Lithium‐Ion Batteries with a Wide Temperature Range Operability Enabled by Highly Conductive sp<sup>3</sup> Boron‐Based Single Ion Polymer Electrolytes

Zhang, Yunfeng; Sun, Yubao; Xu, Guodong; Cai, Weiwei; Rohan, Rupesh; An, Lin; Cheng, Hansong

doi:10.1002/ente.201402010

Cited by 26 publications

(26 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[20] Unfortunately, the low lithium ion transference number ( ) < + t Li 0.3 , associated with the high mobility of the salt anion, results in the formation of strong concentration gradients during battery operation with deleterious effects on the lithium dendritic growth and limited power delivery. [22] In addition, the lithium ion transference number of SIPEs is close to unity, [23][24][25][26] whereas the value for the dual-ion (LiPF 6 ) electrolyte is as low as 0.3. Previous studies have demonstrated that SIPEs possess high thermal and water stability, wide electrochemical window, strong mechanical strength, and low cost.…”

Section: Introductionmentioning

confidence: 98%

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

Qin

Zhang

et al. 2019

Advanced Energy Materials

Self Cite

129

View full text Add to dashboard Cite

Herein, a novel electrospun single‐ion conducting polymer electrolyte (SIPE) composed of nanoscale mixed poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP) and lithium poly(4,4′‐diaminodiphenylsulfone, bis(4‐carbonyl benzene sulfonyl)imide) (LiPSI) is reported, which simultaneously overcomes the drawbacks of the polyolefin‐based separator (low porosity and poor electrolyte wettability and thermal dimensional stability) and the LiPF6 salt (poor thermal stability and moisture sensitivity). The electrospun nanofiber membrane (es‐PVPSI) has high porosity and appropriate mechanical strength. The fully aromatic polyamide backbone enables high thermal dimensional stability of es‐PVPSI membrane even at 300 °C, while the high polarity and high porosity ensures fast electrolyte wetting. Impregnation of the membrane with the ethylene carbonate (EC)/dimethyl carbonate (DMC) (v:v = 1:1) solvent mixture yields a SIPE offering wide electrochemical stability, good ionic conductivity, and high lithium‐ion transference number. Based on the above‐mentioned merits, Li/LiFePO4 cells using such a SIPE exhibit excellent rate capacity and outstanding electrochemical stability for 1000 cycles at least, indicating that such an electrolyte can replace the conventional liquid electrolyte–polyolefin combination in lithium ion batteries (LIBs). In addition, the long‐term stripping–plating cycling test coupled with scanning electron microscope (SEM) images of lithium foil clearly confirms that the es‐PVPSI membrane is capable of suppressing lithium dendrite growth, which is fundamental for its use in high‐energy Li metal batteries.

show abstract

Section: Introductionmentioning

confidence: 98%

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

Qin

Zhang

et al. 2019

Advanced Energy Materials

Self Cite

129

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4] The concept of single ion polymeric electrolyte (SIPE) was proposed with the aim to overcome most of the problems associated with the current electrolytes, [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] such as severe concentration polarization and potential safety hazard. [1][2][3][4] The concept of single ion polymeric electrolyte (SIPE) was proposed with the aim to overcome most of the problems associated with the current electrolytes, [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] such as severe concentration polarization and potential safety hazard.…”

