Aravindan V.,Nanyang Technological University |
Gnanaraj J.,Yardney Technical Products, Inc. |
Lee Y.-S.,Chonnam National University |
Madhavi S.,Nanyang Technological University
Chemical Reviews | Year: 2014
Apart from the mentioned applications, wind power generation, uninterruptible power sources, voltage sag compensation, photovoltaic power generation, CT and MRI scanners, and energy recovery systems in industrial machineries are worth mentioning. Carbonaceous materials are favored as EDLC components due to their high specific surface area, relatively low cost, chemical stability in solutions irrespective of the pH value, ease of synthesis protocols with tailored pore size distribution and its amphoteric nature that allows rich electrochemical properties from donor to acceptor state, and a wide range of operating temperatures. The combination reactions enable one to achieve higher energy density and specific capacitance than the EDLC counterpart. Conducting polymers and transition metal oxides are the perfect examples for pseudocapacitive materials.
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase II | Award Amount: 730.46K | Year: 2012
The goal of this project is to take silver-zinc battery technology to a new level for programs important to the Navy. Silver-Zinc batteries provide high energy and power density cells, and since the electrolyte is a water-based alkaline fluid, provide a comparatively safe battery. A disadvantage to this technology is large format cells, which are required to provide high power, do not provide comparable cycle life performance to competing systems. There are two main issues. One is the negative electrode, having redox products being zinc and zinc oxide, experiences non-uniform re-plating of the zinc upon charging. The mass tends toward the bottom of the current collector as the cell accumulates cycles. The other issue is the separator, commonly used cellophane, experiences degradation due to the strongly oxidative positive silver oxide electrode. The primary work will be to advance from the Phase I to the Phase II the further refinements of circumventing the shortcomings of silver/zinc. This includes incorporating binders with the negative electrodes to limit dissolution of the electrode while cycling and developing a non-cellulosic cellophane replacement. Also included will be advances in thermal pathway to remove heat from cells during discharge and providing an advanced silver/zinc battery management system.
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 148.73K | Year: 2013
Electric vehicles, hybrid electric vehicles, and plugin hybrid electric vehicles (EVs, HEVs, and PHEVs) are emerging technologies that can significantly reduce petroleum usage in the transportation sector. Widespread adoption of electricdrive vehicles will lower automobile operation costs and can significantly decrease emissions of greenhouse gases. However, for these technologies to be successful in todays market, a new generation of batteries with improved cost per kilowatthour is needed. Yardney Technical Products, Inc. (YTP), a world leader in advanced battery systems for specialty applications, proposes to develop a transformational battery design that will decrease weight and cost significantly. The proposed concept involves drastic design advancements that will eliminate a large portion of the inactive weight present in all stateoftheart lithiumion (Liion) cells. Additionally, high capacity anode materials with 3 times the specific capacity of commercial graphites will be used to further increase specific energy and energy density. Batteries which incorporate the proposed innovations will weigh 2030% less than stateoftheart technologies at the cell level.
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase II | Award Amount: 749.11K | Year: 2011
Li-ion batteries are attractive candidates for use as power sources in military, aerospace, commercial, and vehicular applications. Outstanding properties of Li-ion include longer battery life, reduced weight and size, lower maintenance costs, higher power capacity and higher energy densities. However, there are issues with making a truly safe Li-ion battery. For this project, Yardney has approached making a safer battery by incorporating modeling and testing, and based on that moving forward towards larger cells for Navy applications. Though a goal is to make a Li-ion cell incapable of failing, reality has us accepting a cell failure, but preventing that occurrence from propagating. Improvements include materials internal to the cell to decrease the risk of an event and its magnitude upon such an occurrence, and then considering cell geometry and inter-cell separators to 1) remove that heat as rapidly to a"safe zone"as possible, and 2) to block a majority of the heat from causing a neighboring cell to also reach it"s activation energy for thermal runaway. In addition, electronics play a major role in monitoring, and in this project Yardney is incorporating some of their latest electronics to provide a hearty monitoring system, and a safer Li-ion battery.
Agency: Department of Defense | Branch: Navy | Program: STTR | Phase: Phase I | Award Amount: 79.75K | Year: 2014
Yardney will design and develop a lightweight, safe, reliable, and cost-effective aircraft battery with improved thermal design and the use of active cooling techniques. As a novel part of the battery design, Yardney will investigate and implement high performance electrodes using three dimensional (3D) micro-porous current collectors, safer thin metal case cell design, a micro-channel heat pipe thermal control system to collect heat generated inside the battery and then conduct the heat to the outer shell, thus providing direct cooling for the overheated region. The novel design will also prevent heat propagation between the cells with a lightweight aerogel that has low thermal conductivity. Tests of the enhanced cell design will be compared with Yardney"s existing battery, which meets current full aircraft electrical performance requirements. Yardney will work with the University of Arizona, experts in thermal modeling and heat-generation studies in battery electrodes and the battery cells and investigate the most effective thermal design for the 3D electrodes and the battery pack using high performance computing systems.
