Superior interfacial stability and conductivity of B-doped LiPON electrolyte for LiCoO2 electrode in solid-state lithium batteries

Feng, Qinkai; Xie, Xiuhuai; Zhang, Miao; Liao, Ningbo

doi:10.1016/j.colsurfa.2022.129349

Cited by 10 publications

(3 citation statements)

References 45 publications

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“…It is reported that the introduction of boron in solid electrolytes can form stable compounds, which can inhibit undesirable chemical reactions at the interface. Feng et al 31 investigated the interfacial thermodynamic stability between lithium cobalt oxide and B-doped lithium phosphorus oxynitride in all-solid-state batteries by first-principle calculations and ab initio molecular dynamics. The results show that the LiCO 2 /LiBPON system exhibits an excellent ability of interfacial bonding and electronic properties, indicating that B doping can effectively improve the interface stability.…”

Section: Introductionmentioning

confidence: 99%

Tungsten and Boron Codoping toward High Ionic Conductivity and Stable Sodium Solid Electrolyte for All-Solid-State Sodium Batteries

Wang,

Liu,

et al. 2024

ACS Appl. Mater. Interfaces

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Sodium solid electrolytes with high ionic conductivity and good interfacial stability with sodium metal are crucial to realize high-performance allsolid-state sodium batteries. In this work, W and B-codoped Na 3 Sb 1−x W x S 4−x B x solid electrolytes are prepared by melt-quenching with further annealing. The synthesized Na 3 Sb 0.95 W 0.05 S 3.95 B 0.05 solid electrolyte possesses a high ionic conductivity of 11.06 mS cm −1 under 25 °C and shows significantly improved interface compatibility with metal sodium. Specifically, Na/Na 3 Sb 0.95 W 0.05 S 3.95 B 0.05 / Na symmetric cell can stable cycle for 500 h under a current density of 0.05 mA cm −2 . In addition, the resultant TiS 2 /Na 3 Sb 0.95 W 0.05 S 3.95 B 0.05 /Na battery exhibits an initial charge capacity of 164.1 mAh g −1 at 0.1 C with a capacity retention of 76.4% after 100 cycles. This work provides a new strategy to realize the high ionic conductivity of sodium solid electrolytes with improved interfacial stability with sodium anode.

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Section: Introductionmentioning

confidence: 99%

Tungsten and Boron Codoping toward High Ionic Conductivity and Stable Sodium Solid Electrolyte for All-Solid-State Sodium Batteries

Wang,

Liu,

et al. 2024

ACS Appl. Mater. Interfaces

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“…These materials have low conductivity, with values of 10 À4 , 10 À6 , and 10 À9 S cm À1 , respectively. [7][8][9][10] Therefore, appropriate amounts of conductive agents are often added during the preparation process to enhance the conductivity of the positive electrode material. Commonly used conductive agents include graphite, carbon black, and carbon nanotubes, among others.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, the main positive electrode materials that are being studied and applied are LiCoO 2 , LiMn 2 O 4 , and LiFePO 4 . These materials have low conductivity, with values of 10 −4 , 10 −6 , and 10 −9 S cm −1 , respectively 7–10 . Therefore, appropriate amounts of conductive agents are often added during the preparation process to enhance the conductivity of the positive electrode material.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of copolymers of N‐vinylpyrrolidone and 2‐ethylhexyl acrylate by DL‐methionine‐mediated reversible deactivation radical polymerization and their dispersion behavior in preparation of LiFePO₄ battery positive slurry with high solid content

