Air-stable, high-performance, flexible microsupercapacitor with patterned ionogel electrolyte.

We describe the fabrication of air-stable, high-performance, planar microsupercapacitors (MSCs) on a flexible poly(ethylene terephthalate) substrate with patterned ionogel electrolyte, i.e., poly(ethylene glycol) diacrylate/1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, and electrodes of spray-coated multiwalled carbon nanotubes. The flexible MSC showed good cyclability, retaining ∼80% of initial capacitance after 30 000 cycles, and good mechanical stability down to a bending diameter of 3 mm under compressive stress; 95% of the initial capacitance was retained after 1000 bending cycles. The MSC had high electrochemical stability with retaining 90% of its initial capacitance for 8 weeks in air. Furthermore, vertical stacking of MSCs with patterned solid film of ionogel electrolyte could increase the areal capacitance dramatically. This flexible MSC has potential applications as an energy-storage device in micro/nanoelectronics, without encapsulation for air stability.

[1]  B. Conway.  Transition from “Supercapacitor” to “Battery” Behavior in Electrochemical Energy Storage , 1991 .

[2]  V. Yadavalli,et al.  Fabrication of poly(ethylene glycol) hydrogel microstructures using photolithography. , 2001, Langmuir : the ACS journal of surfaces and colloids.

[3]  Jun Zhang,et al.  Fabrication of High Aspect Ratio Poly(ethylene glycol)-Containing Microstructures by UV Embossing , 2003 .

[4]  B. Cho,et al.  Electrochemical performances of electric double layer capacitor with UV-cured gel polymer electrolyte based on poly[(ethylene glycol)diacrylate]–poly(vinylidene fluoride) blend , 2005 .

[5]  Jiyoul Lee,et al.  Ion gel gated polymer thin-film transistors. , 2007, Journal of the American Chemical Society.

[6]  Jiyoul Lee,et al.  Printable ion-gel gate dielectrics for low-voltage polymer thin-film transistors on plastic. , 2008, Nature materials.

[7]  T. Lodge,et al.  High‐Capacitance Ion Gel Gate Dielectrics with Faster Polarization Response Times for Organic Thin Film Transistors , 2008 .

[8]  Timothy P. Lodge,et al.  Ion Gel-Gated Polymer Thin-Film Transistors: Operating Mechanism and Characterization of Gate Dielectric Capacitance, Switching Speed, and Stability , 2009 .

[9]  Jean-Louis Viovy,et al.  Soft microflow sensors. , 2009, Lab on a chip.

[10]  Bruno Scrosati,et al.  Ionic-liquid materials for the electrochemical challenges of the future. , 2009, Nature materials.

[11]  Peihua Huang,et al.  Ultrahigh-power micrometre-sized supercapacitors based on onion-like carbon. , 2010, Nature nanotechnology.

[12]  Junmin Zhu,et al.  Bioactive modification of poly(ethylene glycol) hydrogels for tissue engineering. , 2010, Biomaterials.

[13]  Heather N. Hayenga,et al.  PEGDA hydrogels with patterned elasticity: Novel tools for the study of cell response to substrate rigidity , 2010, Biotechnology and bioengineering.

[14]  Yonggang Huang,et al.  Waterproof AlInGaP optoelectronics on stretchable substrates with applications in biomedicine and robotics. , 2010, Nature materials.

[15]  Y. Kumar,et al.  Performance Studies of Activated Charcoal Based Electrical Double Layer Capacitors with Ionic Liquid Gel Polymer Electrolytes , 2010 .

[16]  Justin A. Blanco,et al.  Dissolvable films of silk fibroin for ultrathin conformal bio-integrated electronics. , 2010, Nature materials.

[17]  Unyong Jeong,et al.  Periodic array of polyelectrolyte-gated organic transistors from electrospun poly(3-hexylthiophene) nanofibers. , 2010, Nano letters.

[18]  J. Myoung,et al.  Random network transistor arrays of embedded ZnO nanorods in ion-gel gate dielectric , 2010 .

[19]  John A Rogers,et al.  SnO2 nanowire logic devices on deformable nonplanar substrates. , 2011, ACS nano.

[20]  Ionogels, Ionic Liquid Based Hybrid Materials , 2011 .

[21]  M. El‐Kady,et al.  Scalable fabrication of high-power graphene micro-supercapacitors for flexible and on-chip energy storage , 2013, Nature Communications.

[22]  Klaus Müllen,et al.  Graphene-based in-plane micro-supercapacitors with high power and energy densities , 2013, Nature Communications.

[23]  S. Hashmi,et al.  Ionic liquid 1-ethyl-3-methylimidazolium tetracyanoborate-based gel polymer electrolyte for electrochemical capacitors , 2013 .

[24]  Seok Hyun Yun,et al.  Light-guiding hydrogels for cell-based sensing and optogenetic synthesis in vivo , 2013, Nature Photonics.

[25]  Gunchul Shin,et al.  Fabrication of a stretchable solid-state micro-supercapacitor array. , 2013, ACS nano.

[26]  Jonathan A. Fan,et al.  Stretchable batteries with self-similar serpentine interconnects and integrated wireless recharging systems , 2013, Nature Communications.

[27]  S. Ramesh,et al.  A novel approach on ionic liquid-based poly(vinyl alcohol) proton conductive polymer electrolytes for fuel cell applications , 2014 .

[28]  R. Kodzius,et al.  Characterization of solid UV cross-linked PEGDA for biological applications , 2013, 2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS).

[29]  G. Wallace,et al.  High strain stretchable solid electrolytes , 2013 .

[30]  Sanat S Bhole,et al.  Soft Microfluidic Assemblies of Sensors, Circuits, and Radios for the Skin , 2014, Science.

[31]  Hyung-Jun Koo,et al.  Selective Wetting‐Induced Micro‐Electrode Patterning for Flexible Micro‐Supercapacitors , 2014, Advanced materials.

[32]  S. M. Humayun Kabir,et al.  Photo-patternable ion gel-gated graphene transistors and inverters on plastic , 2014, Nanotechnology.

[33]  Dimos Poulikakos,et al.  Highly flexible, all solid-state micro-supercapacitors from vertically aligned carbon nanotubes , 2014, Nanotechnology.

[34]  Goangseup Zi,et al.  High-density, stretchable, all-solid-state microsupercapacitor arrays. , 2014, ACS nano.

[35]  조길원,et al.  Transparent, Low-power Pressure Sensor Matrix based on Coplanar-gate Graphene Transistors , 2014 .