A Self‐Healing Aqueous Lithium‐Ion Battery

Zhao, Yang; Zhang, Ye; Sun, Hao; Dong, Xiaoli; Cao, Jingyu; Wang, Lie; Xu, Yifan; Ren, Jing; Hwang, Yoohwa; Son, In Hyuk; Huang, Xi; Wang, Yonggang; Peng, Huisheng

doi:10.1002/anie.201607951

Cited by 207 publications

(159 citation statements)

References 40 publications

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“…[152] The Li 2 SO 4 /CMC GPE was composed of a physically cross-linked CMC gel and Li 2 SO 4 aqueous solution, which showed a decent ionic conductivity of 0.12 S cm −1 at room temperature. Different from the combustible and toxic organic electrolytes, the aqueous Li 2 SO 4 /CMC GPE was nontoxic and stable in air.…”

Section: Gpes With Self-healing Abilitymentioning

confidence: 99%

Gel Polymer Electrolytes for Electrochemical Energy Storage

Cheng

Pan

Zhao

et al. 2017

Advanced Energy Materials

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783

562

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storage devices with adjustable shapes and high flexibility, which is promising for the burgeoning portable and wearable electronics. [7][8][9] Furthermore, the flexibility and elasticity of GPEs are also prone to tolerate the volume change of electrode materials and the dendrites of lithium metal during charge and discharge processes. [10][11][12][13] As a consequence, GPEs have become one of the most desirable alternatives among various electrolytes for the electrochemical energy storage devices, and significant progress has been made in lithium-ion batteries (LIBs), supercapacitors (SCs), lithium-oxygen (Li-O 2 ) batteries as well as the other kinds of electrochemical energy storage devices, such as sodium-ion batteries, lithium-sulfur batteries, fuel cells, and zinc-air batteries. [14][15][16] In order to meet the requirements of wearable devices for flexibility and deformability, more special GPEs with tough, [17] stretchable, [18] and compressible [19] functionalities have been also developed.Typically, a polymeric framework is adopted in GPEs as host material, providing high mechanical integrity. Several criteria for a good polymer host lie in: [20][21][22] (i) fast segmental motion of polymer chain; (ii) special groups promoting the dissolution of salts; (iii) low glass transition temperature (T g ); (iv) high molecular weight; (v) wide electrochemical window; (vi) high degradation temperature. Within the framework, the salts in the GPEs serve as the sources of the charge carriers, which are generally required to have large anions and low dissociation energy for easier dissociating-induced free/mobile ions. According to the types of electrolytes, there are four categories of GPEs based on proton, [23] alkaline, [24] conducting salts, and ionic liquids (ILs). [25] The criteria for an appropriate electrolyte include: [26][27][28] (i) good dissociation without forming ion pairs or ion aggregation; (ii) high thermal, chemical, and electrochemical stability; (iii) high ionic conductivity. In order to dissolve both the polymer hosts and electrolytic salts, the organic/ aqueous solvents are introduced to provide the medium for ionic conduction. A good solvent should simultaneously have high dielectric constant (ɛ > 15), donor number for more dissociation of ion and chemical and electrochemical stability. Organic solvents normally include ethylene carbonate (EC), propylene carbonate (PC), diethyl carbonate (DEC), dimethyl carbonate (DMC), dimethyl formamide (DMF), dimethyl sulphoxide, ethyl methyl carbonate, and tetrahydrofuran.To prepare a high-performance GPE, it is essential to select the species of host polymer, solvent, and electrolytic salt, and then blend them by solution or melt processes, such as casting With the booming development of flexible and wearable electronics, their safety issues and operation stabilities have attracted worldwide attentions. Compared with traditional liquid electrolytes, gel polymer electrolytes (GPEs) are preferred due to their higher safety and adaptability to the design of ...

