Facile chemical bath deposition of Co3O4 nanowires on nickel foam directly as conductive agent- and binder-free anode for lithium ion batteries

Facile chemical bath deposition of Co3O4 nanowires on nickel foam directly as conductive agent- and binder-free anode for lithium ion batteries
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在泡沫镍上轻松化学浴沉积 Co3O4 纳米线,直接作为锂离子电池的无导电剂和无粘合剂阳极

DOI:
10.1016/j.ceramint.2014.02.108
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发表时间:
2014-08
影响因子:
5.2
通讯作者:
Zhang, Bao
Zhang, Bao
中科院分区:
材料科学1区
文献类型:
--
作者:
Zheng, Junchao;Zhang, Bao

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在温和的条件下,采用简单的化学浴沉积方法在泡沫镍衬底上合成了co3o4纳米线。制备的co3o4与Ni泡沫紧密锚定,其BET表面积高达20.7 m2 - 1,电极与电解质之间有良好的接触,从而提高了电子和Li+的透射率。结果表明,在泡沫镍上直接制备的co3o4纳米线作为锂离子电池的无导电剂和无粘结剂电极具有优异的电化学性能。当电流密度为0.2 A g−1时,其初始可逆比容量为944 mAh g−1,库仑效率为71.7%,并且在100次循环中几乎没有容量衰减。在4.0 A g−1时,它也可以显示663 mAh的g−1容量。
In this report, Co3O4nanowires on nickel foam substrate are synthesized by a facile chemical bath deposition route under a mild condition. The prepared Co3O4is tightly anchored with Ni foam with a large BET surface area of 20.7 m2g−1, providing good contact between electrode and electrolyte and thus improving the electron and Li+transmission. As a result, the fabricated Co3O4nanowires on nickel foam directly as conductive agent- and binder-free electrode for lithium ion batteries show superior electrochemical performance. When cycled at the current density of 0.2 A g−1, it delivers an initial reversible specific capacity of 944 mAh g−1with a coulombic efficiency of 71.7%, and shows almost no capacity fading during 100 cycles. As performed at 4.0 A g−1, it can also show 663 mAh g−1capacity.
锚定Co3O4纳米粒子的石墨烯作为锂离子电池负极增强可逆容量和循环性能
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