Linh T. Le & Louis TingMentor: Don Green

Technology Entrepreneurship

Prof Chuck Eesley, Stanford University

Introduction Prototype Description

Differentiators Apply Feedbacks on Working

Prototype

Supercapacitor Advantages Higher specific power (~100x

batteries) Rapid charge/discharge times Millions of charge/discharge

cycles State of charge indication Efficiencies (98%) Stable performance Perform well at extreme

temperatures

BatteryX Sketch

Simon et al., Nature Materials,

2008

1) Increase Performanc

e

2) Reduce Cost

Graphene Discovery

First Roll to Roll

Graphene Novel Properties• Electrically conductive• Optically transparent• Mechanically strong & conformal• High surface area• Chemically & electrochemically

inert

Diverse Production Methods• $50/kg anticipated in 3 years for

graphite-derived Inkjet-Printed Graphene

Micropatterns• Electrodes for cheap, flexible

energy storage & generation devices

3D Assembly with Inkjet-Printed 2D Graphene Nanosheets

Micropatterns Inkjet-Printed Graphene

[1] Stoller, 2008; [2] Vivekchand, 2008; [3] Wang, 2009

Ti Foil Current

Collector Teflon Block