut‐off voltage of LiCoO2 at 4.6 V can improve the battery density, however, structural instability is a critical challenge (e.g., electrolyte decomposition, Co dissolution, and structural phase transition). Here, robust electrode electrolyte interphases (EEIs) with the high Li+ conductivity offered by polar amide groups and a Li3N/LiF heterostructure is constructed. 3‐(trifluoromethyl) phenyl isocyanate (3‐TPIC) is rationally designed as an electrolyte additive for sustaining a 4.6 V Li||LiCoO2 battery with such CEI, which can effectively address the challenge of structural instability. The polar amide group can achieve Li+ de‐solvation and increase Li+ transport. Li3N/LiF heterostructure in the cathode electrolyte interphase (CEI) can speed up the Li+ insertion/extraction for improving Coulombic efficiency and weakening polarization of LiCoO2 at 4.6 V. In addition, the solid electrolyte interphase (SEI) with a similar structure on the Li anode surface contributes to the uniform Li deposition for suppressing the Li dendrite growth. As expected, 4.6 V Li||LiCoO2 batteries with superior EEIs can deliver excellent electrochemical performance.

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Section: Resultsmentioning

confidence: 99%

Amide‐Functional, Li₃N/LiF‐Rich Heterostructured Electrode Electrolyte Interphases for 4.6 V Li||LiCoO₂ Batteries

Liu

et al. 2023

Advanced Energy Materials

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“…The work functions of 4.89 and 6.80 eV for NiS and TiO 2 are shown in the Supporting Information, respectively (Figure S8d,e). This suggests that a transfer of electrons occurred from NiS to TiO 2 , causing a tendency of charge separation until the two were stabilized through their contact . This produced an electric field direction from NiS to TiO 2 , and the positive and negative charges gathered on the NiS and TiO 2 side, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…This suggests that a transfer of electrons occurred from NiS to TiO 2 , causing a tendency of charge separation until the two were stabilized through their contact. 58 This produced an electric field direction from NiS to TiO 2 , and the positive and negative charges gathered on the NiS and TiO 2 side, respectively. In particular, the characteristics of the NiS compound with a low electrostatic potential could provide a driving force for the migration of Na + .…”

Section: Morphology and Structure Characterizationmentioning

confidence: 99%

Heterostructured NiS/TiO₂ Nanosheets Assembled into Microflowers with Enhanced Cycling Stability for Sodium-Ion Storage

Zhang

Qin

Yan

et al. 2023

ACS Appl. Energy Mater.

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Transition metal sulfides are characterized by their low price and strong capacity performance and show a great potential for development as materials for anodes in sodium-ion batteries (SIBs). However, the structure instability and inherently poor conductivity limit their practical application. In this work, heterostructured NiS/TiO 2 microflower composite materials assembled by nanosheets are synthesized through a hydrothermally assisted postsulfidation method. Meanwhile, the nanosheets are further coated by N, S double-doped carbon using pyrolytic dopamine to increase their electrical conductivity. It is demonstrated that the unique heterostructure not only narrows the band gap of composite materials but also generates an electronconcentrated region on the heterointerface, which significantly enhances the rate of charge transfer, Na + diffusion ability, and reaction kinetic properties. As a consequence, the composites reveal superior electrochemical properties for Na + storage; the specific capacity is 632.1 mA h g −1 after 100 cycles at 0.1 A g −1 and even up to 1.0 A g −1 , while a capacity of 514.2 mA h g −1 is maintained after 250 cycles. The full battery is assembled by NiS/TiO 2 , and Na 4 Fe 3 (PO4) 2 P 2 O 7 also displays a good capacity and stability performance. These results provide a direction for the exploration of anode materials for SIBs.

