Novel Battery Nanoscale Flow Concurrent Laboratory

Innovative Energy Research Center

Novel Battery Nanoscale Flow Concurrent Laboratory

Concurrent Professor
Takashi
Tokumasu

Development of clean energy sources, such as solar cell, Lithium ion battery and fuel cell, is increasingly accelerated all over the world because of recent problems of global-warming and nuclear power plant. It is indispensable to comprehend and control the flow of reactants or products in these batteries to improve the efficiency and decrease the cost. However, it is impossible to comprehend the flow dynamics of these substances accurately by conventional experiments or simulations because the flow field in these batteries consists of aggregations of very fine structure which is of the order of nanometer. Our laboratory analyzes the “flow”, or transport phenomenon of reactants or products in the batteries by large scale quantum calculation or classical molecular dynamics method using a supercomputer. Moreover, we aim to make a theoretical design of a next-generation battery which is high efficiency and low cost by comprehending the characteristics and governing factors of the transport phenomenon from the simulation results.

Quantum/molecular dynamics studies of transport phenomena of substances in polymer electrolyte fuel cell.

Parts of polymer electrolyte fuel cell, such as micro porous layer, catalyst layer and polymer electrolyte membrane, consist of very fine structures which are of the order of nanometer. Therefore it is impossible to analyze the flow characteristics of substances which transport through them accurately by conventional simulations based on continuum theory. In this study we analyze the transport phenomena of the substances in polymer electrolyte fuel cell by large scale quantum calculations or classical molecular dynamics simulations using a supercomputer and make a theoretical design of next-generation fuel cell systems from the simulation results.

Studies of degradation of fuel cell and its effect on the characteristics of fuel cell.

Fuel cells are degraded by long time usage due to various factors and their transport characteristics or mechanical characteristics are greatly changed. In this study, focusing on the degradation of polymer electrolyte membrane, we specify the most vulnerable bond and analyze the effect of impurities on transport characteristics by molecular simulations. Moreover, we make a theoretical design of a polymer electrolyte membrane which is hard to degrade.

Quantum Nanoscale Flow Systems Laboratory