Polymerized Ionic Networks with High Charge Density: Quasi‐Solid Electrolytes in Lithium‐Metal Batteries

Zhang, Pengfei; Li, Mingtao; Yang, Bolun; Fang, Youxing; Jiang, Xueguang; Veith, Gabriel M.; Sun, Xiao‐Guang; Dai, Sheng

doi:10.1002/adma.201502855

Cited by 111 publications

(71 citation statements)

References 60 publications

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“…A broad literature has demonstrated their promising performances and their ability to gather desirable properties and functions suitable for a wide range of applications including dye sensitized solar cells, fuel cells, batteries, supercapacitors, sensors, actuators, field effect transistors, electrochromic devices, separation membranes, catalysis, antibiofouling surfaces and analytical chemistry. 3,8,[12][13][14][15][16][17][18][19][20] After briefly describing the preparation and structure of classical PILs, this feature article will focus on the latest developments regarding the synthesis of 1,2,3-triazolium-based PILs (TPILs). Indeed, in less than three years a remarkably rich array of TPILs with competitive properties has been developed by merging the inspirations taken from both the field of molecular 1,2,3-triazoliums and the numerous combinations of the click chemistry philosophy with macromolecular engineering.…”

Section: Figmentioning

confidence: 99%

Poly(1,2,3-triazolium)s: a new class of functional polymer electrolytes

2016

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Poly(ionic liquid)s (PILs) are a unique class of polyelectrolytes having properties suited for modern technological applications such as electrochemical devices (batteries, supercapacitors, light-emitting electrochemical cells), ion-gated field effect transistors, electrochromic devices, fuel cells, dye sensitized solar cells, catalysis, or soft robotics. Their structure and properties can be finely tuned by unlimited combinations issued from extended pools of cationic and anionic building blocks. In a constant quest for the development of solid polymer electrolytes with enhanced physical, mechanical and (electro)chemical properties, a new class of PILs based on 1,2,3-triazolium cations has been recently developed. Their preparation takes advantage of the beneficial features of the multiple combinations between the Click chemistry philosophy with macromolecular engineering techniques to afford tunable and highly functional ion conducting materials thus stretching out the actual boundaries of PILs macromolecular design. This feature article summarizes the different strategies developed so far for the synthesis of 1,2,3-triazolium-based PILs (TPILs) since their first introduction in 2013.

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Section: Figmentioning

confidence: 99%

Poly(1,2,3-triazolium)s: a new class of functional polymer electrolytes

2016

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“…In comparison, polymer electrolyte improves the contact matters because of its flexibility, but the low ion conductivity under room temperature and narrow electrochemical window greatly impose restrictions on its further applications. Hence, in order to possibly solve above mentioned issues, gel polymer electrolyte (GPE) with relatively higher ion conductivity is expected to be an appropriate candidate to realize the uniform deposition of lithium metal, forming a robust SEI layer above lithium metal surface 21, 22, 23, 24, 25, 26, 27. Additionally, in order to improve ion conductivity of gel electrolytes, multifunctional polymers were employed by researchers to form rigid‐flexible cross‐linked network structures 28, 29, 30, 31.…”

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confidence: 99%

A Dual‐Salt Gel Polymer Electrolyte with 3D Cross‐Linked Polymer Network for Dendrite‐Free Lithium Metal Batteries

et al. 2018

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Lithium metal batteries show great potential in energy storage because of their high energy density. Nevertheless, building a stable solid electrolyte interphase (SEI) and restraining the dendrite growth are difficult to realize with traditional liquid electrolytes. Solid and gel electrolytes are considered promising candidates to restrain the dendrites growth, while they are still limited by low ionic conductivity and incompatible interphases. Herein, a dual‐salt (LiTFSI‐LiPF6) gel polymer electrolyte (GPE) with 3D cross‐linked polymer network is designed to address these issues. By introducing a dual salt in 3D structure fabricated using an in situ polymerization method, the 3D‐GPE exhibits a high ionic conductivity (0.56 mS cm−1 at room temperature) and builds a robust and conductive SEI on the lithium metal surface. Consequently, the Li metal batteries using 3D‐GPE can markedly reduce the dendrite growth and achieve 87.93% capacity retention after cycling for 300 cycles. This work demonstrates a promising method to design electrolytes for lithium metal batteries.

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“…At 30 °C, the ionic conductivity of X‐POSS‐IL‐LiTFSI is 5.4×10 −5 S/cm, which is comparable with the PEO functionalized POSS electrolytes . It is known both theoretically and experimentally that the addition of room temperature ionic liquids into polymer electrolytes promotes Li + conduction ,,,,. The ionic conductivity of EMITFSI reaches 1.06×10 −2 S ⋅ cm −1 at 30 °C .…”

Section: Resultsmentioning

confidence: 72%

Ion Pair Integrated Organic‐Inorganic Hybrid Electrolyte Network for Solid‐State Lithium Ion Batteries

et al. 2018

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A class of organic‐inorganic hybrid electrolyte with ion pair integrated network (X‐POSS‐IL‐LiTFSI) has been prepared by crosslinking of oligomeric octasilsesquioxanes grafted with imidazolium‐based ionic liquids for solid state lithium ion battery applications. X‐POSS‐IL‐LiTFSI is thermally stable and highly amorphous, and shows high ionic conductivities and excellent electrochemical stability. With further immobilization of a small fraction of ionic liquid, the ionic conductivity of X‐POSS‐IL‐LiTFSI has been significantly improved, e. g. 1.4×10−4 S/cm at ambinet temperature, to the level required by the practical battery applications, while maintaining the demensional integity. The coin cells of lithium batteries with the plasticized X‐POSS‐IL‐LiTFSI electrolytes exhibit high specific capacities at both ambient and elevated temperatures.

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Polymerized Ionic Networks with High Charge Density: Quasi‐Solid Electrolytes in Lithium‐Metal Batteries

Cited by 111 publications

References 60 publications

Poly(1,2,3-triazolium)s: a new class of functional polymer electrolytes

Poly(1,2,3-triazolium)s: a new class of functional polymer electrolytes

A Dual‐Salt Gel Polymer Electrolyte with 3D Cross‐Linked Polymer Network for Dendrite‐Free Lithium Metal Batteries

Ion Pair Integrated Organic‐Inorganic Hybrid Electrolyte Network for Solid‐State Lithium Ion Batteries

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