Self‐Protection of Electrochemical Storage Devices via a Thermal Reversible Sol–Gel Transition

Yang, Hui; Liu, Zhiyuan; Chandran, Bevita K.; Deng, Jiyang; Yu, Jiancan; Qi, Dianpeng; Li, Wenlong; Tang, Yuxin; Zhang, Chenguang; Chen, Xiao

doi:10.1002/adma.201502484

Cited by 98 publications

(102 citation statements)

References 58 publications

Supporting

Mentioning

102

Contrasting

Order By: Relevance

“…[ 1–6 ] In particular, integrating stimulus‐responsive functions into rechargeable batteries shows great potential to revolutionize electrochemical energy storage systems for future smart devices. [ 7–24 ] Currently, the three most eye‐catching stimulus‐responsive batteries are temperature‐responsive Li‐ion batteries, [ 11,14,16,20 ] photo‐responsive Li‐ion batteries, [ 7,17,18 ] and self‐healing Li‐ion batteries. [ 8,13,15,19 ] Despite the availability of aforementioned stimulus‐responsive batteries, the developed stimulus responses for rechargeable batteries are still sparse owing to the complexity and compatibility of battery architectures.…”

Section: Figurementioning

confidence: 99%

A Stimulus‐Responsive Zinc–Iodine Battery with Smart Overcharge Self‐Protection Function

et al. 2020

View full text Add to dashboard Cite

Zinc-iodine aqueous batteries (ZIABs) are highly attractive for grid-scale energy storage due to their high theoretical capacities, environmental friendliness, and intrinsic non-flammability. However, because of the close redox potential of Zn stripping/platting and hydrogen evolution, slight overcharge of ZIABs would induce drastic side reactions, serious safety concerns, and battery failure. A novel type of stimulus-responsive zinc-iodine aqueous battery (SR-ZIAB) with fast overcharge self-protection ability is demonstrated by employing a smart pH-responsive electrolyte. Operando spectroelectrochemical characterizations reveal that the battery failure mechanism of ZIABs during overcharge arises from the increase of electrolyte pH induced by hydrogen evolution as well as the consequent irreversible formation of insulating ZnO at anode and soluble Zn(IO 3 ) 2 at cathode. Under overcharge conditions, the designed SR-ZIABs can be rapidly switched off with capacity degrading to 6% of the initial capacity, thereby avoiding continuous battery damage. Importantly, SR-ZIABs can be switched on with nearly 100% of capacity recovery by re-adjusting the electrolyte pH. This work will inspire the development of aqueous Zn batteries with smart self-protection ability in the overcharge state.Stimulus-responsive materials and devices are attracting intensive attention because of the ever-increasing demand for intelligent devices. [1][2][3][4][5][6] In particular, integrating stimulus-responsive functions into rechargeable batteries shows great potential to revolutionize electrochemical energy storage systems for future smart devices. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] Currently, the three most eye-catching stimulus-responsive batteries are temperature-responsive Li-ion batteries, [11,14,16,20] photo-responsive Li-ion batteries, [7,17,18] and self-healing Li-ion batteries. [8,13,15,19] Despite the availability of aforementioned stimulus-responsive batteries, the developed stimulus responses for rechargeable batteries are still sparse owing to the complexity and compatibility of battery architectures. [24] Moreover, the reported stimulus-responsive functions are mainly integrated into Li-ion batteries. [8,[13][14][15][16][17][18][19][20] However, the limited Li resources and high flammability of Li-ion batteries severely impede their commercial applications for stationary energy storage systems. Therefore, it is highly desired to explore new stimulus-responsive systems beyond Li-ion batteries.As prospective alternatives for Li-ion batteries, rechargeable zinc-iodine aqueous batteries (ZIABs) are emerging for largescale energy storage systems because of high theoretical capacities and energy densities (around 169 mAh g −1 and 220 Wh kg −1 based on the total mass of active cathode and anode materials), abundant raw materials, environmental friendliness, non-flammable aqueous electrolytes, and simplified battery packaging technology in air. [25][26][27][28][29][30][31][32][33][34] However, ZIABs su...

show abstract

Section: Figurementioning

confidence: 99%

A Stimulus‐Responsive Zinc–Iodine Battery with Smart Overcharge Self‐Protection Function

et al. 2020

View full text Add to dashboard Cite

show abstract

Section: Wwwadvenergymatdementioning

confidence: 99%

“…A sol-gel electrolyte [132] using a thermally responsive poly(N-isopropylacrylamide-co-acrylamide) (PNIPAM/AM) was thus investigated for a self-protection supercapacitor (Figure 4g). With the increasing temperature, the thermal copolymers would form hydrogels through hydrophobic association and the migration of conductive ions between the electrodes was inhibited.…”

Section: Wwwadvenergymatdementioning

confidence: 99%

Gel Polymer Electrolytes for Electrochemical Energy Storage

Cheng

Pan

Zhao

et al. 2017

Advanced Energy Materials

721

562

View full text Add to dashboard Cite

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 ...

show abstract

“…8c, d), which verified the reversibility of the polymer electrolyte. Similarly, a thermal-responsive copolymer composed of PNIPAM and acrylamide was synthesized through free radical polymerization by Yang et al [73]. This copolymer was used for the self-protection of supercapacitors because it could undergo a thermally reversible sol-gel transition with temperature change (Fig.…”

Section: Responsive Gpesmentioning

confidence: 99%

Safety regulation of gel electrolytes in electrochemical energy storage devices

2019

Sci. China Mater.

View full text Add to dashboard Cite

Electrochemical energy storage devices, such as lithium ion batteries (LIBs), supercapacitors and fuel cells, have been vigorously developed and widely researched in past decades. However, their safety issues have appealed immense attention. Gel electrolytes (GEs), with a special state in-between liquid and solid electrolytes, are considered as the most promising candidates in electrochemical energy storage because of their high safety and stability. This review summarized the recent progresses made in the application of GEs in the safety regulation of the electrochemical energy storage devices. Special attention was paid to the gel polymer electrolytes, the organic low molecule-mass GEs, as well as the fumed silica-based and siloxane-based GEs. Finally, the current challenges and future directions were proposed in terms of the development of GEs.

show abstract

Self‐Protection of Electrochemical Storage Devices via a Thermal Reversible Sol–Gel Transition

Cited by 98 publications

References 58 publications

A Stimulus‐Responsive Zinc–Iodine Battery with Smart Overcharge Self‐Protection Function

A Stimulus‐Responsive Zinc–Iodine Battery with Smart Overcharge Self‐Protection Function

Gel Polymer Electrolytes for Electrochemical Energy Storage

Safety regulation of gel electrolytes in electrochemical energy storage devices

Contact Info

Product

Resources

About