Opening the window for aqueous electrolytes

Smith, Leland; Dunn, Bruce

doi:10.1126/science.aad5575

Cited by 94 publications

(62 citation statements)

References 7 publications

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“…[217][218][219][220][221][222] Undoubtably, the most obvious benefit of this optimized electrolyte system is an increased variety of available cathode/anode materials comparing with the traditional type of ARLBs. However, only a few studies have been reported on ARLBs with hierarchitectures, especially constructed by 2D nanomaterials.…”

Section: Aqueous Rechargeable Lithium Batteriesmentioning

confidence: 99%

Hierarchical Structures Based on Two‐Dimensional Nanomaterials for Rechargeable Lithium Batteries

Cong

Xie

2017

Advanced Energy Materials

233

125

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Two‐dimensional (2D) nanomaterials (i.e., graphene and its derivatives, transition metal oxides and transition metal dichalcogenides) are receiving a lot attention in energy storage application because of their unprecedented properties and great diversities. However, their re‐stacking or aggregation during the electrode fabrication process has greatly hindered their further developments and applications in rechargeable lithium batteries. Recently, rationally designed hierarchical structures based on 2D nanomaterials have emerged as promising candidates in rechargeable lithium battery applications. Numerous synthetic strategies have been developed to obtain hierarchical structures and high‐performance energy storage devices based on these hierarchical structure have been realized. This review summarizes the synthesis and characteristics of three styles of hierarchical architecture, namely three‐dimensional (3D) porous network nanostructures, hollow nanostructures and self‐supported nanoarrays, presents the representative applications of hierarchical structured nanomaterials as functional materials for lithium ion batteries, lithium‐sulfur batteries and lithium‐oxygen batteries, meanwhile sheds light particularly on the relationship between structure engineering and improved electrochemical performance; and provides the existing challenges and the perspectives for this fast emerging field.

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Section: Aqueous Rechargeable Lithium Batteriesmentioning

confidence: 99%

Hierarchical Structures Based on Two‐Dimensional Nanomaterials for Rechargeable Lithium Batteries

Cong

Xie

2017

Advanced Energy Materials

233

125

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“…[18,19] Recently,s everal self-healing electronic devices have been fabricated. [20][21][22][23][24][25][26][27][28] However,LIBs that are capable of self-healing have not been realized owing to the difficulties in designing appropriate electrodes and battery structures to enable efficient self-healing for all the components simultaneously.A dditionally,c onventional organic electrolytes decompose rapidly in air once the LIBs are damaged, [29,30] which further increases the complexity to achieve the self-healing functionality.I ti so fb oth scientific and technological importance to explore this kind of LIB.The self-healing capability of the LIBs will be critical for wearable electronics in the near future.Herein, an ew family of self-healing aqueous LIBs is presented for the first time,tothe best of our knowledge,by designing aligned carbon nanotube (CNT) sheets loaded with LiMn 2 O 4 (LMO) and LiTi 2 (PO 4 ) 3 (LTP) nanoparticles on as elf-healing polymer substrate as electrodes and aqueous lithium sulfate/sodium carboxymethylcellulose (Li 2 SO 4 / CMC) as both gel electrolyte and separator. Thecooperation of self-healing polymer with the electrical and healing properties of the aligned CNT sheets electrode and Li 2 SO 4 / CMC gel electrolyte are key to achieve high flexibility and good recovery of electrochemical performance.Inparticular, the electrochemical storage capability was well maintained after several cutting and self-healing cycles.Thef abrication of the self-healing electrodes is shown in Figure 1a.Afree-standing self-healing polymer substrate (see the photographs and chemical structure in Figures S1-S3 of the Supporting Information) was prepared by am odified Leiblersm ethod.…”

mentioning

confidence: 99%

A Self‐Healing Aqueous Lithium‐Ion Battery

et al. 2016

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Flexible lithium-ion batteries are critical for the next-generation electronics. However, during the practical application, they may break under deformations such as twisting and cutting, causing their failure to work or even serious safety problems. A new family of all-solid-state and flexible aqueous lithium ion batteries that can self-heal after breaking has been created by designing aligned carbon nanotube sheets loaded with LiMn O and LiTi (PO ) nanoparticles on a self-healing polymer substrate as electrodes, and a new kind of lithium sulfate/sodium carboxymethylcellulose serves as both gel electrolyte and separator. The specific capacity, rate capability, and cycling performance can be well maintained after repeated cutting and self-healing. These self-healing batteries are demonstrated to be promising for wearable devices.

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“…Intercalated lithium could directly react with the electrolyte in the first cycle, which triggers the formed solid electrolyte interface . This interfacial layer serves a critical role in many commercial batteries . Solid electrolyte interface layers can decompose at a lower temperature, and then the intercalated lithium will directly react with the electrolyte .…”

Section: Discussionmentioning

confidence: 99%

“…25 This interfacial layer serves a critical role in many commercial batteries. 26 Solid electrolyte interface layers can decompose at a lower temperature, and then the intercalated lithium will directly react with the electrolyte. 16 According to Biensan et al, 27 the exothermic reactions between intercalated lithium and electrolyte or binder were the main heat sources of thermal runaway.…”

Section: Temperature Variation At Different Socsmentioning

confidence: 99%

Theoretical analysis of lithium‐ion battery failure characteristics under different states of charge

Jiang

Wang

et al. 2018

Fire and Materials

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Summary Lithium‐ion batteries (LIBs) are extensively applied in various portable electronic equipment because of their high energy density power. However, accidents related to LIBs frequently occur. This study focuses on failure results, characteristics, and phenomena. Lithium‐ion batteries under different states of charge (SOCs) (0%, 30%, 50%, 80%, 100%, and 120%) at high temperatures have been investigated with the thermal abuse test. During the experiments, several typical failure processes were captured. According to the phenomena, 2 failure modes (smoke and jet fire) and 3 stages (primary reaction, tempestuous reaction in the middle time period, and extinguishing reaction in the final stage) were observed. A substantial amount of gas was vented, and jet fire was detected in the middle period. Only gas vented when the SOC was lower than 50%, whereas vented gas and jet fire were detected simultaneously when the SOC exceeded 50%. The results indicated combustible behaviors and exothermic reactions related to the SOC. An increase in the SOC caused a decrease in the thermal runaway initial temperature and the maximum increase in temperature. A higher SOC determined intense chemical reactions in the cell at higher temperatures, which caused a significant amount of materials to spew out of the batteries as well as additional mass loss. Relationships between failure characteristics and internal reactions were analyzed. The SOC should be lower than 50% in transportation or storage. The intercalated lithium capacities were the main reason for the series of domino reactions, which caused runaway in the terminal. These studies can serve as a reference for safety applications, transportation, and loss prevention in LIBs.

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Opening the window for aqueous electrolytes

Abstract: Lithium batteries can operate with a safer “water-in-salt” electrolyte [Also see Research Article by Suo et al. ]

Cited by 94 publications

References 7 publications

Hierarchical Structures Based on Two‐Dimensional Nanomaterials for Rechargeable Lithium Batteries

Hierarchical Structures Based on Two‐Dimensional Nanomaterials for Rechargeable Lithium Batteries

A Self‐Healing Aqueous Lithium‐Ion Battery

Theoretical analysis of lithium‐ion battery failure characteristics under different states of charge

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