Binder-free One-dimensional NiCo2O4 Nanowires@Carbon Papers Composite as an Anode for Lithium-Ion Batteries,Energy & Fuels

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Binder-free One-dimensional NiCo2O4 Nanowires@Carbon Papers Composite as an Anode for Lithium-Ion Batteries
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-09-21 , DOI: 10.1021/acs.energyfuels.0c02369
Zhoulu Wang ₁ , Yingbin Xia ₁ , Li Liu ₂ , Aoning Wang ₂ , Yi Zhang ₁ , Xiang Liu _{1,

2}

Affiliation

Transition-metal oxides are a prospective anode material for lithium ion battery because of their high theoretical specific capacity. However, the insulating nature of these oxides causes sluggish electron transport, hindering them from reaching theoretical capacity. Herein, we prepared NiCo₂O₄ nanowires (NiCo₂O₄ NWs) on carbon papers (CPs) by a hydrothermal method. The structural characterization shows that a large number of NiCo₂O₄ NWs were aligned on the CPs, forming an interconnected network. This unique architecture could enhance electrical conductivity and accommodate NiCo₂O₄ expansion during lithiation. Thus, the NiCo₂O₄ NWs/CPs composite electrode exhibits outstanding capacity and ideal cycling performance. The reversible capacity of the first cycle is 1024.9 mAh g^–1 and remains to be 1016.7 mAh g^–1 after 200 cycles at 100 mA g^–1. Our work provided a high performance anode for lithium ion batteries.

中文翻译：

无粘结剂一维NiCo ₂ O ₄纳米线@碳纸复合材料，用作锂离子电池的阳极

过渡金属氧化物因其较高的理论比容量而成为锂离子电池的潜在阳极材料。但是，这些氧化物的绝缘性质导致电子传输缓慢，从而阻碍了它们达到理论容量。在这里，我们通过水热法在复写纸（CP）上制备了NiCo ₂ O ₄纳米线（NiCo ₂ O ₄ NWs）。结构表征表明，大量NiCo ₂ O ₄ NW在CP上对齐，形成了互连的网络。这种独特的架构可以提高电导率，并在锂化过程中适应NiCo ₂ O _4的膨胀。因此，镍钴₂ O ₄ NWs / CPs复合电极具有出色的容量和理想的循环性能。第一次循环的可逆容量为1024.9毫安克^-1和保持为1016.7毫安克^-1在100mA克200次循环后^-1。我们的工作为锂离子电池提供了高性能的负极。

更新日期：2020-09-21

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