Biomimetic ant-nest ionogel electrolyte boosts the performance of dendrite-free lithium batteries

Chen, Nan; Dai, Yujuan; Xing, Yi; Wang, Lili; Guo, Cui; Chen, Renjie; Guo, Shaojun; Wu, Feng

doi:10.1039/c7ee00988g

Cited by 230 publications

(169 citation statements)

References 40 publications

Supporting

Mentioning

162

Contrasting

Unclassified

Order By: Relevance

“…There was slightly increase of the current in the batteries made from PVDFÀ HFP, PVDFÀ HFP/IL, and PVDFÀ HFP/ IL/PDA GPEs before 4.75 V (vs. Na/Na +), indicating the high purity of the GPEs and the stable voltage up to 4.75 V. This result shows that introducing the ionic liquid and polydopamine did not affect the initial decomposition voltage of the GPE and the electrochemical window fully satisfies the requirements of SIBs. [37][38] As for the PVDFÀ HFP/IL electrolyte without polydopamine coating, the result followed the same trend ( Figure S3, Supporting Information). We attribute this result to the ionic liquid having outstanding oxidation stability whereas the organic electrolyte undergoes oxidative decomposition at high voltages.…”

Section: Resultssupporting

confidence: 62%

An Ionic Liquid/Poly(vinylidene fluoride‐co‐hexafluoropropylene) Gel‐Polymer Electrolyte with a Compatible Interface for Sodium‐Based Batteries

Xie

Huang

et al. 2019

ChemElectroChem

Self Cite

View full text Add to dashboard Cite

Ionic liquid gel-polymer electrolytes (GPEs) have attracted increasing attention, owing to their merits of safety and reliability. However, the high viscosity of ionic liquid requires better transmission channels for the polymer. Exploration of ionic liquid GPEs with high ionic conductivity and excellent transmission channels is a possible strategy to optimize the practicability of sodium-based technology. A flexible GPE with high ionic conductivity and excellent transmission channels is synthesized with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDFÀ HFP) as the base material blended with the waterinsoluble ionic liquid N-methyl-N-butyl piperidine difluorome-thylimide ([PP 14 ][TFSI]) by using a phase-inversion technique. A polydopamine coating is then introduced into the GPE to improve wettability and compatibility. The thermal decomposition temperature of the prepared gel-polymer films is greater than 450°C. Our activated GPE achieves good safety, a wide electrochemical window, and high ionic conductivity. When testing a sodium-ion battery with Prussian blue as the cathode, the batteries show good cycling performance. Our results suggest that the as-prepared GPE can be efficiently and safely used in sodium-ion batteries.[a] Dr. photoelectron spectra (XPS) using PHI Quantera-II scanning XPS microprobe. The contact angle of the membranes were conducted on a JY-82B contact angle apparatus. Electrochemical CharacterizationThe galvanostatic charge-discharge tests were performed on a LAND cycler (Wuhan Kingnuo Electronic Co.) at room temperature. Linear sweep voltammetry, cyclic voltammetry and electrochemical impedance spectroscopy were carried out on a CHI 660e electrochemical workstation (ChenHua Instruments Co.).

show abstract

Section: Resultssupporting

confidence: 62%

An Ionic Liquid/Poly(vinylidene fluoride‐co‐hexafluoropropylene) Gel‐Polymer Electrolyte with a Compatible Interface for Sodium‐Based Batteries

Xie

Huang

et al. 2019

ChemElectroChem

Self Cite

View full text Add to dashboard Cite

show abstract

“…Kim et al dispersed TiO 2 nanoparticles (< 70 nm) into aI L (Py 14 TFSI) to fabricateaHSSE, showing an ionic conductivity of 1.5 10 À3 Scm À1 at 20 8C. [55] Reproduced with permission.C opyright 2017,The Royal SocietyofC hemistry. Copyright2014,Wiley-VCH.…”

