{"260251":{"#nid":"260251","#data":{"type":"news","title":"Can carbon nanomaterials improve energy storage and help save the planet?","body":[{"value":"\u003Cp\u003EEnergy storage comes into play for many products: portable electronics, electric vehicles, power tools, military applications, spacecraft and satellites, as well as renewable energy. One way to provide improved storage capacity in energy storage devices is through the use of carbon nanomaterials, according to Dr. Billyde Brown, who spoke at a Nov. 4 Georgia Tech Manufacturing Institute Brown Bag Seminar.\u003C\/p\u003E\u003Cp\u003EDr. Brown recently joined GTMI as a Research Associate with a focus on manufacturing deployment for nanotechnology. \u0026nbsp;Carbon nanomaterials, he noted, are used in energy storage devices to improve energy storage capacity, provide faster recharge, minimize self-charge, provide lighter weight components and offer longer cycle life. In fact, Dr. Brown noted, research in carbon nanomaterials for energy storage is being driven by the environmental benefits offered by electric vehicles. \u201cAccording to the U.S. Department of Energy, vehicle electrification reduces our dependency on foreign oil by more than 60 percent and greenhouse gases by 40 percent,\u201d he said.\u003C\/p\u003E\u003Cp\u003EOne focus of current research is the use of supercapacitors in electric vehicle powertrains. Supercapacitors bridge the gap between conventional capacitors and rechargeable batteries. \u201cWe are always trying to match the energy and power density of the internal combustion engine,\u201d said Dr. Brown. \u201cBy developing hybrid storage systems consisting of supercapacitors and lithium batteries, we can help bridge that gap.\u201d\u003C\/p\u003E\u003Cp\u003E\u201cBatteries have electro-chemical reactions where charge is transferred across the electrode\/electrolyte interface but, in supercapacitors, there is no chemical reaction, charge is simply accumulated at the interface,\u201d Dr. Brown continued. \u201cBatteries have problems with the decomposition of electrolyte and electrode corrosion, so the cycle life of a battery is much less than supercapacitors.\u201d\u003C\/p\u003E\u003Cp\u003EThe current electrode material for supercapacitors, Dr. Brown explained, is activated carbons, but research in new materials for supercapacitors is focused on advanced carbon nanomaterials (ACN). ACNs are not currently on the market because they have a much higher cost than activated carbons. But they offer many advantages over the current materials in that they provide an ultra-low resistivity, lower pore resistance, lower contact resistance, higher specific capacitance, and enhanced chemical stability.\u0026nbsp; That is why there is a \u201ctrend toward using nanostructured carbons such as carbon nanotubes and graphenes in supercapacitors; and these same materials as supports for new sulfur and silicon electrodes in lithium batteries,\u201d Dr. Brown said. \u201cThese materials can ultimately improve driving range, fuel economy, cost, performance, and reliability of electric vehicles.\u201d\u003C\/p\u003E\u003Cp\u003EBut moving these materials into mainstream manufacturing processes will take some time. \u201cTens of billions of dollars have been invested in nanomaterials because they offer great promise,\u201d said Dr. Brown. \u201cBut they have shown little return. Scalability and manufacturing methods for easy incorporation into products are the two major stumbling blocks.\u201d\u003C\/p\u003E\u003Cp\u003EDr. Brown\u2019s presentation was part of the GTMI Brown Bag Seminar Series, which takes place each Monday between noon and 1 p.m. in the Manufacturing Research Building, Room 114. Students and faculty are invited and are welcome to bring their lunch to the meeting. If you have questions or you want to be added to the reminder list for these events, please contact Tina Guldberg at \u003Ca href=\u0022mailto:tina.guldberg@gatech.edu\u0022\u003Etina.guldberg@gatech.edu\u003C\/a\u003E.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EGeorgia Tech Manufacturing Institute\u0027s Dr. Billyde Brown explains how nanocarbon materials are being used to advance energy storage at his recent Brown Bag Seminar.\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Georgia Tech Manufacturing Institute\u0027s Dr. Billyde Brown explains how nanocarbon materials are being used to advance energy storage at his recent Brown Bag Seminar."}],"uid":"27857","created_gmt":"2013-12-11 11:33:50","changed_gmt":"2016-10-08 03:15:33","author":"Tracy Heath","boilerplate_text":"","field_publication":"","field_article_url":"","dateline":{"date":"2013-12-11T00:00:00-05:00","iso_date":"2013-12-11T00:00:00-05:00","tz":"America\/New_York"},"extras":[],"groups":[{"id":"155831","name":"Georgia Tech Manufacturing Institute (GTMI)"}],"categories":[{"id":"42941","name":"Art Research"}],"keywords":[{"id":"81911","name":"Billyde Brown"},{"id":"4096","name":"brown bag"},{"id":"44511","name":"energy storage"},{"id":"215","name":"manufacturing"},{"id":"81921","name":"nanocarbon material"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003ETracy Heath\u003C\/p\u003E\u003Cp\u003E404-894-5562\u003C\/p\u003E\u003Cp\u003E\u003Ca href=\u0022mailto:tracy.heath@gatech.edu\u0022\u003Etracy.heath@gatech.edu\u003C\/a\u003E\u003C\/p\u003E","format":"limited_html"}],"email":["tracy.heath@gatech.edu"],"slides":[],"orientation":[],"userdata":""}}}