Layered　H2Ti6O13-nanowires　are　prepared　using　a　facile　hydrothermal　method　and　their　Lia　storage　behavior　is　investigated　in　nona　aqueous　electrolyte.　The　achieved　results　demonstrate　the　pseudocapacitive　characteristic　of　Lia　storage　in　the　layered　H　2Ti6O13-nanowires,　which　is　because　of　the　typical　nanosize　and　expanded　interlayer　space.　The　asa　prepared　H　2Ti6O13-nanowires　have　a　high　capacitance　of　828　F　g-1　within　the　potential　window　from　2.0　to　1.0　V　(vs.　Li/Li+).　An　asymmetric　supercapacitor　with　high　energy　density　is　developed　successfully　using　H2Ti6O13-nanowires　as　a　negative　electrode　and　ordered　mesoporous　carbon　(CMKa　3)　as　a　positive　electrode　in　organic　electrolyte.　The　asymmetric　supercapacitor　can　be　cycled　reversibly　in　the　voltage　range　of　1　to　3.5　V　and　exhibits　maximum　energy　density　of　90　Wh　kg-1,　which　is　calculated　based　on　the　mass　of　electrode　active　materials.　This　achieved　energy　density　is　much　higher　than　previous　reports.　Additionally,　H2Ti6O13//CMK-3　asymmetric　supercapacitor　displays　the　highest　average　power　density　of　11　000　W　kg-1.　These　results　indicate　that　the　H2Ti　6O13//CMKa　3　asymmetric　supercapacitor　should　be　a　promising　device　for　fast　energy　storage.　Copyright　©　2012　WILEY-VCH　Verlag　GmbH　&　Co.　KGaA,　Weinheim.