Binder-Free V2O5 Cathode for Greener Rechargeable Aluminum Battery
Binder-Free V2O5 Cathode for Greener Rechargeable Aluminum Battery
复制标题
DOI：
10.1021/am508001h
复制
发表时间：
2015-01-14
影响因子：
9.5
通讯作者：
Amine, Khalil
中科院分区：
文献类型：
--
作者：
Wang, Huali;Bai, Ying;Amine, Khalil
这封信报道了一种用于可充电铝电池的无粘合剂阴极材料的研究。该阴极通过在泡沫镍集流体上直接沉积V2 O 5来合成。使用合成的无粘合剂阴极制造的可再充电铝纽扣电池提供了239 mAh/g的初始放电容量，这远高于使用由V2 O 5纳米线和粘合剂组成的阴极制造的电池的初始放电容量。Ni-V2 O 5阴极的放电曲线在0.6 V处出现明显的放电平台，略高于普通粘结剂的V2 O 5纳米线阴极。这种改善归因于降低的电化学极化。
This letter reports on the investigation of a binder-free cathode material to be used in rechargeable aluminum batteries. This cathode is synthesized by directly depositing V2O5 on a Ni foam current collector. Rechargeable aluminum coin cells fabricated using the as-synthesized binder-free cathode delivered an initial discharge capacity of 239 mAh/g, which is much higher than that of batteries fabricated using a cathode composed of V2O5 nanowires and binder. An obvious discharge voltage plateau appeared at 0.6 V in the discharge curves of the Ni-V2O5 cathode, which is slightly higher than that of the V2O5 nanowire cathodes with common binders. This improvement is attributed to reduced electrochemical polarization.