Section: Introductionmentioning

confidence: 99%

A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

et al. 2015

Self Cite

View full text Add to dashboard Cite

We report a polysiloxane based single-ion conducting polymer electrolyte (SIPE) synthesized via hydrosilylation technique. Styrenesulfonyl (phenylsulfonyl) imide groups were grafted on the highly flexible polysiloxane chains followed by lithiation. The highly delocalized anionic charges in the grafted moiety give rise to weak association with lithium ions in the polymer matrix, resulting in lithium ion transference number close to unity (0.89) and remarkably high ionic conductivity (7.2 ×10 -4 Scm -1 ) at room temperature. The high flexibility arising from polysiloxane enables the glass transition temperature (T g ) to be below room temperature. The electrolyte membrane displays high thermal stability and a strong mechanical strength. A coin cell assembled with the membrane comprised of the electrolyte and poly(vinylidene-fluoride-cohexafluoropropene) (PVDF-HFP) performs remarkably well over a wide range of temperature with high charge-discharge rates.12 rule in a three step cyclic process.[36] Following the same mechanism, here, the vinylic part of SPSIK was attached to the polysiloxane chains upon addition of a Si-H bond.The grafting of SPSIK on PMHS chains followed by exchange of K + ions by Li + ions was clearly proven to be successful by FTIR and NMR spectra. As can be seen in the FTIR spectra of PMHS and SG (Fig. 1), the peak at 2167 cm -1 in PMHS, corresponding to Si-H bond, is disappeared in SG, which confirms the grafting of SPSIK. In addition, the peak at 1627 cm -1 in SPSIK, corresponding to the vinylic group, is also disappeared in SG, confirming the grafting, which consumes the vinylic group. Furthermore, the signature signal of Si-H, appears at 4.68 ppm ( 1 H NMR) in PMHS, and the three peaks in the range of 6.78 to 5.31 ppm ( 1 H NMR) in SPSIK corresponding to 3 vinylic protons, are disappeared in SG, validating the grafting of SP on the PMHS chains. [43,46]. Finally, the overall synthesis of SG electrolyte was confirmed by the coherence between the expected and the found values for all the elements, except for Si, in the elemental analysis. The deviation observed for Si is mainly attributed to the incomplete digestion of Si during the analysis, which was also noticed during the elemental analysis of commercial products of Si such as PMHS and poly(methylphenylsiloxane)(PMPS) ( Table S1 in Supporting Information). The GPC analysis of SG in the tetrahydrofuran (THF) mobile phase depicts the number average molecular weight (Mn) of 84,238, weight average molecular weight (Mw) of 150,230, and poly dispersity index (PDI) of 1.78 based on the polystyrene standard.

show abstract

“…The ionic conductivity of the membrane was calculated to be 1.47 Â 10 À4 S cm À1 at room temperature, which is comparable to the values of most reported gel SIPEs. 35,37 The highest ionic conductivity at 80 C is 5.32 Â 10 À4 S cm À1 . As a consequence, the glass transition temperature of the polymer is raised substantially (over 300 C).…”

Section: Resultsmentioning

confidence: 98%

A novel sp³Al-based porous single-ion polymer electrolyte for lithium ion batteries

Rohan

et al. 2015

RSC Adv.

Self Cite

View full text Add to dashboard Cite

We report synthesis of an Al-based porous gel single-ion polymer electrolyte, lithium poly (glutaric acid aluminate) (LiPGAA), using glutaric acid and lithium tetramethanolatoaluminate as the precursors. The three-dimensional network compound provides short lithium-ion transport pathways and allows organic solvents to be accommodated in the composite for rapid ion transport. The tetraalkoxyaluminate units in the material enable Li-ions to be weakly associated with the polymeric framework, leading to a high ionic conductivity of 1.47 Â 10 À4 S cm À1 at room temperature and a high Li-ion transference number of 0.8. A membrane of the polymer was prepared via a solution cast method with PVDF-HFP poly(vinylidene-fluoride-co-hexafluoropropene) followed by soaking in a solution of ethylene carbonate (EC) and propylene carbonate (PC) (v/v, 1 : 1). A Li-ion battery assembled with the composite membrane displays remarkable cyclability with nearly 100% coulombic efficiency over a wide temperature range.

show abstract

Lithium‐Ion Batteries with a Wide Temperature Range Operability Enabled by Highly Conductive sp³ Boron‐Based Single Ion Polymer Electrolytes

Cited by 26 publications

References 33 publications

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

A novel sp³Al-based porous single-ion polymer electrolyte for lithium ion batteries

Contact Info

Product

Resources

About

Lithium‐Ion Batteries with a Wide Temperature Range Operability Enabled by Highly Conductive sp3 Boron‐Based Single Ion Polymer Electrolytes

Cited by 26 publications

References 33 publications

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

Single‐Ion Conducting Electrolyte Based on Electrospun Nanofibers for High‐Performance Lithium Batteries

A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

A novel sp3Al-based porous single-ion polymer electrolyte for lithium ion batteries

Contact Info

Product

Resources

About

Lithium‐Ion Batteries with a Wide Temperature Range Operability Enabled by Highly Conductive sp³ Boron‐Based Single Ion Polymer Electrolytes

A novel sp³Al-based porous single-ion polymer electrolyte for lithium ion batteries