In situ construction of Li3N-enriched interface enabling ultra-stable solid-state LiNi0.8Co0.1Mn0.1O2/lithium metal batteries

Chen, Likun; Gu, Tian; Ma, Jiabin; Yang, Ke; Shi, Peiran; Biao, Jie; Mi, Jinshuo; Liu, Ming; Lv, Wei; He, Yu

doi:10.1016/j.nanoen.2022.107470

Cited by 58 publications

(49 citation statements)

References 36 publications

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“…Chen et al proposed a CSE with high ionic conductivity and low activation energy by using g-C 3 N 4 nanosheets reinforced with PVDF (Figure 3b). 44 The SEI with rich Li 3 N is in situ produced by g-C 3 N 4 reacting with Li during cycling, which significantly inhibits continuous side reactions and provides a fast lithium-ion transport channel. Moreover, to improve the interfacial compatibility and obtain rapid ions transport, Pan et al prepared a flexible ceramic/ polymer CSE via in situ coupling reactions (Figure 3c).…”

Section: Anode/se Interface Stabilitymentioning

confidence: 99%

Current Status and Enhancement Strategies for All-Solid-State Lithium Batteries

et al. 2023

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Conspectus All-solid-state lithium batteries have received considerable attention in recent years with the ever-growing demand for efficient and safe energy storage technologies. However, key issues remain unsolved and hinder full-scale commercialization of all-solid-state lithium batteries. Previously, most discussion only focused on how to achieve high energy density from the theoretical perspective. Herein, we analyze the real cases of different kinds of all-solid-state lithium batteries with high energy density to understand the current status, including all-solid-state lithium-ion batteries, all-solid-state lithium metal batteries, and all-solid-state lithium–sulfur batteries. First, we propose a general calculation method to visually compare the above battery systems partly due to no normative parameters for solid-state batteries. After then, we discuss and interpret the key parameters and current situation of all-solid-state lithium batteries. Through the summary and analysis of the frontier, one can find that, although some breakthrough has been made in energy density and areal capacity for solid-state batteries, there are still many aspects to be improved such as power density and rate performance. Therefore, in response to the challenges, we propose possible directions for future development, including the ways to prepare different kinds of solid electrolyte films to reduce the proportion of inactive substances in the cell. The advantages and disadvantages are discussed about three typical solid-state electrolyte films (inorganic solid electrolyte, solid polymer electrolyte, and composite solid electrolyte). In addition, potential candidate anodes with high capacity and cathodes with high voltage and/or high capacity are also discussed in details. The combination of lithium metal anodes with ultrahigh capacity and cathodes with both high capacity and high voltage is the current mainstream direction. However, the interface problems have become the most pressing factor on the application. Therefore, we introduce the origin of interfaces and interphases and discuss how to build a stable electrode/solid electrolyte interface. One thing is clear that artificial solid electrolyte interphases and composite solid electrolytes are effective to obtain stable anode/solid electrolyte interfaces, which can prevent lithium from constantly reacting with solid electrolytes, ensure the uniform lithium deposition and prevent the formation of lithium dendrites. For the cathode/solid electrolyte interface, reasonable composite cathodes, multilayer design, and composite solid electrolytes can optimize the electrode and interface for stable cycles at high voltages and high current densities. Furthermore, the contribution of high-throughput computations and machine learning is introduced in accelerating materials screening and development. Among them, progress has been made in solid electrolytes and artificial solid electrolyte interphases through materials genome engineering and machine learning. Finally, we provide some out...

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Section: Anode/se Interface Stabilitymentioning

confidence: 99%

Current Status and Enhancement Strategies for All-Solid-State Lithium Batteries

et al. 2023

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“…, offer stable solid-electrolyte interfaces and improve the NCM811-based SSB performance. 226–229 Li et al have synthesized trifluoroethyl methacrylate (PTFEMA)–PEO by electropolymerization. 229 The PTFEMA layer modified the NCM811-electrolyte interface and plays the following roles: (i) offers undisrupted transport of Li + across the interface, (ii) mitigates the electrolyte oxidation at high voltage, (iii) prevents the microcrack formation and (iv) buffers the stress, generated by volume change in NCM811 particles during charge–discharge cycling.…”

