SMP Dc-Dc boost converter

our thesis group is making a dc-dc boost converter using li-ion battery,
what li-ion battery (brand/type) can you suggest that can store more energy...,
and please, if possible, attach a link to that battery's details

Thanks ^^!

More energy is a good requirement, but for a better spec, how about best energy/ $ initial cost or best energy storage/ lifetime cost or best energy for weight or volume or efficiency of recharging total cycles or recharging time. All these requirements have a cost, so the best project is one that has a firm grasp on all the issues and tradeoffs with ranking for priorities until you know exactly is available and what is possible. So try to expand on the project specs for realistic requirements with ranking on choices when it comes to making tradeoffs. Make as a big or small a list of variables and try to rank them for certain requirements. Consumer, Industrial, and Military requirements are rarely the same environment.

wha you do with this dc-dc converter? what are parameters(Uin, Uout,I out), or a schematic maybe?

thank you for all your replys!
the goal of our SMP is to produce a sort of power source for selected devices or equipment during power outage or in outdoor activities.
So, for our specs: we decided to have an output of 3.6V, 5V, 12V...with usb port, we have not yet decided if we should include inverter,
"best energy storage/ initial cost", portable & convenient, high efficiency, and less recharging time. our other consideration is to include a charger within the SMP
to eliminate the method of recharging the li-ion to a separate charger or laptop perhaps.
currently, we our still studying the fundamentals, so i'm sorry we can't show a schematic yet...

And the maximum output power is?

Universal Laptop chargers at consumer prices here in Canada for qty 1 are about $35 +tax for a universal SMPS 85W. Many are switchable voltage for different series cell sizes & USB port, some are fixed at 19V @4.5A and 19.5V @ 2A. But the consumer cost is $0.41/W. Production BOM cost will be < $0.10/W.

So when it comes to cheapest initial cost, I would say "buy" is cheaper than "make". A reverse engineering study or cost vs performance analysis may be more revealing than attempt to compete without experience in this market. Or choose another niche market where there is more need a standard LED light engine DC power source, for low cost consumer market and more reliable commercial market with centralized battery backup. Research the contenders for a Zhaga standard on the electrical light engines. Find out what each supplier uses for DC power source and where they are going. Research the tradeoffs for efficiency and cost and flexibility for say 100W, 300W, 1KW for bulk LED distributed DC power with dim control for self- regulation and user power level control. Cost of distribution, material , installation needs careful design and the arrays of LEDs have a wide range where 24,48V and higher voltages being preferred to reduce distribution losses. Once can consider many scenarios such as new build, retrofit, pro install, self-install, PFC correction options and cost range, EMC methods and cost options, issues and cost range.

( There is no present Zhaga electrical standard, just mechanical standard for interfacing. )

This requires more research into marketting and engineering strategies, research into distributed DC fault isolation and protection and rather a simple theoretical SMPS for laptop that is already very inexpensive yet more complicated to convey in this forum.

AC designs also need to meet all the UL FCC/CE safety and EMC requirements for egress and ingress would be challenging for students to learn but not that novel for an experience AC-DC designer.

Low Voltage DC does not have the same safety requirements.

Just food for thought.