Carbon nanotube substrate electrodes for lightweight, long-life rechargeable batteries

Lighter weight and longer life batteries for electrochemical energy storage are needed for many applications including aerospace, transportation, portable electronics, and biomedical devices. Inclusion of inert materials as part of the battery electrode significantly decreases energy density as they contribute to the weight and volume of the electrode, but not to its energy content. This work demonstrates the viability of using novel metal oxide/carbon nanotube substrate (CNT-S) electrodes in rechargeable cells. To our knowledge this is the first reported use of CNT-S for lithium battery cathodes without the use of a supporting metal current collector. Calculations show that the use of CNT-S can increase the cathode specific capacity by 20–60%, due to the low mass of the CNT-S and elimination of binders and other inert conductive carbons typically added to composite cathodes on foil current collectors. The oxidative stability of CNT-S relative to metal foil current collectors may extend battery lifetimes and enable use of electrolytes that are currently not viable. Two methods of preparing electrodes were demonstrated, the first using material deposited on the CNT substrate after isolation and the second method using direct integration during material synthesis.

[1]  W. D. de Heer,et al.  Carbon Nanotubes--the Route Toward Applications , 2002, Science.

[2]  Jean-Jacques Legendre,et al.  Vanadium pentoxide gels , 1983 .

[3]  Ryne P. Raffaelle,et al.  Carbon nanotubes for lithium ion batteries , 2009 .

[4]  Ning Hu,et al.  Effect of fabrication process on electrical properties of polymer/multi-wall carbon nanotube nanocomposites , 2008 .

[5]  Yu Zuolong,et al.  The effect of different kinds of nano-carbon conductive additives in lithium ion batteries on the resistance and electrochemical behavior of the LiCoO2 composite cathodes , 2008 .

[6]  E. Frąckowiak,et al.  Carbon nanotubes and their composites in electrochemical applications , 2011 .

[7]  Yong Jung Kim,et al.  The reinforcing effect of combined carbon nanotubes and acetylene blacks on the positive electrode of lithium-ion batteries. , 2008, ChemSusChem.

[8]  R. Holze,et al.  Electrode materials for lithium secondary batteries prepared by sol-gel methods , 2005 .

[9]  S. Kirkpatrick.  Percolation and Conduction , 1973 .

[10]  J. Rogers,et al.  Comparison of multiwalled carbon nanotubes and carbon black as percolative paths in aqueous-based natural graphite negative electrodes with high-rate capability for lithium-ion batteries , 2008 .

[11]  Marina Mastragostino,et al.  A three-dimensional carbon-coated LiFePO4 electrode for high-power applications , 2010 .

[12]  Kang Xu,et al.  Nonaqueous liquid electrolytes for lithium-based rechargeable batteries. , 2004, Chemical reviews.

[13]  L. Krause,et al.  Corrosion of aluminum at high voltages in non-aqueous electrolytes containing perfluoroalkylsulfonyl imides; new lithium salts for lithium-ion cells , 1997 .

[14]  B. Lestriez,et al.  A Multiscale Description of the Electronic Transport within the Hierarchical Architecture of a Composite Electrode for Lithium Batteries , 2009 .

[15]  F. Kang,et al.  A comparative investigation on multiwalled carbon nanotubes and carbon black as conducting additive in LiNi0.7Co0.3O2 , 2006 .

[16]  M. Wohlfahrt‐Mehrens,et al.  Study of multi-walled carbon nanotubes for lithium-ion battery electrodes , 2011 .

[17]  M. Kanatzidis,et al.  Structure of V(2)O(5)*nH(2)O xerogel solved by the atomic pair distribution function technique. , 2002, Journal of the American Chemical Society.

[18]  Hao Zhang,et al.  Carbon nanotube arrays and their composites for electrochemical capacitors and lithium-ion batteries , 2009 .

[19]  J. Ding,et al.  Liquid electrolyte based on lithium bis-fluorosulfonyl imide salt: Aluminum corrosion studies and lithium ion battery investigations , 2009 .

[20]  E. Kymakis,et al.  Electrical properties of single-wall carbon nanotube-polymer composite films , 2006 .

[21]  Stefan Pischinger,et al.  Percolation–tunneling modeling for the study of the electric conductivity in LiFePO4 based Li-ion battery cathodes , 2011 .

[22]  Jun Chen,et al.  Compact-designed supercapacitors using free-standing single-walled carbon nanotube films , 2011 .

[23]  Bugga V. Ratnakumar,et al.  Li ion batteries for aerospace applications , 2001 .

[24]  Marshall C. Smart,et al.  Lithium batteries for aerospace applications: 2003 Mars Exploration Rover , 2003 .

[25]  Marshall C. Smart,et al.  Life verification of large capacity Yardney Li‐ion cells and batteries in support of NASA missions , 2010 .

[26]  Ann Marie Sastry,et al.  Selection of Conductive Additives in Li-Ion Battery Cathodes A Numerical Study , 2007 .

[27]  Capucine Sassoye,et al.  “Chimie douce”: A land of opportunities for the designed construction of functional inorganic and hybrid organic-inorganic nanomaterials , 2010, Comptes Rendus Chimie.

[28]  Jun Chen,et al.  Flexible free-standing carbon nanotube films for model lithium-ion batteries , 2009 .

[29]  Hong Li,et al.  Thermodynamic analysis on energy densities of batteries , 2011 .

[30]  T. Coradin,et al.  Influence of pH and ionic strength on vanadium(V) oxides formation. From V2O5·nH2O gels to crystalline NaV3O8·1.5H2O , 2005 .

[31]  K. Schulte,et al.  Two percolation thresholds in carbon nanotube epoxy composites , 2007 .

[32]  Shi Xue Dou,et al.  Electrodeposition of MnO2 nanowires on carbon nanotube paper as free-standing, flexible electrode for supercapacitors , 2008 .

[33]  D. Bélanger,et al.  Direct Redox Deposition of Manganese Oxide on Multiscaled Carbon Nanotube/Microfiber Carbon Electrode for Electrochemical Capacitor , 2009 .

[34]  F. Kang,et al.  Multiwalled carbon nanotubes as a conducting additive in a LiNi0.7Co0.3O2 cathode for rechargeable lithium batteries , 2006 .