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Section: Gpes With Self-healing Abilitymentioning

confidence: 99%

Gel Polymer Electrolytes for Electrochemical Energy Storage

Cheng

Pan

Zhao

et al. 2017

Advanced Energy Materials

Self Cite

783

562

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“…Further study of the self-healing properties and their effect on battery design will be addressed in the future. 28 Further structural analysis was necessary to obtain thorough understanding of the materials. Even though poly(S-co-EAE) with high sulfur contents are insoluble due to the high amount of polysulfide chains, a soluble sample could be prepared with low sulfur content of 24 wt% (S-EAE-76, molar ratio of EAE : elemental sulfur = 1 : 2), enabling characterization with solution-based techniques.…”

Section: Resultsmentioning

confidence: 99%

A sulfur–eugenol allyl ether copolymer: a material synthesized via inverse vulcanization from renewable resources and its application in Li–S batteries

Hoefling

Nguyen

Lee

et al. 2017

Mater. Chem. Front.

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The demand for environmentally friendly and sustainable resources have dramatically increased in scientific and technological areas including energy storage systems and production of new functional materials. Sulfur copolymers with high sulfur contents up to 90 wt% were prepared via inverse vulcanization from environment-friendly, sustainable raw materials: cost-effective waste-product elemental sulfur and eugenol allylether (EAE), which is obtained from clove oil. Thermal properties and electrochemical activities of the resulting poly(S-co-EAE) materials can be tuned by controlling EAE:S feed ratio. Employed as cathode materials in Li-S batteries, the copolymer with 90 wt% sulfur content provides a good cycling stability at the capacity ~650 mAhg -1 and high coulombic efficiencies (> 99 %) over 100 cycles.

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Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…[139][140][141][142][143] The low stretchability can be attributed to the unavoidable crack generated in rigid electrodes during repeating stretching process, which leads to the degradation or even loss of electrochemical performance of Li-ion batteries. As discussed above, the Si electrodes with self-healing polymer binder could withstand the generated stress and heal cracks inside the electrodes, providing a promising platform to design the stretchable Si electrodes for Li-ion batteries.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…Zhao and co-workers presented the first example of all-solid-state and flexible aqueous Li-ion batteries that can self-heal themselves after breaking. [143] The self-healing aqueous Li-ion batteries were fabricating by designing aligned CNT sheets loaded with LiMn 2 O 4 and LiTi 2 (PO 4 ) 3 active nanoparticles on a self-healing polymer substrate as electrodes, and lithium sulfate/sodium carboxymethylcellulose as both hydrogel electrolyte and separator (Figure 12a). The self-healing polymer served as the support substrates for both CNT sheets and active nanoparticles, thus endowing the electrodes with good electrical self-healing performance.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

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Self‐Healing Materials for Next‐Generation Energy Harvesting and Storage Devices

Chen

Wang

Yang

et al. 2017

Advanced Energy Materials

228

174

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Because of the great breakthroughs of self‐healing materials in the past decade, endowing devices with self‐healing ability has emerged as a particularly promising route to effectively enhance the device durability and functionality. This article summarizes recent advances in self‐healing materials developed for energy harvesting and storage devices (e.g., nanogenerators, solar cells, supercapacitors, and lithium‐ion batteries) over the past decade. This review first introduces the main self‐healing mechanisms among different materials including insulators, electrical conductors, semiconductors, and ionic conductors. Then, the basic concepts, fabrication techniques, and healing performances of the newly developed self‐healing energy harvesting (nanogenerators and solar cells) and storage (supercapacitors and lithium‐ion batteries) devices are described in detail. Finally, the existing challenges and promising solutions of self‐healing materials and devices are discussed.

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A Self‐Healing Aqueous Lithium‐Ion Battery

Cited by 207 publications

References 40 publications

Gel Polymer Electrolytes for Electrochemical Energy Storage

Gel Polymer Electrolytes for Electrochemical Energy Storage

A sulfur–eugenol allyl ether copolymer: a material synthesized via inverse vulcanization from renewable resources and its application in Li–S batteries

Self‐Healing Materials for Next‐Generation Energy Harvesting and Storage Devices

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