Section: Inorganic-liquid Hssesmentioning

confidence: 99%

“…[55] Ab iomimetic ant-nestH SSE (BAIE) was prepared by encapsulating IL into interconnected functional-group-modified SiO 2 (X-SiO 2 )c hannels. [55] Ab iomimetic ant-nestH SSE (BAIE) was prepared by encapsulating IL into interconnected functional-group-modified SiO 2 (X-SiO 2 )c hannels.…”

Section: Inorganic-liquid Hssesmentioning

confidence: 99%

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Liu

et al. 2018

Chemistry A European J

137

View full text Add to dashboard Cite

Conventional liquid electrolytes for lithium batteries usually suffer from irreversible decomposition and safety concerns. Solid state electrolytes (SSEs) have been considered as the key for advanced lithium batteries with improved energy density and safety, whereas challenges remain for polymer and inorganic SSEs. Recently, hybrid solid-state electrolytes (HSSEs) that integrate the merits of different electrolyte systems have been under intensive study. Herein, we summarize the recent progress of HSSEs with different compositions and structures. The design principle of each type of HSSEs are discussed, as well as their ionic conducting mechanism, electrochemical performance and effects of compositional/structural control. Finally, challenges and perspectives are provided for the future development of HSSEs and solid-state lithium batteries.

show abstract

“…The addition of fluorinated compounds in electrolyte, such as LiF, LiPF 6 , fluoroethylene carbonate, etc., can suppress the formation of Li dendrites by forming a stable and flexible solid electrolyte interface (SEI) layer on the surface of Li metal due to a strong electronic static interaction between F − and Li + . Solid‐state electrolytes are efficient to prevent dendrite propagation, including nanostructured carbon nitride polymer‐reinforced electrolyte, biomimetic ant‐nest ionic liquid based composite electrolyte, and anion‐immobilized composite electrolyte . In addition to the electrolyte, coatings on the separator with functionalized materials were able to yield a long stable life of the Li‐metal anode .…”

Section: Introductionmentioning

confidence: 99%

A Natural Biopolymer Film as a Robust Protective Layer to Effectively Stabilize Lithium‐Metal Anodes

Zhang

Gao

Wang

et al. 2018

Small

View full text Add to dashboard Cite

Li metal is considered as an ideal anode for Li-based batteries. Unfortunately, the growth of Li dendrites during cycling leads to an unstable interface, a low coulombic efficiency, and a limited cycling life. Here, a novel approach is proposed to protect the Li-metal anode by using a uniform agarose film. This natural biopolymer film exhibits a high ionic conductivity, high elasticity, and chemical stability. These properties enable a fast Li-ion transfer and feasiblity to accomodate the volume change of Li metal, resulting in a dendrite-free anode and a stable interface. Morphology characterization shows that Li ions migrate through the agarose film and then deposit underneath it. A full cell with the cathode of LiFPO and an anode contaning the agarose film exhibits a capacity retention of 87.1% after 500 cycles, much better than that with Li foil anode (70.9%) and Li-deposited Cu anode (5%). This study provides a promising strategy to eliminate dendrites and enhance the cycling ability of lithium-metal batteries through coating a robust artificial film of natural biopolymer on lithium-metal anode.

show abstract

Biomimetic ant-nest ionogel electrolyte boosts the performance of dendrite-free lithium batteries

Abstract: A new biomimetic ant-nest ionogel electrolyte was demonstrated to develop high-performance Li/Ni1/3Mn1/3Co1/3O2 and Li/Li4Ti5O12 solid-state cells.

Cited by 230 publications

References 40 publications

An Ionic Liquid/Poly(vinylidene fluoride‐co‐hexafluoropropylene) Gel‐Polymer Electrolyte with a Compatible Interface for Sodium‐Based Batteries

An Ionic Liquid/Poly(vinylidene fluoride‐co‐hexafluoropropylene) Gel‐Polymer Electrolyte with a Compatible Interface for Sodium‐Based Batteries

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

A Natural Biopolymer Film as a Robust Protective Layer to Effectively Stabilize Lithium‐Metal Anodes

Contact Info

Product

Resources

About