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As NASA embarks on a renewed human presence in space, safe, human-rated, electrical energy storage and power generation technologies, which will be capable of demonstrating reliable performance in a variety of unique mission environments, will be required. To address the future performance and safety requirements for the energy storage technologies that will enhance and enable future NASA Constellation Program elements and other future aerospace missions, advanced rechargeable, lithium-ion battery technology development is being pursued with an emphasis on addressing performance technology gaps between state-of-the-art capabilities and critical future mission requirements. The material attributes and related performance of a lithium-ion cell's internal separator component are critical for achieving overall optimal performance, safety and reliability. This review provides an overview of the general types, material properties and the performance and safety characteristics of current separator materials employed in lithium-ion batteries, such as those materials that are being assessed and developed for future aerospace missions. Bladwin, Richard S. Glenn Research Center NASA/TM-2009-215590, E-16879
The handbook focuses on a complete outline of lithium-ion batteries. Just before starting with an exposition of the fundamentals of this system, the book gives a short explanation of the newest cell generation. The most important elements are described as negative / positive electrode materials, electrolytes, seals and separators. The battery disconnect unit and the battery management system are important parts of modern lithium-ion batteries. An economical, faultless and efficient battery production is a must today and is represented with one chapter in the handbook. Cross-cutting issues like electrical, chemical, functional safety are further topics. Last but not least standards and transportation themes are the final chapters of the handbook. The different topics of the handbook provide a good knowledge base not only for those working daily on electrochemical energy storage, but also to scientists, engineers and students concerned in modern battery systems.
To address the future performance and safety requirements for the electrical energy storage technologies that will enhance and enable future NASA manned aerospace missions, advanced rechargeable, lithium ion battery technology development is being pursued within the scope of the NASA Exploration Technology Development Program's (ETDP) Energy Storage Project. A critical cell-level component of a lithium-ion battery which significantly impacts both overall electrochemical performance and safety is the porous separator that is sandwiched between the two active cell electrodes. To support the selection of the optimal cell separator material(s) for the advanced battery technology and chemistries under development, laboratory characterization and screening procedures were established to assess and compare separator material-level attributes and associated separator performance characteristics.
Advanced Materials for Battery Separators focuses solely on battery separators and their significance, providing the reader with a detailed description of their use in both aqueous and non-aqueous batteries. Topics include separator requirements and classifications, as well as discussions of the different methods for the fabrication of separators, experimental techniques used for the characterization of separators, and their physical and chemical properties. It concludes with a look at the challenges and new technologies developed to improve the performance of separators. This book is a valuable reference for engineers, research scholars, and for graduates and post graduates primarily in the field of material science, electrochemistry, and polymer chemistry. It can also be useful for engineers and technologists working in both industry and the energy field. Provides a detailed discussion of separators used in battery applications Discusses the influence of nanofillers on separator performance and the analytical techniques used for the characterization of separators Explores the challenges and new technologies to improve the performance of separators
Polymer-Based Separators for Lithium-Ion Batteries: Production, Processing, and Properties takes a detailed, systematic approach to the development of polymer separators for lithium-ion batteries, supporting the reader in selecting materials and processes for high-performance polymer separators with enhanced properties. The book begins by introducing the polymeric materials that may be used for separators, as well as characterization techniques, before presenting the available technologies used to produce separators for use in lithium-ion batteries. Each technology is discussed in terms of the advantages and disadvantages of the chosen approach, with the properties of the separators made via each technology also summarized and compared in detail. In addition, areas for further development are addressed, and the limitations of current materials and separators in achieving those goals are highlighted. This is a valuable resource for scientists and engineers in the industry who work on polymer-based battery separators, polymers for electronic/energy applications, and new materials and processes for lithium-ion batteries. In academia, this book will be of interest to researchers and advanced students across the fields of polymer science, materials science, electronics, energy, and chemical engineering. Covers all current and new technologies used in the production of polymer battery separators for lithium-ion batteries Analyzes the connections between the various materials and processes, advantages and disadvantages, and resulting properties of different polymer-based separators Enables the reader to develop polymer separators that meet industry standards and property and performance requirements
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
During the past two decades, lithium-ion batteries (LIBs) have gained great success in the field of portable devices, and currently, are penetrating to the market of vehicles. Compared to the fast development of LIBs, little efforts have been dedicated to the separator, which is one of the most important components of LIBs. Primarily, the lithium-ion battery separator has two functions, one is to prevent direct contact between the positive and negative electrodes, and the other is to provide a path for effective ionic transportation. Currently, the separator market of LIBs is dominated by polyolefin materials such as polypropylene, polyethylene, and their combinations. However, the low thermal stability and poor wettability of polyolefin separators by the electrolyte result in state-of-art (SOA) LIBs with low power density, narrow range of operating temperature, and high cost. In this thesis, a novel cellulose-based membrane will be developed and be utilized as a separator of LIBs to address aforementioned issues. The well-established methods for papermaking will be adopted to fabricate two types of cellulose-based membrane separators; one is made of cellulose fibers and the other with cellulose fibers and cellulose nanocrystals (CNC). The effect of processing parameters, such as the solvents, ratio of CNC to cellulose fiber, and filtering method on the properties of membranes will be investigated. The achieved membranes will be evaluated by using advanced techniques, including force tensiometer, scanning electron microscopy, electrochemical characterizations, etc., to demonstrate superior properties of cellulose separators developed here.