{"doi":"10.1021/nl802558y","title":"Graphene-Based Ultracapacitors","abstract":"The surface area of a single graphene sheet is 2630 m(2)/g, substantially higher than values derived from BET surface area measurements of activated carbons used in current electrochemical double layer capacitors. Our group has pioneered a new carbon material that we call chemically modified graphene (CMG). CMG materials are made from 1-atom thick sheets of carbon, functionalized as needed, and here we demonstrate in an ultracapacitor cell their performance. Specific capacitances of 135 and 99 F/g in aqueous and organic electrolytes, respectively, have been measured. In addition, high electrical conductivity gives these materials consistently good performance over a wide range of voltage scan rates. These encouraging results illustrate the exciting potential for high performance, electrical energy storage devices based on this new class of carbon material.","journal":"Nano Letters","year":2008,"id":8916,"datarank":17.72059829925834,"base_score":9.021839764105513,"endowment":9.021839764105513,"self_citation_contribution":1.3532759646158272,"citation_network_contribution":16.367322334642516,"self_endowment_contribution":1.3532759646158272,"citer_contribution":16.367322334642516,"corpus_percentile":93.5,"corpus_rank":1155,"citation_count":8281,"citer_count":188,"citers_with_citation_signal":188,"citers_with_endowment":188,"datacite_reuse_total":0,"is_dataset":false,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2008-09-13","authors":[{"id":37254,"name":"Sungjin Park","orcid":"0000-0002-1447-4536","position":1,"is_corresponding":false},{"id":76114,"name":"Yanwu Zhu","orcid":"0000-0003-1106-5718","position":2,"is_corresponding":false},{"id":24073,"name":"Jinho An","orcid":null,"position":3,"is_corresponding":false},{"id":24083,"name":"Rodney S. Ruoff","orcid":"0000-0002-6599-6764","position":4,"is_corresponding":false},{"id":76113,"name":"Meryl D. Stoller","orcid":null,"position":0,"is_corresponding":true}],"reference_count":16,"raw_metadata":{"citation_network_status":"fetched"},"created_at":"2026-03-01T18:20:47.508186Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}