Li-metal battery technology has been systematically investigated including electrode, separator, electrolyte, cell design, as well as cell manufacture process. In this talk, we would like to first share our perspectives on the development of lithium-metal batteries. We will then discuss the principle and logic for the cell material selection, cell component integration, as well as the overall cell design with supporting data from both the material and cell-level evaluation.

Fast-charging is a critical enabler for the adoption of electric transportation. Unfortunately, batteries with higher rate capability are often more expensive, having a negative effect on profitable EV business. In this talk, we take a broader look at new Li-ion developments, beyond Li-ion technology, as well as system considerations that offer different approaches and a positive perspective on the future of fast-charging EVs.

Requirements for battery cells to be used in electric vehicles range from the obvious to the subtle. A description of these requirements will be provided and then compared to the developmental status of a spectrum of next-generation lithium-ion and beyond-lithium-ion chemistries.

This presentation will describe BMW’s view of the role that different cell designs and chemistries can play in designing batteries for diverse EV applications. Specifically, the impact of cell design and charging protocol optimization on battery lifetime (calendar and cycle aging) will be discussed. Key challenges will be addressed with examples from BMW research projects.

Battery technologies are typically developed with a specific use-case and business-case in mind. However, taking an integrated approach to requirements definition, concept iteration, and validation may allow for more innovative design and manufacturing solutions. We explore the use of platform technologies in the laboratory, in prototyping, and in data analysis to hasten development cycles.

Secondary batteries development has come a long way, having found applications in small electronic devices in its early stages, to powering the next revolution in automobile industry. While the initial stages of the development were fueled by rigorous and painstakingly long experiments, computational material science has been paving the way in accelerating the recent advances in batteries. In this talk, I will focus the role of computations in Nissan's R&D efforts.

This talk will provide a high-level overview of the BESS product lifecycle, and it will lay out the total value chain from design and development, site engineering and deployment, digitization, remote monitoring, field service, and asset management. It will illustrate how safety and risk management are woven into each of these value-chain components.

Electrochemical Impedance Spectroscopy (EIS) is a frequency-based characterization method with wide applications, including batteries, fuel cells, medicine, material characterization, and corrosion. Despite the promising advantages, adoption of EIS technique in electric vehicles (EVs) comes with challenges. For example, conventional laboratory-based EIS setups are utilized standalone and offline, whereas in EVs, onboard implementation is of interest. Moreover, the battery should be excited at linear mode utilizing a small current, and therefore higher noise levels in EVs complicate EIS measurement. This talk first, reviews the EIS EV applications, and second, showcases the above-mentioned practical challenges based on evidence.

This talk will discuss progress in performance of liquid electrolytes for use with lithium-metal anodes. Rapid capacity fade and electrolyte consumption can occur with liquid electrolyte cells that contain lithium-metal anodes. However, these problems can be mitigated with advanced formulations. The effect of cycling protocol can also be quite dramatic and will be reviewed in this presentation.

State-of-the-art lithium-ion batteries (LIBs) can be fully charged in about 1h with minimal degradation in cell performance. However, full charging over shorter durations causes irreversible damage to the battery via losses in the mobile Li-ion inventory (capacity fade) and resistance increase (power fade). This presentation will describe reasons for this performance loss and illustrate efforts to enhance the charging ability of LIBs through material and electrode modifications.

The number of electric vehicles is growing rapidly, and so are retired batteries. The batteries are costly in production and recycling. Handling retired EV batteries is thus important for both the economy and the environment. DOE and CEC have funded multiple projects to promote second-life EV batteries (SLBs) in storage applications. However, deploying SLBs will encounter serious issues, such as lifetime, cost, safety, liability, and regulations. This talk will discuss the result of a recent CEC-funded project, including the aging mechanism, charge/discharge methods, thermal management, cell/pack balancing, energy management, policy, standards, and fire codes related to energy storage systems using second-life EV batteries.

As an enabling technology for fast charging, the implementation of 2-phase immersion cooling, where the traction battery serves as an evaporator in a refrigeration process. The 2-phase immersion cooling enables very high heat transfer rates of measured 3400 W/m^2*K and, at the same time, maximum temperature homogeneity within the battery pack at optimal battery operating temperature. Thus, heat loads at charging rates of more than 6C can be safely and permanently managed by the battery thermal system. In addition, 2-phase immersion cooling has been shown to be a useful measure in preventing the progression of thermal events