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 124.57K | Year: 2014
Lithium-Ion batteries have been a main source of energy for many aerospace applications over the past decade. Future space missions are facing a number of challenging requirements, including significant increase in specific energy, approaching 500 Wh/kg, and energy density of 700 Wh/l at cell level. Compared to state-of-the-art technology today, a reduction in mass and volume are necessary, along with improvements for functioning in harsh space environments and an increase in reliability. Yardney Technical Products, Inc., a world leader in cutting-edge battery technology, in collaboration with Purdue University, proposes developing lithium-sulfur battery technology. This will have a cathode based on a novel, sulfur mesoporous carbon composite. In addition, the proposed Phase I research will include lithium dendrite suppressive electrolyte for a significant improvement in safety.
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 731.79K | Year: 2011
ABSTRACT: The objective of this Phase II proposal is to develop a hybrid Li-ion/ UCAP system for space power use. Long term space missions utilizing battery based electrical power subsystems often undergo thousands of charge/discharge cycles and short high rate discharge cycles over the length of the mission. During Phase II of this program Yardney in collaboration with Maxwell Technologies propose to develop a hybrid system consisting of high energy Li-ion, high power ultracapacitor (UCAP) and the electronic interface control module. The hybrid system to be developed in this program will maximize end of life Li-ion battery performance in space power applications. BENEFIT: Air Force Application: The target application for this Li-ion/UCAP hybrid system is in space power Air Force applications where long life safety, longer cycle life, and long-term stability are required. This new technology will have superior electrochemical performance even at high rate discharge and long term cycle life due to UCAP interface and the electronic control unit module. Non Military Application: Li-ion/UCAP hybrid systems with high power and long life will benefit all DoD, National Reconnaissance Office (NRO) spacecraft applications, military and commercial communication satellite and even Hybrid Electric Vehicles.
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 149.42K | Year: 2014
YTP will develop technology that provides a high performance, modular Li-ion battery with: redundant safety features, safer thin, metal case cell designs; fin/micro-channel thermal control system; and an evaporating fluid system that rapidly quenches failing cells to prevent thermal runaway and fratricide. The end goal of the proposal is making a lighter, longer lasting, less expensive, safer JSF Battery. As a novel part of the battery design, YTP will study and test the implementation of an active cooling system based on the evaporation of a pressurized fluid such as CO2 or R134a. YTP will demonstrate that we can manufacture a smaller and lighter JSF cell which will be verified by testing the enhanced chemistry against YTP"s existing offering for the JSF, which meets the full electrical performance requirements. YTP will work with URI to concentrate to the JSF requirements their extensive work on atomic modeling of electrolytes and SEI layers with improved conductivity and thermal stability. Through modeling and testing, the work will demonstrate that the advanced thermal system will allow for a battery that can both resist failures and tolerate larger failures without going into thermal runaway.
Agency: Department of Defense | Branch: Missile Defense Agency | Program: SBIR | Phase: Phase I | Award Amount: 99.71K | Year: 2012
The objective of this proposal is to develop a high-energy and high-power hybrid system consisting of a lithium ion (Li-ion) battery in conjunction with an ultracapacitor (UCAP) for advanced power storage systems for interceptors. Yardney Technical Products (YTP), the world leader in cutting-edge Li-ion battery technology proposes to design, develop and test new improved materials for several cell components to provide higher energy density, better low temperature (below -20 & #61616;C) performance, higher DoD in life cycling without significant loss of cycle life. The program first optimizes then characterizes the energy density of Li-ion. (>275Wh/kg). These results are then used to design the capacitor system. The proposed space-quality high energy and high power density hybrid system can accommodate long duration missions for Ballistic Missile Defense System (BMDS) applications.
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase II | Award Amount: 427.68K | Year: 2015
Yardney is proposing to take the technology we have previously developed in Phase 1 and move toward thinner cell designs to meet the extreme temperature and power requirements of the next generation of high power Naval Aircraft. Just as the optimum Hybrid Electric Vehicle batteries were a step towards more power and thus thinner design, the optimum battery for high power, high energy Naval aviation applications is a step further while still using existing chemistries and assembly methods. Above and beyond the thermal advantages, the ability to rapidly dissipate heat will allow the battery to tolerate internal faults that cause other physical designs to reach temperatures that lead to catastrophic thermal runaway. The cells will be packaged into low voltage (