Section: Ni-rich Ncms For Solid-state Libsmentioning

confidence: 99%

“…Various modied polymer electrolytes, such as g-C 3 N 4 nanosheet (GCN) reinforced poly(vinylidene uoride) (PVDF-GCN), poly(vinylidene-cotriuoroethylene) [P(VDF-TrFE)], decabromodiphenyl ethane (DBDPE) added poly(ethylene oxide) (PEO), triuoroethyl methacrylate (TFEMA)-PEO, etc., offer stable solid-electrolyte interfaces and improve the NCM811-based SSB performance. [226][227][228][229] Li et al have synthesized triuoroethyl methacrylate (PTFEMA)-PEO by electropolymerization. 229 The PTFEMA layer modied the NCM811-electrolyte interface and plays the following roles: (i) offers undisrupted transport of Li + across the interface, (ii) mitigates the electrolyte oxidation at high voltage, (iii) prevents the microcrack formation and (iv) buffers the stress, generated by volume change in NCM811 particles during charge-discharge cycling.…”

Section: Selection Of a Suitable Modification Strategymentioning

confidence: 99%

Low-cobalt active cathode materials for high-performance lithium-ion batteries: synthesis and performance enhancement methods

et al. 2023

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“…Great efforts focusing on the enhancement of interfacial compatibility and ionic conductivity have been made. It was reported that employing electrolyte additives [25][26][27] , adjusting the type of Li salts and solvent [28][29][30] , regulating the solvent content 17 and anchoring the solvent with llers 21 can suppress the side reactions effectively. Most recently, Xu et al reported that the PVDF-based electrolytes possess local high concentrated (LHC) structure, in which the high concentrated solution formed by Lithium bis(tri uoromethanesulfonyl) (LiTFSI) and dimethyl sulfoxide (DMSO) solvent is embedded inside the polymer spherulites, and the LHC structure of the PVDF electrolyte can mitigate the interfacial side reactions compared with the high concentrated solution due to the interactions between solvent and PVDF polymer 31 .…”

Section: Introductionmentioning

confidence: 99%

Phase regulation to obtain dense composite polymer-based electrolytes for high-voltage solid-state lithium metal batteries

Fang

Jiao

et al. 2023

Preprint

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Solid polymer electrolytes are accepted as promising candidates for solid-state lithium metal batteries due to the flexibility and large-scale manufacturability. In particular, poly(vinylidene fluoride)-based polymer electrolytes with unique “salt-polymer-trace residual solvent” configuration exhibit attractive for batteries’ room-temperature operations. However, the porous structure and the still limited ionic conductivity prevent their further advancement. Herein, we proposed a phase regulation strategy to disrupt the symmetry of PVDF chains by coupling with ferroelectric MoSe2 sheets, in which the asymmetric adsorption interactions result in the formation of all trans (TTTT) conformation of PVDF and dense structure of composite electrolyte. The developed β-phase-rich electrolyte provides a high dielectric environment to optimize the solvation structures that form abundant solvent-separated ion pairs, achieving high ionic conductivity (6.5×10− 4 S cm− 1) with low activation energy (0.07 eV). Further, the in-situ reactions between MoSe2 and Li metal construct fast conductor Li2Se in the interfaces, which significantly enhances the interfacial transport kinetics and electrochemical stability. Therefore, the Li||Li cells achieve record cycling of 480 hours at 1 mA cm− 2, and the Li||LiNi0.8Co0.1Mn0.1O2 full cells show ultra-long lifespan of 2000 times at 3C. This work provides an encouraging strategy contributing to large-scale production towards their practical applications.

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In situ construction of Li3N-enriched interface enabling ultra-stable solid-state LiNi0.8Co0.1Mn0.1O2/lithium metal batteries

Cited by 58 publications

References 36 publications

Current Status and Enhancement Strategies for All-Solid-State Lithium Batteries

Current Status and Enhancement Strategies for All-Solid-State Lithium Batteries

Low-cobalt active cathode materials for high-performance lithium-ion batteries: synthesis and performance enhancement methods

Phase regulation to obtain dense composite polymer-based electrolytes for high-voltage solid-state lithium metal batteries

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