Li-B alloy with artificial solid electrolyte interphase layer for long-life lithium metal batteries

Zhang, Xianggong; Sui, Xin; Zhou, Sisi; Cong, Tao; Wang, Rui

doi:10.1016/j.ssi.2020.115408

Cited by 10 publications

(4 citation statements)

References 27 publications

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“…The SEM characterization is shown in Figure a. The results showed that the SEI film resistance and charge transfer resistance of the graphite electrode containing BS did not change much, while the SEI film resistance and charge transfer resistance of the graphite electrode without BS increased significantly. − However, if the thickness of the SEI film is reduced, the rate at which carriers can penetrate the passivation film will increase, and the battery’s cycle characteristics and other performance will be restored. Li put forward new thoughts on high energy density rechargeable batteries, expounded the influence of unstable SEI on the service life of lithium metal batteries, and made his own insights on fluorinated SEI, and carried out characterization and electrochemical experiments.…”

Section: Characterization Of Seimentioning

confidence: 99%

Review on Action Mechanism and Characterization of Natural/Artificial Solid Electrolyte Interphase of Lithium Battery: Latest Progress and Future Directions

et al. 2023

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At present, the basic structure and mechanism of solid electrolyte interface (SEI) have been studied based on different models. Although many researchers have observed the characteristics and properties of SEI through various characterization methods, it is still unable to explain its dynamic mechanism of action from the very small microscopic level. Among them, most researchers change the electrochemical performance of batteries by adding additives or material coating. Traditional research methods only state the performance of batteries from the appearance but lack detailed analysis of the electrochemical reaction of batteries during the research process. Based on the analysis of some models established by SEI, this study summarized the analysis of the research angle of SEI film through various characterization methods. The present traditional SEI and artificial SEI are introduced. Finally, the methods to improve the chemical performance of lithium battery and the challenges to solve the problems are summarized and prospected.

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Section: Characterization Of Seimentioning

confidence: 99%

Review on Action Mechanism and Characterization of Natural/Artificial Solid Electrolyte Interphase of Lithium Battery: Latest Progress and Future Directions

et al. 2023

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“…The potential of 80LiB is similar to that of metallic lithium due to the over 80 wt % of free lithium . Moreover, the 80LiB alloy has much lower density compared to other reported alloys due to the low atomic mass of boron. − Therefore, the low potential and density of the 80LiB alloy ensures its much higher gravimetric specific energy density compared with other alloy anodes.…”

mentioning

confidence: 92%

Bulk/Interfacial Synergetic Approaches Enable the Stable Anode for High Energy Density All-Solid-State Lithium–Sulfur Batteries

et al. 2022

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All-solid-state lithium–sulfur batteries (ASSLSBs) using solid-state electrolytes (SSEs) are believed to concurrently ensure high safety and decent electrochemical performance. However, the ASSLSBs still face several challenges on the anode side, including the interfacial incompatibility between Li/SSEs, dendritic problems, and dramatic volume expansion/contraction of Li metal during cycling. Herein, we propose bulk/interfacial synergetic approaches to overcome the above limitations by incorporating the Li-based lithium–boron (80LiB) alloy with a unique 3D skeleton and Ag@C modified layer. These synergistic approaches have proven to effectively alleviate the volume variation to retain the bulk electrode integrity, facilitate homogeneous Li dissolution/deposition to inhibit the formation of lithium dendrite, and suppress interfacial side reactions to maintain a stable interphase. Benefitting from our ingenious design, the ASSLSBs deliver a specific capacity of 1316 mAh g–1 and a capacity retention of 82% after 60 cycles. These approaches pave a new way to develop high energy density and high performance ASSLSBs.

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“…LiB is used as a Li metal anode through the deposition/dissolution of free Li . In the LiB alloy, Li 7 B 6 acts as a spongelike supporting framework to allow the abundant free Li to be embedded in it and to preferentially participate in the electrochemical reaction. , The Li 7 B 6 component shows electrochemical inertness in rechargeable Li batteries, which maintains the stability of the entire structure. , LiB has excellent electrochemical properties, similar to pure Li. , It has been reported that when LiB is used as an anode, its framework can alleviate the problem of volume expansion during cycling, which is based on the porosity and high electrical conductivity . However, LiB also suffers from rapid capacity loss and unsatisfactory Coulombic efficiency under long cycles.…”

Section: Introductionmentioning

confidence: 99%

“…28 In the LiB alloy, Li 7 B 6 acts as a spongelike supporting framework to allow the abundant free Li to be embedded in it and to preferentially participate in the electrochemical reaction. 29,30 The Li 7 B 6 component shows electrochemical inertness in rechargeable Li batteries, which maintains the stability of the entire structure. 31,32 LiB has excellent electrochemical properties, similar to pure Li.…”

Section: ■ Introductionmentioning

confidence: 99%

Regulating the Interfacial Electric Field for a Stable Lithium Metal Anode

Chai

Zheng

Zhao

et al. 2022

ACS Sustainable Chem. Eng.

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In our work, a homogeneous Au nanosheet layer is coated on the surface of a LiB alloy anode through in situ replacement of free Li to affect the deposition behavior of Li. The highly conductive Au nanosheet network provides a homogeneous electric field distribution on the LiB anode, which effectively reduces the local current density and induces uniform Li deposition. Moreover, the uniformly distributed Au nanosheet layer provides a great deal of electrochemically active centers and nucleation sites, which result in a uniform interfacial reaction of Li deposition in the Au nanosheet layer, thereby greatly slowing down the growth of Li dendrites. On the other hand, the two-dimensional Au nanosheet structure provides a rich internal surface area and a mass of electronic pathways all over the surface of the LiB alloy anode, which significantly enhances the diffusion flux of Li ions and regulates its electrodeposition behavior. At the same time, it effectively alleviates the huge volume change during the repeated stripping and plating of Li. The modified anode exhibits a distinguished electrochemical performance with an ultralong lifespan of up to 1250 h, as well as a low overpotential (<35 mV at 1.0 mA cm–2) at a Li deposition of 1.0 mA h cm–2.

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Li-B alloy with artificial solid electrolyte interphase layer for long-life lithium metal batteries

Cited by 10 publications

References 27 publications

Review on Action Mechanism and Characterization of Natural/Artificial Solid Electrolyte Interphase of Lithium Battery: Latest Progress and Future Directions

Review on Action Mechanism and Characterization of Natural/Artificial Solid Electrolyte Interphase of Lithium Battery: Latest Progress and Future Directions

Bulk/Interfacial Synergetic Approaches Enable the Stable Anode for High Energy Density All-Solid-State Lithium–Sulfur Batteries

Regulating the Interfacial Electric Field for a Stable Lithium Metal Anode

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