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Ravi Shanker Babu

Other affiliations: Alagappa University
Bio: Ravi Shanker Babu is an academic researcher from VIT University. The author has contributed to research in topics: Ionic conductivity & Thermal stability. The author has an hindex of 10, co-authored 22 publications receiving 318 citations. Previous affiliations of Ravi Shanker Babu include Alagappa University.

Papers
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Journal ArticleDOI
TL;DR: In this article, the effect of inorganic filler on the conductivity of the blended polymer electrolyte was studied, and the role of ceramic phase is to reduce the melting temperature which is ascertained from the thermogravimetric/differential thermal analysis.

89 citations

Journal ArticleDOI
TL;DR: In this paper, a hybrid, solid polymer electrolyte films consisting of poly (vinyl chloride), poly (acrylonitrile) and propylene carbonate (PC) with different concentrations of LiClO 4 are prepared by means of a using solvent-casting technique.

50 citations

Journal ArticleDOI
13 Jun 2021-Polymers
TL;DR: An overview of biopolymers and synthetic polymer-based nanocomposites, which have promising applications in the biomedical research field, such as wound dressings, wound healing, tissue engineering, drug delivery, and medical implants, can be found in this article.
Abstract: Biopolymers are materials obtained from a natural origin, such as plants, animals, microorganisms, or other living beings; they are flexible, elastic, or fibrous materials. Polysaccharides and proteins are some of the natural polymers that are widely used in wound dressing applications. In this review paper, we will provide an overview of biopolymers and synthetic polymer-based nanocomposites, which have promising applications in the biomedical research field, such as wound dressings, wound healing, tissue engineering, drug delivery, and medical implants. Since these polymers have intrinsic biocompatibility, low immunogenicity, non-toxicity, and biodegradable properties, they can be used for various clinical applications. The significant advancements in materials research, drug development, nanotechnology, and biotechnology have laid the foundation for changing the biopolymeric structural and functional properties. The properties of biopolymer and synthetic polymers were modified by blending them with nanoparticles, so that these materials can be used as a wound dressing application. Recent wound care issues, such as tissue repairs, scarless healing, and lost tissue integrity, can be treated with blended polymers. Currently, researchers are focusing on metal/metal oxide nanomaterials such as zinc oxide (ZnO), cerium oxide (CeO2), silver (Ag), titanium oxide (TiO2), iron oxide (Fe2O3), and other materials (graphene and carbon nanotubes (CNT)). These materials have good antimicrobial properties, as well as action as antibacterial agents. Due to the highly antimicrobial properties of the metal/metal oxide materials, they can be used for wound dressing applications.

47 citations

Journal ArticleDOI
TL;DR: In this article, LiBF 4 was incorporated into a PVdF-PVC based polymer blend and thin electrolytes were prepared by solution casting technique to investigate the effects of salt concentration.

45 citations

Journal ArticleDOI
01 Feb 2009-Ionics
TL;DR: In this article, the effect of TiO2 concentration in the unplasticized PVC-PEG polymer electrolyte system was investigated and the XRD and FTIR studies confirmed the formation of a polymer-salt complex.
Abstract: The blend-based polymer electrolyte consisting of poly (vinyl chloride) (PVC) and poly (ethylene glycol) (PEG) as host polymers and lithium perchlorate (LiClO4) as the complexing salt was studied. An attempt was made to investigate the effect of TiO2 concentration in the unplasticized PVC–PEG polymer electrolyte system. The XRD and FTIR studies confirm the formation of a polymer–salt complex. The conductivity results indicate that the incorporation of ceramic filler up to a certain concentration (15 wt.%) increases the ionic conductivity and upon further addition the conductivity decreases. The maximum ionic conductivity 0.012 × 10−4 S cm−1 is obtained for PVC–PEG–LiClO4–TiO2 (75–25–5–15) system. Thermal stability of the polymer electrolyte is ascertained from TG/DTA studies.

