LiClO4-doped plasticized chitosan and poly(ethylene glycol) blend as biodegradable polymer electrolyte for supercapacitors

Sudhakar, Y.N.; Selvakumar, M.; Bhat, D. Krishna

doi:10.1007/s11581-012-0745-5

Cited by 98 publications

(43 citation statements)

References 49 publications

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“…11 Besides water, organic solvents such as PC, 330 EC and DMF 331 or their mixtures (e.g., PC-EC, 332 PC-EC-DMC, 333 and PC-EC 331 ) have also been commonly used as the plasticizers in GPEs. Gel polymer electrolytes.…”

Section: Solid-or Quasi-solid-state Electrolytes For Essmentioning

confidence: 99%

A review of electrolyte materials and compositions for electrochemical supercapacitors

et al. 2015

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Electrolytes have been identified as some of the most influential components in the performance of electrochemical supercapacitors (ESs), which include: electrical double-layer capacitors, pseudocapacitors and hybrid supercapacitors. This paper reviews recent progress in the research and development of ES electrolytes. The electrolytes are classified into several categories, including: aqueous, organic, ionic liquids, solid-state or quasi-solid-state, as well as redox-active electrolytes. Effects of electrolyte properties on ES performance are discussed in detail. The principles and methods of designing and optimizing electrolytes for ES performance and application are highlighted through a comprehensive analysis of the literature. Interaction among the electrolytes, electro-active materials and inactive components (current collectors, binders, and separators) is discussed. The challenges in producing high-performing electrolytes are analyzed. Several possible research directions to overcome these challenges are proposed for future efforts, with the main aim of improving ESs' energy density without sacrificing existing advantages (e.g., a high power density and a long cycle-life) (507 references).

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Section: Solid-or Quasi-solid-state Electrolytes For Essmentioning

confidence: 99%

A review of electrolyte materials and compositions for electrochemical supercapacitors

et al. 2015

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“…conductivity, electrochemical stability) required for non-toxic solidstate polymer batteries. [5][6][7] To this concern, there are some important features that a polymer should comply in order to be used as solid polymer electrolyte: It must be amorphous and remain soluble with high-concentrated lithium salt, or it can be formulated with plasticizers to increase its conductivity. Particularly for ion-conductive polymer electrolytes, the Tg is an important parameter that could influence their conductivity, since ion diffusion across polymer electrolytes is strongly coupled with the motion of the polymer chains, whereby it is necessary that Tg is as low as possible, or to formulate the material with an organic liquid.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Theoretical Insights of Green Chitosan Derivatives Presenting Enhanced Li⁺Ionic Conductivity

Cardoso¹,

Nava²,

García-Morán

et al. 2015

J. Phys. Chem. C

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The synthesis, thermal, dielectric and conductivity properties of functionalized chitosan polymer derivatives are evaluated to determine their potential uses as a non-toxic electrolyte/separator for lithium batteries. Deacetylated chitosan (DAC) at 97% is used as a precursor to prepare two derivatives: N-propylsulfonic acid chitosan (SC), chitosan with zwitterionic pendant groups (ZWC). These derivatives increase the polar character of pure chitosan, and significantly improve its solubility. Likewise, they are thermally stable up to 220 °C, and their glass transition temperatures (Tg) are located in the region where they decompose, except for SC (Tg=158 ºC). The incorporation of the sulfobetaine and zwitterionic pendant groups improves the ionic conductivity at least two orders of magnitude with respect to pure chitosan at 25 °C, without the use of plasticizers or further modifications. The salt addition (LiPF 6 or LiClO 4 ) to ZWC does not modify the conductivity, whence it is suggested that its increase is due to an electronic modification, such that the energy barriers for conducting the Li + across the ZWC become decreased (i.e. charge dislocation), rather than a salt dissociation. This experimental finding is confirmed with Density Functional Theory (DFT) calculations conducted with the SC and ZWC structures.

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“…It is found that there is no interaction between ethylene carbonate (EC) and chitosan but there is interaction between the LiCF 3 SO 3 salt and the EC plasticizer, the number of free ions originated from the LiCF 3 SO 3 salt dissociation has improved conductivity of the chitosan (CS). Sudhakar et al . researched the blend of CS and poly(ethylene glycol) (PEG) plasticized with EC and propylene carbonate (PC), as host polymer and LiClO 4 as a dopant were successfully prepared.…”

Section: Introductionmentioning

confidence: 99%

A Chitosan/Poly(ethylene oxide)‐Based Hybrid Polymer Composite Electrolyte Suitable for Solid‐State Lithium Metal Batteries

Wang

et al. 2020

ChemistrySelect

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Solid‐state electrolytes have good mechanical and thermal stability to meet the safety and performance of advanced lithium‐based rechargeable battery technologies. However, the drawbacks such as high interfacial impedance and low ionic conductivity of the solid‐state polymer electrolytes at room temperature are the current demanding challenges that need to be addressed. Here, we report hybrid polymer composite electrolyte that is composed of a chitosan composite polymer electrolyte soaked with a slightly liquid electrolyte. The hybrid polymer composite electrolyte has a high ionic conductivity about 6.8×10−4 S cm−1 with a low interfacial impedance at room temperature and outstanding flexibility. The lithium‐metal/LiFePO4 solid‐state cell using this hybrid polymer composite electrolyte can be operated at room temperature maintaining a high cathode capacity of 120 mA h g−1 for 130 cycles. This chitosan/poly(ethylene oxide)‐based hybrid polymer composite electrolyte system provides a promising direction for the creation of novel solid‐electrolyte, which meets both high ionic conductivity and low interfacial impedance requirements for practical solid‐polymer batteries.

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LiClO4-doped plasticized chitosan and poly(ethylene glycol) blend as biodegradable polymer electrolyte for supercapacitors

Cited by 98 publications

References 49 publications

A review of electrolyte materials and compositions for electrochemical supercapacitors

A review of electrolyte materials and compositions for electrochemical supercapacitors

Synthesis, Characterization, and Theoretical Insights of Green Chitosan Derivatives Presenting Enhanced Li⁺Ionic Conductivity

A Chitosan/Poly(ethylene oxide)‐Based Hybrid Polymer Composite Electrolyte Suitable for Solid‐State Lithium Metal Batteries

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LiClO4-doped plasticized chitosan and poly(ethylene glycol) blend as biodegradable polymer electrolyte for supercapacitors

Cited by 98 publications

References 49 publications

A review of electrolyte materials and compositions for electrochemical supercapacitors

A review of electrolyte materials and compositions for electrochemical supercapacitors

Synthesis, Characterization, and Theoretical Insights of Green Chitosan Derivatives Presenting Enhanced Li+Ionic Conductivity

A Chitosan/Poly(ethylene oxide)‐Based Hybrid Polymer Composite Electrolyte Suitable for Solid‐State Lithium Metal Batteries

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Synthesis, Characterization, and Theoretical Insights of Green Chitosan Derivatives Presenting Enhanced Li⁺Ionic Conductivity