{"id":3744,"date":"2019-06-11T10:47:58","date_gmt":"2019-06-11T05:17:58","guid":{"rendered":"http:\/\/iap.iisc.ac.in\/~abha\/?p=3744"},"modified":"2020-07-07T00:48:58","modified_gmt":"2020-07-06T19:18:58","slug":"micro-supercapacitor-devices","status":"publish","type":"post","link":"https:\/\/iap.iisc.ac.in\/~abha\/micro-supercapacitor-devices\/","title":{"rendered":"Micro-supercapacitor Devices"},"content":{"rendered":"\n

Our studies on supercapacitor are mainly focused on large area printing for high energy density with self-powering capability. We have developed spray coating method for printing supercapacitors on any surface with large number of integration. Light sensitive supercapacitors paved way to fabricate self-powered supercapacitors. We exploit dynamics of charge transport to improve efficiency of self-powered supercapacitors. Carbon materials are cheap and abundantly available source to be utilized largely on these applications, hence we focus to modify multidimensional allotropes of carbon. Through our research we have established novel paradigms in this field. We develop energy storage micro-devices that are compatible with the goal to miniaturized any electronic system with embedded micro-energy storage device. We have achieved an efficient system with high energy density at small scale device configuration. We explore to develop compact supercapacitors. We provide facility for both micro fabrication clean room facility and sophisticated measurements. <\/p>\n\n\n\n

\n
\n
\"\"<\/figure><\/div>\n<\/div>\n\n\n\n
\n
\"\"<\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n
\n\n\n\nRead More<\/a><\/span>\n
<\/p>\n\n\n\n
<\/div>\n\n\n\n

Voltage Generation in Optically Sensitive Supercapacitor for Enhanced Performance<\/strong><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Figure: (a) Voltage?time response of the SSC in\nabsence of UV. (b) Self-generated voltage response of the SSC with respect to\nUV radiation. (c) Cyclic self-generated voltage response under periodically UV\noff and on states of the SSC. (d) Self-generated voltage response with respect\nto the UV radiation intensity.<\/p>\n\n\n\n

Reference: ACS Appl. Energy Mater. 2019, 2, 278?286<\/p>\n\n\n\n

https:\/\/doi.org\/10.1021\/acsaem.8b01248<\/a><\/p>\n\n\n\n

\n\n\n\n

Flexible Array of Microsupercapacitor for Additive\nEnergy Storage Performance Over a Large Area<\/strong><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Figure: fabrication steps involved in the MSC,\nand the inset shows the digital photograph of an MSC. Digital photographs of an\nMSC array on the flexible A4 PET sheet. Digital photographs of the LMSC at\ndifferent bent angles (0?70\u00b0) and CV responses of the LMSC. the areal\ncapacitance\/Coulombic efficiency plots of the LMSC with respect to the current\ndensity (0.01?0.10 mA\/cm2<\/sup>) and voltage (0.4?0.8 V).<\/p>\n\n\n\n

Reference: ACS Appl. Mater. Interfaces\n2018, 10, 15864?15872<\/p>\n\n\n\n

https:\/\/doi.org\/10.1021\/acsami.8b02660<\/a><\/p>\n\n\n\n

\n\n\n\n

Layered Assembly of Reduced Graphene Oxide and Vanadium Oxide Heterostructure Supercapacitor Electrodes with Larger Surface Area for Efficient Energy-Storage Performance<\/strong><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Figure: (c) and (d) are the schematic\ndiagrams of CSC and PSC, where the lower schematics represent the charge\nstorage mechanisms under charging condition. Areal capacitance comparison plot\nwith respect to the current density of the CSC and the PSC. PSC at different\ncurrent densities. Comparison for Ragone plots of the CSC and the PSC.<\/p>\n\n\n\n

Reference: ACS Appl. Energy Mater. 2018, 1,\n1567?1574<\/p>\n\n\n\n

https:\/\/doi.org\/10.1021\/acsaem.7b00358<\/a><\/p>\n\n\n\n

\n\n\n\n

Synergistic effect in heterostructure of ZnCo2<\/sub>O4<\/sub> and hydrogenated zinc oxide nanorods for high capacitive response<\/strong><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Figure: The as-grown ZnCo2<\/sub>O4<\/sub> NRs\non NiF. Variation of specific capacitance and Coulombic efficiency with respect\nto current densities (5\u201315 A g?1<\/sup>). (d) A comparison specific\ncapacitance plot with respect to the current density of the ZnCo2<\/sub>O4<\/sub>\/H\n: ZnO NRs electrode with those of the reported ZnCo2<\/sub>O4 <\/sub>nanostructure\nand hybrid nanostructure-based supercapacitor electrodes.<\/p>\n\n\n\n

