Product design - Major project / Battery research

Good evening everyone!

This post will provide information about the suitable battery for my self-heated lunch box. My ideal battery is last long and quick at heated the food up.
From my research, I have found new technology of lithium-ion battery which is powerful in generating the heat energy. It can release energy within a short period of time and hence, saving customer and making life easier. It allows wireless device to generate heat at a greater speed. Currently, this battery is not available in the market and It would be an excellent idea to adopt this technology in a part of my project.

www.extremetech.com

These huge advances stem from a brand new cathode and anode structure, pioneered by the University of Illinois researchers. In essence, a standard li-ion battery normally has a solid, two-dimensional anode made of graphite and a cathode made of a lithium salt. The new Illinois battery, on the other hand, has a porous, three-dimensional anode and cathode. To create this new electrode structure, the researchers build up a structure of polystyrene (Styrofoam) on a glass substrate, electrodeposit nickel onto the polystyrene, and then electrodeposit nickel-tin onto the anode and manganese dioxide onto the cathode. 

I need to build into lunch box water proof battery. I researched water proof technology which is used by companies such as Samsung or iPhone. 

www.trustedreviews.com

Samsung devices's backed by an international standard rating of IP68 are deemed fit enough to withstand dust, dirt and sand, and are resistant to submersion up to a maximum depth of 1.5m.

www.samsung.com/global/galaxy/galaxy-s8/performance/

This technology allows to keep the device under water for up to 30 mins, enough to wash lunch box. 

My product is not suitable for washing in a dishwasher. 

www.trustedreviews.com

P67 means the unit can be dropped into a body of water up to a meter deep for half an hour, while IP68 guarantees protection in water up to 1.5m deep for the same period of time. Both are resistant to dust.

I decided to choice this technology of battery, because It is the best technology to build into my lunch box. P67 technology is water resistant which allows to keep the battery intact during cleaning after use lunch box.