An,

Wang,

Hui

et al. 2024

Journal of Polymer Science

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Dispersants play a significant role in the formulation of positive battery slurry. Adding a small amount of dispersant can effectively reduce the viscosity of the slurry, which is beneficial for the production of positive batteries. A series of copolymers of N‐vinylpyrrolidone (NVP) and 2‐ethylhexyl acrylate (2‐EHA) with different molar ratios of NVP to 2‐EHA, different polymer molecular weights and different polymer structures are synthesized by dl‐methionine‐mediated reversible deactivation radical polymerization. The ability of these copolymers to disperse LiFePO4 battery positive slurry with a high solid content (57.08%) as dispersants has been evaluated. Research shows that when the ratio of NVP to 2‐EHA is 20 and the polymer molecular weight is 6000, poly(N‐vinylpyrrolidone‐ran‐2‐ethylhexyl acrylate) (NVP‐ran‐2‐EHA) exhibits the strongest dispersing ability to the slurry. This polymer can reduce the viscosity of the slurry by 43.925% and has the longest stabilization time of 3 h, which is better than poly(N‐vinylpyrrolidone) (PVP) and poly(N‐vinylpyrrolidone)‐block‐poly(2‐ethylhexyl acrylate) (PVP‐b‐PEHA) with the same molecular weight.

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Lithium Phosphorous Oxynitride as an Advanced Solid‐State Electrolyte to Boost High‐Energy Lithium Metal Battery

Zou,

Xiao,

Lin

et al. 2024

Adv Funct Materials

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Lithium phosphorous oxynitride (LiPON) as one of the most successful solid‐state electrolytes (SSEs), has attracted great interest both in academia and technology due to its exceptional interfacial compatibility, broad electrochemical stability window, and excellent thermal stability, which enables the realization of extremely stable electrolyte/electrode interphase toward high‐energy density solid‐state lithium‐metal batteries (SSLMBs). However, insufficiency in ionic diffusion, mechanical robustness, and interfacial stability hinder its commercialization process. Herein, the characteristics of amorphous structure LiPON, fundamental understanding on the bulk ionic diffusion and electrode/electrolyte interface are systematically discussed, and the improvement strategies to boost the electrochemical performance are highlighted. Then, innovative characterization and computational methods help to unravel the design principle of LiPON are summarized. Furthermore, the approaches to realize high‐efficient preparation of LiPON are analyzed, followed by the investigation of present application of LiPON in current batteries. Finally, remaining challenges associated with the fundamental understanding and rational prediction of structure and interface design, high efficient preparation, and potential opportunities for future application of LiPON are properly prospected.

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Superior interfacial stability and conductivity of B-doped LiPON electrolyte for LiCoO2 electrode in solid-state lithium batteries

Cited by 10 publications

References 45 publications

Tungsten and Boron Codoping toward High Ionic Conductivity and Stable Sodium Solid Electrolyte for All-Solid-State Sodium Batteries

Tungsten and Boron Codoping toward High Ionic Conductivity and Stable Sodium Solid Electrolyte for All-Solid-State Sodium Batteries

Synthesis of copolymers of N‐vinylpyrrolidone and 2‐ethylhexyl acrylate by DL‐methionine‐mediated reversible deactivation radical polymerization and their dispersion behavior in preparation of LiFePO₄ battery positive slurry with high solid content

Lithium Phosphorous Oxynitride as an Advanced Solid‐State Electrolyte to Boost High‐Energy Lithium Metal Battery

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Superior interfacial stability and conductivity of B-doped LiPON electrolyte for LiCoO2 electrode in solid-state lithium batteries

Cited by 10 publications

References 45 publications

Tungsten and Boron Codoping toward High Ionic Conductivity and Stable Sodium Solid Electrolyte for All-Solid-State Sodium Batteries

Tungsten and Boron Codoping toward High Ionic Conductivity and Stable Sodium Solid Electrolyte for All-Solid-State Sodium Batteries

Synthesis of copolymers of N‐vinylpyrrolidone and 2‐ethylhexyl acrylate by DL‐methionine‐mediated reversible deactivation radical polymerization and their dispersion behavior in preparation of LiFePO4 battery positive slurry with high solid content

Lithium Phosphorous Oxynitride as an Advanced Solid‐State Electrolyte to Boost High‐Energy Lithium Metal Battery

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Synthesis of copolymers of N‐vinylpyrrolidone and 2‐ethylhexyl acrylate by DL‐methionine‐mediated reversible deactivation radical polymerization and their dispersion behavior in preparation of LiFePO₄ battery positive slurry with high solid content