Reference: Nanoscale,\n2017, 9, 9411\u20139420<\/p>\n\n\n\n

https:\/\/doi.org\/10.1039\/C7NR01644A<\/a><\/p>\n\n\n\n

\n\n\n\n

Photocharge-Enhanced Capacitive Response of a\nSupercapacitor<\/strong><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Figure: NiCo2<\/sub>O4<\/sub>-coated\nZnO NRs. TEM image of NiCo2<\/sub>O4<\/sub>\/ZnO NR. Cyclic\ncharge\u2013discharge analysis of the NiCo2<\/sub>O4<\/sub>\/ZnO NRs\/\/NiCo2<\/sub>O4<\/sub>\/ZnO\nNRs SC at 1.2 mAg-1<\/sup> current density in the absence and presence of\nUV irradiation. e) Capacitance as a function of current density of the NiCo2<\/sub>O4<\/sub>\/ZnO\nNRs\/\/NiCo2<\/sub>O4<\/sub>\/ZnO NRs SC in both the absence and presence\nof UV irradiation.<\/p>\n\n\n\n

Reference: Energy Technol. 2017, 5, 1356 \u2013\n1363<\/p>\n\n\n\n

https:\/\/doi.org\/10.1002\/ente.201600661<\/a><\/p>\n\n\n\n

\n\n\n\n

Internal asymmetric tandem supercapacitor for high working voltage along with superior rate performance<\/strong><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Figure: Schematic illustration of working mechanism\nof the ATSC: under the chemical equilibrium discharged and charged states. 2000\nto 5000 mV\/s, at a constant potential window of 4.5 V. Ragone plot of the ATSC\nat different current densities; inset depicts the Ragone plot at different\npotential windows (1.5?4.5 V).<\/p>\n\n\n\n

Reference: ACS\nEnergy Lett. 2017, 2, 1720?1728<\/p>\n\n\n\n

https:\/\/doi.org\/10.1021\/acsenergylett.7b00379<\/a><\/p>\n\n\n\n

\n\n\n\n

A flexible ternary oxide based solid-state super capacitor with excellent rate capability<\/strong><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Figure: Microstructure of VZnNiCo. CV plots curve at\ndifferent bending angles of the VZnNiCo\/\/VZnNiCo SC at a constant scan rate of\n500 mV s-1<\/sup>. CV measurements of the VZnNiCo\/\/VZnNiCo SC at (a)\nvarious scan rates ranging from 50 to 5000 mV s-1<\/sup> and (b) different\noperating potential windows at a constant scan rate of 500 mV s-1<\/sup>. Plots\nof the specific cell capacitance and electrode capacitance of the\nVZnNiCo\/\/VZnNiCo SC at various current densities.<\/p>\n\n\n\n

Reference: J. Mater. Chem. A, 2016, 4, 17552\u201317559<\/p>\n\n\n\n

https:\/\/doi.org\/10.1039\/C6TA07829J<\/a><\/p>\n\n\n\n

<\/div>\n","protected":false},"excerpt":{"rendered":"

Our studies on supercapacitor are mainly focused on large area printing for high energy density with self-powering capability. We have developed spray coating method for printing supercapacitors on any surface with large number of integration. Light sensitive supercapacitors paved way to fabricate self-powered supercapacitors. We exploit dynamics of charge transport to improve efficiency of self-powered […]<\/p>\n","protected":false},"author":1,"featured_media":3918,"parent":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[39],"tags":[],"class_list":["post-3744","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research"],"acf":[],"_links":{"self":[{"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/posts\/3744","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/comments?post=3744"}],"version-history":[{"count":8,"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/posts\/3744\/revisions"}],"predecessor-version":[{"id":4183,"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/posts\/3744\/revisions\/4183"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/media\/3918"}],"wp:attachment":[{"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/media?parent=3744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/categories?post=3744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iap.iisc.ac.in\/~abha\/wp-json\/wp\/v2\/tags?post=3744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}