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V_6O_(13)用作常温锂蓄电池的阴极,不需要严格的化学计量,易于制取,比能量高,并有优良的充放电循环性能。我们曾对非计量 V_6O_(13)(VO_(2.19))作电池的循环测试,电流密度为1mA/cm~2时,有高而稳定的比容量。Abraham 指出用其它金属取代部分钒的可能性。本文拟用金属 M(Ti、W、Co)取代 V_6O_(13)中一部分 V,合成M_(0∶8)V_(5∶2)O_(13)化合物。用它为阴极材料,装配电池,测试电化学性能,并与计量 V_6O_(13)比较。
V_6O_ (13) is used as the cathode of normal temperature lithium batteries. It does not require strict stoichiometry, is easy to prepare, has higher specific energy, and has excellent charge-discharge cycle performance. We have a non-metric V_6O_ (13) (VO_ (2.19)) for the battery cycle test, the current density of 1mA / cm ~ 2, high and stable specific capacity. Abraham points out the possibility of replacing some of the vanadium with other metals. In this paper, some M (0: 8) V_ (5: 2) O_ (13) compounds were synthesized by replacing part of V in V_6O_ (13) with metal M (Ti, W, Co) Use it as the cathode material, assemble the battery, test the electrochemical performance, and compare with the measurement V_6O_ (13).