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“…Commonly, artificial coatings are applied to the surface of lithium metal to form alloys for the uniform deposition of lithium ions. , One such artificial coating is tin fluoride (SnF 2 ) on the surface of lithium metal, which reacts with lithium metal to form a tin–lithium alloy (Li 5 Sn 2 ) for the uniform deposition of lithium ions . Additionally, a thin metal-tungsten interlayer on the surface of lithium metal has been demonstrated to facilitate the uniform deposition of lithium ions through a lithium–tungsten alloying reaction. − However, the softness of the lithium metal surface, the complex fabrication process, and strict environmental requirements severely hinder the development of artificial coatings on the surface of the lithium metal. Therefore, the construction of artificial coatings on polymer electrolytes has been a better choice. − In general, polymer electrolytes display insufficient mechanical strength to resist the growth of lithium dendrites .…”

Section: Introductionmentioning

confidence: 99%

Silicon Layer on Polymer Electrolyte as a Dendrite Stopper for Stable Lithium Metal Batteries

Zhao,

Du,

et al. 2023

ACS Appl. Energy Mater.

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Silicon (Si) is a promising candidate for nextgeneration anode materials because of its high specific capacity of 3579 mAh g −1 and low potential of 0.4 V (vs Li + /Li). However, the development of Si anode has been limited by the huge volume expansion during the lithiation process. Here, a layer of core−shell Si@SiO x nanoparticles is coated on one surface of the polymer electrolyte as a dendrite stopper by taking advantage of the high specific capacity of Si, and the negative effects of Si volume expansion can be offset by the flexibility of the polymer electrolyte. The Si@SiO x layer is employed to match the lithium metal anode for suppressing the growth of lithium dendrites. When lithium dendrites are in contact with the Si@SiO x layer, the Si@SiO x nanoparticles can react with lithium ions deposited on the contact interface to form a Li−Si alloy (Li y Si), which can reduce the concentration of lithium ions at the sharp ends of lithium dendrites, thus inhibiting the further growth of lithium dendrites. As a result, symmetric Li//Li cells can maintain stability without lithium dendrites for more than 2600 h. This study presents a promising approach to address the dendrite issue in solid-state lithium metal batteries.

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Synergy of in-situ heterogeneous interphases tailored lithium deposition

Cited by 19 publications

References 49 publications

Amide‐Functional, Li₃N/LiF‐Rich Heterostructured Electrode Electrolyte Interphases for 4.6 V Li||LiCoO₂ Batteries

Amide‐Functional, Li₃N/LiF‐Rich Heterostructured Electrode Electrolyte Interphases for 4.6 V Li||LiCoO₂ Batteries

Heterostructured NiS/TiO₂ Nanosheets Assembled into Microflowers with Enhanced Cycling Stability for Sodium-Ion Storage

Silicon Layer on Polymer Electrolyte as a Dendrite Stopper for Stable Lithium Metal Batteries

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Synergy of in-situ heterogeneous interphases tailored lithium deposition

Cited by 19 publications

References 49 publications

Amide‐Functional, Li3N/LiF‐Rich Heterostructured Electrode Electrolyte Interphases for 4.6 V Li||LiCoO2 Batteries

Amide‐Functional, Li3N/LiF‐Rich Heterostructured Electrode Electrolyte Interphases for 4.6 V Li||LiCoO2 Batteries

Heterostructured NiS/TiO2 Nanosheets Assembled into Microflowers with Enhanced Cycling Stability for Sodium-Ion Storage

Silicon Layer on Polymer Electrolyte as a Dendrite Stopper for Stable Lithium Metal Batteries

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Amide‐Functional, Li₃N/LiF‐Rich Heterostructured Electrode Electrolyte Interphases for 4.6 V Li||LiCoO₂ Batteries

Amide‐Functional, Li₃N/LiF‐Rich Heterostructured Electrode Electrolyte Interphases for 4.6 V Li||LiCoO₂ Batteries

Heterostructured NiS/TiO₂ Nanosheets Assembled into Microflowers with Enhanced Cycling Stability for Sodium-Ion Storage