Lithium electrochemistry of Cr1-xFexN (0 <= x <= 1) ternary transition-metal nitrides has been investigated for the first time. The reversible capacities of Cr1-xFexN ternary transition-metal nitrides were all above 1000 mAh/g, and their electrodes overcame the large polarization of CrN electrode and the bad cyclic stable of FeN electrode, which made them promising candidates for lithium-ion battery anode. Our results demonstrated that the reversible formation and decomposition of Li3N could be driven by nanosized metal Fe or Cr. (C) 2008 The Electrochemical Society. [DOI: 10.1149/1.2988835] All rights reserved.