Introduction of case studies

Resources/Energy

Rechargeable battery

Next-generation lithium battery

We are working on the development of high capacity battery materials in order to dramatically improve the cruising range of electric vehicles.

In order to solve the limitation of occluded Li amount in existing materials, through electronic state control and nano interface control, we are creating new cathode material that are stable even if they contain more lithium ions.

In addition, by working on the development of electrolyte which is compatible with high ion conductivity and safety by molecular design and synthesis technology of organic material.

Development guidelines for next generation Li ion battery materials

All-solid-state battery

For further safety, we are working on the development of all-solid-state batteries using solid electrolytes.

In order to realize an all -solid -state battery, it is necessary to develop a solid electrolyte exhibiting high ionic conductance. By calculation of Ab initio molecular dynamics, visualizing the region where Li ions move and predicting the crystal structure and the Li ion conduction pathway on a model basis, we found a new solid electrolyte material with good conductivity in a short period of time.

In order to realize a high-performance all-solid-state battery, new process technology is also required, and we are developing it simultaneously with the creation of new materials.

Finding high ion conductivity materials by computational science

New principle battery

High energy density / high output batteries are required for mobile, home appliances and wearable devices. Also, to spread renewable energy such as solar cells, low-cost and high-capacity rechargeable batteries are required. Next-generation new-principle batteries for these applications are also being developed utilizing collaboration with external research organizations both in Japan and overseas.

For example, we are working on the realization of Mg batteries that can store electricity at high energy density by using Mg ions that can carry twice the electricity charge of Li ions. At present, we succeeded in realizing high Mg ion conductivity by developing material of magnesium phosphate oxynitride (MgPON).

High ionic conductivity achieved by MgPON[1]

Hydrogen/Energy system

Pure hydrogen fuel cell

We are working on the development of "pure hydrogen fuel cell" which can generate electricity directly from hydrogen, more efficiently and at low cost.

In order to realize a catalyst layer that achieves both low Pt amount and high power generation efficiency, we are developing the ideal catalyst layer structure and the process technology to realize it by unique multiscale simulation that combines the physical phenomena from the micro scale to macro scale of the catalyst layer.

Prediction of power generation performance by simulation

Electrochemical hydrogen compression

For the future carbon-free society, technology to store hydrogen at high density and high efficiency is expected.
We are developing an electrochemical hydrogen compressor to further evolve materials, devices, and systemization technology accumulated in the development of ENE-FARM and pure hydrogen fuel cells, compress the hydrogen highly efficiently, and store it at high density.

Electrochemical reaction / thermal fluid coupling simulation
(gas composition, temperature, humidity, etc.)

Photovoltaic

Perovskite solar cell

The perovskite solar cell has dramatically improved conversion efficiency as same as silicon systems, in less than ten years from invention, and it is attracting attention as the next-generation’s solar cell. Panasonic realizes a clean society by reducing the power generation cost of solar cells to the same level as thermal power generation.

<Recent research result>

  • A conversion efficiency of 21.6% was achieved with alkali metal doping technology for perovskite power generation layer.
  • The durability being considered as a problem, the efficiency maintenance for 500 hours was realized in the environment of 85 ° C. It corresponds to 2 - 3 years under normal use environment.
Ultra light weight, low cost perovskite solar cell