{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T06:26:56Z","timestamp":1791268016812,"version":"4.1.0"},"reference-count":0,"publisher":"The Electrochemical Society","issue":"2","license":[{"start":{"date-parts":[[2000,2,1]],"date-time":"2000-02-01T00:00:00Z","timestamp":949363200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/page\/copyright"},{"start":{"date-parts":[[2000,2,1]],"date-time":"2000-02-01T00:00:00Z","timestamp":949363200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["J. Electrochem. Soc."],"published-print":{"date-parts":[[2000,2,1]]},"abstract":"<jats:p>A poly(1,5\u2010diaminoanthraquinone) [poly(DAAQ)], which is a conducting polymer condensed with 1,4\u2010benzoquinone, was studied electrochemically and was proposed as a new category of electrochemical capacitor material. In common nonaqueous media, the poly(DAAQ) showed two sets of reproducible redox couples for repeated cycles. The potential window of the material was in the range from <jats:italic>ca.<\/jats:italic> \u22121.5 to +1.0 V (vs. Ag\/AgCl). <jats:italic>In situ<\/jats:italic> UV\u2010visible spectroscopy suggested that the redox couple observed around \u22121.5 V is responsible for the quinone group and that around +1.0 V is due to the \u03c0\u2010conjugated system. The poly(DAAQ) showed high conductivity <jats:inline-formula>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\" id=\"ML1\" overflow=\"scroll\">\n                        <mml:mo stretchy=\"false\">(<\/mml:mo>\n                        <mml:mn>0.3<\/mml:mn>\n                        <mml:mo>\u2013<\/mml:mo>\n                        <mml:mn>2.0<\/mml:mn>\n                        <mml:mo>\u2009<\/mml:mo>\n                        <mml:msup>\n                           <mml:mi mathvariant=\"normal\">\u03a9<\/mml:mi>\n                           <mml:mrow>\n                              <mml:mo>\u2212<\/mml:mo>\n                              <mml:mn>1<\/mml:mn>\n                           <\/mml:mrow>\n                        <\/mml:msup>\n                        <mml:mo>\u2009<\/mml:mo>\n                        <mml:msup>\n                           <mml:mi mathvariant=\"normal\">cm<\/mml:mi>\n                           <mml:mrow>\n                              <mml:mo>\u2212<\/mml:mo>\n                              <mml:mn>1<\/mml:mn>\n                           <\/mml:mrow>\n                        <\/mml:msup>\n                        <mml:mo stretchy=\"false\">)<\/mml:mo>\n                     <\/mml:math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"jes_147_2_420ieqn1.jpg\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula> over a wide range of potential (\u22122.0 to 0.8 V), which suggests extension of the \u03c0\u2010conjugated system. It is proposed here that one can construct an electrochemical capacitor device by utilizing poly(DAAQ) as both positive and negative electrodes. We constructed the poly(DAAQ)\/poly(DAAQ) electrochemical capacitor for test purposes. The poly(DAAQ)\/poly(DAAQ) electrochemical capacitor exhibited high specific energy <jats:inline-formula>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\" id=\"ML2\" overflow=\"scroll\">\n                        <mml:mo stretchy=\"false\">(<\/mml:mo>\n                        <mml:mn>25<\/mml:mn>\n                        <mml:mo>\u2013<\/mml:mo>\n                        <mml:mn>46<\/mml:mn>\n                        <mml:mo>\u2009<\/mml:mo>\n                        <mml:msup>\n                           <mml:mi mathvariant=\"normal\">Wh\u2009kg<\/mml:mi>\n                           <mml:mrow>\n                              <mml:mo>\u2212<\/mml:mo>\n                              <mml:mn>1<\/mml:mn>\n                           <\/mml:mrow>\n                        <\/mml:msup>\n                        <mml:mo stretchy=\"false\">)<\/mml:mo>\n                     <\/mml:math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"jes_147_2_420ieqn2.jpg\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula> and high specific power <jats:inline-formula>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\" id=\"ML3\" overflow=\"scroll\">\n                        <mml:mo stretchy=\"false\">(<\/mml:mo>\n                        <mml:mn>10<\/mml:mn>\n                        <mml:mo>,<\/mml:mo>\n                        <mml:mn>200<\/mml:mn>\n                        <mml:mo>\u2013<\/mml:mo>\n                        <mml:mn>30<\/mml:mn>\n                        <mml:mo>,<\/mml:mo>\n                        <mml:mn>500<\/mml:mn>\n                        <mml:mo>W<\/mml:mo>\n                        <mml:msup>\n                           <mml:mi mathvariant=\"normal\">kg<\/mml:mi>\n                           <mml:mrow>\n                              <mml:mo>\u2212<\/mml:mo>\n                              <mml:mn>1<\/mml:mn>\n                           <\/mml:mrow>\n                        <\/mml:msup>\n                        <mml:mo stretchy=\"false\">)<\/mml:mo>\n                     <\/mml:math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"jes_147_2_420ieqn3.jpg\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula> at discharge rates from 30 to 90 C. \u00a9 2000 The Electrochemical Society. All rights reserved.<\/jats:p>","DOI":"10.1149\/1.1393212","type":"journal-article","created":{"date-parts":[[2002,7,28]],"date-time":"2002-07-28T22:22:20Z","timestamp":1027894940000},"page":"420-426","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":128,"title":["Electrochemistry of Poly(1,5\u2010diaminoanthraquinone) and Its Application in Electrochemical Capacitor Materials"],"prefix":"10.1149","volume":"147","author":[{"given":"Katsuhiko","family":"Naoi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shunzo","family":"Suematsu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ari","family":"Manago","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"77","container-title":["Journal of The Electrochemical Society"],"original-title":[],"link":[{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1.1393212","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1.1393212\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1.1393212\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1149\/1.1393212","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"},{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1.1393212\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,12,13]],"date-time":"2021-12-13T13:43:32Z","timestamp":1639403012000},"score":1,"resource":{"primary":{"URL":"https:\/\/iopscience.iop.org\/article\/10.1149\/1.1393212"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2000,2,1]]},"references-count":0,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2000,2,1]]}},"URL":"https:\/\/doi.org\/10.1149\/1.1393212","relation":{},"ISSN":["0013-4651","1945-7111"],"issn-type":[{"value":"0013-4651","type":"print"},{"value":"1945-7111","type":"electronic"}],"subject":[],"published":{"date-parts":[[2000,2,1]]},"assertion":[{"value":"Electrochemistry of Poly(1,5\u2010diaminoanthraquinone) and Its Application in Electrochemical Capacitor Materials","name":"article_title","label":"Article Title"},{"value":"Journal of The Electrochemical Society","name":"journal_title","label":"Journal Title"},{"value":"paper","name":"article_type","label":"Article Type"},{"value":"\u00a9 2000 ECS - The Electrochemical Society","name":"copyright_information","label":"Copyright Information"},{"value":"1999-09-15","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}