35 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the recent developments and the characteristics of membrane separators for rechargeable lithium-ion batteries are reviewed and the outlook and future directions in this research field are also given.
Abstract: In this paper, the recent developments and the characteristics of membrane separators for lithium-ion batteries are reviewed. In recent years, there have been intensive efforts to develop advanced battery separators for rechargeable lithium-ion batteries for different applications such as portable electronics, electric vehicles, and energy storage for power grids. The separator is a critical component of lithium-ion batteries since it provides a physical barrier between the positive and negative electrodes in order to prevent electrical short circuits. The separator also serves as the electrolyte reservoir for the transport of ions during the charging and discharging cycles of a battery. The performance of lithium-ion batteries is greatly affected by the materials and structure of the separators. This paper introduces the requirements of battery separators and the structure and properties of five important types of membrane separators which are microporous membranes, modified microporous membranes, non-woven mats, composite membranes and electrolyte membranes. Each separator type has inherent advantages and disadvantages which influence the performance of lithium-ion batteries. The structures, characteristics, manufacturing, modification, and performance of separators are described in this review paper. The outlook and future directions in this research field are also given.

1,077 citations

Journal ArticleDOI
TL;DR: In this paper, a comparison of the conductivities of solid-electrolyte materials being used or developed for use in lithium-ion batteries is presented, where inorganic ceramic and organic polymer solid electrolytes are reviewed.

1,015 citations

Journal ArticleDOI
TL;DR: In this article, state-of-the-art polymer electrolytes are discussed with respect to their electrochemical and physical properties for their application in lithium polymer batteries, and the incorporation of inorganic fillers into GPEs to improve their mechanical strength as well as their transport properties and electrochemical properties is discussed.
Abstract: In this review, state-of-the-art polymer electrolytes are discussed with respect to their electrochemical and physical properties for their application in lithium polymer batteries. We divide polymer electrolytes into the two large categories of solid polymer electrolytes and gel polymer electrolytes (GPE). The performance requirements and ion transfer mechanisms of polymer electrolytes are presented at first. Then, solid polymer electrolyte systems, including dry solid polymer electrolytes, polymer-in-salt systems (rubbery electrolytes), and single-ion conducting polymer electrolytes, are described systematically. Solid polymer electrolytes still suffer from poor ionic conductivity, which is lower than 10−5 S cm−1. In order to further improve the ionic conductivity, numerous new types of lithium salt have been studied and inorganic fillers have been incorporated into solid polymer electrolytes. In the section on gel polymer electrolytes, the types of plasticizer and preparation methods of GPEs are summarized. Although the ionic conductivity of GPEs can reach 10−3 S cm−1, their low mechanical strength and poor interfacial properties are obstacles to their practical application. Significant attention is paid to the incorporation of inorganic fillers into GPEs to improve their mechanical strength as well as their transport properties and electrochemical properties.

969 citations

Journal ArticleDOI
Rusong Chen1, Qinghao Li1, Xiqian Yu1, Liquan Chen1, Hong Li1 
TL;DR: This review presents an overview on the scientific challenges, fundamental mechanisms, and design strategies for solid-state batteries, specifically focusing on the stability issues ofSolid-state electrolytes and the associated interfaces with both cathode and anode electrodes.
Abstract: Solid-state batteries have been attracting wide attention for next generation energy storage devices due to the probability to realize higher energy density and superior safety performance compared with the state-of-the-art lithium ion batteries. However, there are still intimidating challenges for developing low cost and industrially scalable solid-state batteries with high energy density and stable cycling life for large-scale energy storage and electric vehicle applications. This review presents an overview on the scientific challenges, fundamental mechanisms, and design strategies for solid-state batteries, specifically focusing on the stability issues of solid-state electrolytes and the associated interfaces with both cathode and anode electrodes. First, we give a brief overview on the history of solid-state battery technologies, followed by introduction and discussion on different types of solid-state electrolytes. Then, the associated stability issues, from phenomena to fundamental understandings, are intensively discussed, including chemical, electrochemical, mechanical, and thermal stability issues; effective optimization strategies are also summarized. State-of-the-art characterization techniques and in situ and operando measurement methods deployed and developed to study the aforementioned issues are summarized as well. Following the obtained insights, perspectives are given in the end on how to design practically accessible solid-state batteries in the future.

688 citations

Journal ArticleDOI
TL;DR: In this paper, a review discusses opportunities for membrane technologies in water and energy sustainability by analyzing their potential applications and current status; providing emerging technologies and scrutinizing research and development challenges for membrane materials in this field.

308 citations