[simple-rss feed=”http://bmr.lbl.gov/feed/?cat=10″ limit=10].
BMR Diagnostics
[simple-rss feed=”http://bmr.lbl.gov/feed/?cat=7″ limit=4].
Vehicular Batteries
Batteries for Advanced Transportation Technologies
The Batteries for Advanced Transportation Technologies (BATT) Program is the premier fundamental research program in the U.S. for developing high-performance, rechargeable batteries for electric vehicles (EVs) and hybrid-electric vehicles (HEVs). While this program includes researchers from all over the US, a large portion of the work is carried out at LBNL in the BESTAR Groups.
BATT is supported by the U.S. Department of Energy Office of Vehicle Technologies (OVT) and is managed by the Lawrence Berkeley National Laboratory (LBNL) as part of its Carbon Cycle 2.0initiative. More information on this program can be found at the BATT Website.
Flow Batteries
To ensure that renewable energy succeeds in delivering reliable power to US consumers, the nation needs cost effective and reliable storage at the grid scale. Conventional rechargeable batteries offer a simple and efficient way to store electricity, but development to date has largely focused on transportation systems and smaller systems for portable power or intermittent backup power; metrics relating to size and volume are far less critical for grid storage than in portable or transportation applications. It therefore stands to reason that optimizing battery performance over a different set of variables might result in an implementation that delivers superior performance for reduced cost. Batteries for large-scale grid storage require durability for large numbers of charge/discharge cycles as well as calendar life, high round-trip efficiency, an ability to respond rapidly to changes in load or input, and reasonable capital costs. Redox flow batteries (RFBs) or redox flow cells (RFCs) promise to meet many of these requirements.
As shown in the figure, a key component of RFBs is the ability to separate power and energy. The power is controlled by the stack while the energy is stored within the separated reactants. Thus, one can optimize over a greater range of variables and storage can be increased with relatively ease and minimal cost compared to the stack, which is typically the most expensive system component.
At Berkeley Lab, we are working on various types of flow cells to understand their operation and durability in order to optimize operating conditions and cell components. Thus, the effort focuses on catalyst materials, membrane separators, flowfield bipolar plates, electrolyte composition, and cell assembly. Of particular interest over the last few years, we have focused on the H2/Br2 couple due to its high performance and power density that will allow for less expensive stacks. The power density achieved is almost an order of magnitude greater than traditional RFBs and the performance is very reversible.
Energy Analysis of Stationary Fuels Cells
The goal of the energy analysis effort is focused on stationary fuel cells including small to large applications and low- to high-temperature applications. This work involves total cost of ownership (TCO) including life-cycle analysis (LCA) and design-for-manufacturing analysis (DFMA). This effort is joint with UC Berkeley with advisement from Strategic Analysis and Ballard Power Systems.
The goals of the activity are as outlined below with a final deliverable of an integrated model (as shown in the flow chart) and subsequent analysis of the use of that model.
For more information contact Tom McKone or Max Wei
- « Previous Page
- 1
- 2
- 3
- 4
- 5
- 6
- …
- 30
- Next Page »