Electrochemical reaction mechanism for Bi2Te3-based anode material in highly durable all solid-state lithium-ion batteries

The electrochemical reaction mechanism of Bi(2)Te(3)as negative electrode in all solid-stateLi-ion battery (LIB) having LiBH(4)as a solid electrolyte is established herein. To observe the effect of nanosized electrode material on the battery performance, Bi(2)Te(3)nanorods were also used as anode material similar to the above battery setup. The galvanostatic discharge/charge profile suggested the first discharge and charge capacities as 533 mAhg(-1)and 288 mAhg(-1)for bulk Bi2Te3, which reduced to 219 mAhg(-1)and 218 mAhg(-1), respectively, after 50 cycles. In case of nanorods, the first discharge and charge capacity were observed to be 489 mAhg(-1)and 281 mAhg(-1), respectively, which reduced to 235 mAhg(-1)and 233 mAhg(-1), respectively, after 50 cycles. The mechanism of lithiation/delithiation of Bi2Te3, as well as better performance of Bi(2)Te(3)nanorods over its bulk counterpart, has been proposed herein.