Nitrogen-doped graphene nanosheets as cathode materials with excellent electrocatalytic activity for high capacity lithium-oxygen batteries

article i nfo Nonaqueous lithium-oxygen battery with nitrogen-doped graphene nanosheets (N-GNSs) as cathode materials delivered a discharge capacity of 11660 mAh g �1 , which is about 40% higher than that with the pristine gra- phene nanosheets (GNSs). The electrocatalytic activity of N-GNSs for oxygen reduction in the nonaqueous elec- trolyte is 2.5 times as that of GNSs. The excellent electrochemical performance of N-GNSs is attributed to the defects and functional groups as active sites introduced by nitrogen doping.

[1]  Hubert A. Gasteiger,et al.  Method Development to Evaluate the Oxygen Reduction Activity of High-Surface-Area Catalysts for Li-Air Batteries , 2011 .

[2]  Ji-Guang Zhang,et al.  Air electrode design for sustained high power operation of Li/air batteries , 2009 .

[3]  R. Li,et al.  Superior cycle stability of nitrogen-doped graphene nanosheets as anodes for lithium ion batteries , 2011 .

[4]  K. M. Abraham,et al.  A Polymer Electrolyte‐Based Rechargeable Lithium/Oxygen Battery , 1996 .

[5]  Y. Ishikawa,et al.  In Search of the Active Site in Nitrogen-Doped Carbon Nanotube Electrodes for the Oxygen Reduction Reaction , 2010 .

[6]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[7]  A. Vijh,et al.  Non-noble metal-carbonized aerogel composites as electrocatalysts for the oxygen reduction reaction , 2003 .

[8]  Hubert A. Gasteiger,et al.  Catalytic activity trends of oxygen reduction reaction for nonaqueous Li-air batteries. , 2011, Journal of the American Chemical Society.

[9]  E. Yeager.  Dioxygen electrocatalysis: mechanisms in relation to catalyst structure , 1986 .

[10]  Deyang Qu,et al.  Investigation of the Gas-Diffusion-Electrode Used as Lithium/Air Cathode in Non-aqueous Electrolyte and the Importance of Carbon Material Porosity , 2010 .

[11]  B. McCloskey,et al.  Lithium−Air Battery: Promise and Challenges , 2010 .

[12]  Miss A.O. Penney.  (b) , 1974, The New Yale Book of Quotations.

[13]  Betar M. Gallant,et al.  All-carbon-nanofiber electrodes for high-energy rechargeable Li–O2 batteries , 2011 .

[14]  Xueliang Sun,et al.  Nitrogen-doped carbon nanotubes as cathode for lithium–air batteries , 2011 .

[15]  Y. Liu,et al.  Nitrogen-doped graphene as efficient metal-free electrocatalyst for oxygen reduction in fuel cells. , 2010, ACS nano.

[16]  H. Gasteiger,et al.  Electrocatalytic Activity Studies of Select Metal Surfaces and Implications in Li-Air Batteries , 2010 .

[17]  Xueliang Sun,et al.  Nitrogen doping effects on the structure of graphene , 2011 .

[18]  Yi Cui,et al.  Toward N-Doped Graphene via Solvothermal Synthesis , 2011 .

[19]  Yuyan Shao,et al.  Nitrogen-doped graphene and its application in electrochemical biosensing. , 2010, ACS nano.

[20]  Haoshen Zhou,et al.  Li-air rechargeable battery based on metal-free graphene nanosheet catalysts. , 2011, ACS nano.

[21]  Duncan Graham,et al.  Oxygen reactions in a non-aqueous Li+ electrolyte. , 2011, Angewandte Chemie.

[22]  L. Dai,et al.  Polyelectrolyte functionalized carbon nanotubes as efficient metal-free electrocatalysts for oxygen reduction. , 2011, Journal of the American Chemical Society.

[23]  B. Kumar,et al.  Electrochemical performance of highly mesoporous nitrogen doped carbon cathode in lithium-oxygen batteries , 2011 .

[24]  R. Li,et al.  Superior energy capacity of graphene nanosheets for a nonaqueous lithium-oxygen battery. , 2011, Chemical communications.

[25]  W. Bennett,et al.  Hierarchically porous graphene as a lithium-air battery electrode. , 2011, Nano letters.

[26]  장윤희,et al.  Y. , 2003, Industrial and Labor Relations Terms.