新型锂离子电池负极材料NiSb_2的研究

采用悬浮熔炼方法合成了新型锂离子电池负极材料NiSb2,并研究了其电化学性能。研究发现,退火与非退火NiSb2的首次可逆容量分别为494mAhg-1和430mAhg-1。经过15个循环后,非退火的NiSb2的放电容量仍保持在260mAhg-1,而退火的只剩下160mAhg-1。由于NiSb2具有优异的电化学性能,它可成为一种新型的锂离子电池负极材料。

Study on NiSb_2as a New Lithium-Ions Batteries Anode Material

To obtain a new anode material for lit hium-ion battery,electrochemical properties on NiSb 2 intermetallic compound synthesized by levitation melting w ere investigated.It is found that th e reversible capacities of unannealed and annealed NiSb 2 electrodes are about 494mAhg -1 and 430mAhg -1 ,respectively,at the first cycle.T he discharge capacity of the unannealed NiSb 2 electrode is still maintained at 260mAhg -1 even after 15charge-discharge cyclies,while the annealed one was less t han 160mAhg -1 .Since NiSb 2 exhibits a superior property,it wou ld be a promising anode material for l ithium -ion secondary batteries.