A 3D Porous MgFe2O4 Integrative Electrode as a Binder‐Free Anode with High Rate Capability and Long Cycle Lifetime,ChemElectroChem

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A 3D Porous MgFe2O4 Integrative Electrode as a Binder‐Free Anode with High Rate Capability and Long Cycle Lifetime
ChemElectroChem ( IF 3.5 ) Pub Date : 2018-12-19 , DOI: 10.1002/celc.201801374
Yanhong Yin ₁ , Wenfeng Liu ₂ , Rongzhen Gao ₁ , Shuting Yang _{1,

2}

Affiliation

A superior 3D architecture Ni foam/MgFe₂O₄ integrative electrode was firstly designed and synthesized via a simple hydrothermal method and subsequent calcination as a binder‐free anode for lithium‐ion batteries (LIBs). MgFe₂O₄ nanoparticles with diameter of about 60 nm interconnect with each other to form porous nanosheets and anchor on the Ni foam (N‐MFO). The 3D architectural design with superior conductivity and a strong skeleton structure not only provides fast kinetics, reduces the polarization and enhances the rate performance, but also buffers volume expansion and improves the cycle stability during the discharge/charge process. In addition, the interfacial lithium storage of the N‐MFO electrode promotes high lithium‐storage capacity, superior cycle stability and impressive rate capability. Even cycling at a current density of 5 A g⁻¹ for 1000 cycles, the capacity remains stable at about 780 mAh g⁻¹.

中文翻译：

3D多孔MgFe2O4集成电极作为无粘结剂阳极，具有高倍率能力和长循环寿命

首先通过简单的水热法设计并合成了一种卓越的3D结构Ni泡沫/ MgFe ₂ O ₄集成电极，随后煅烧为锂离子电池（LIB）的无粘合剂阳极。镁铁₂ O ₄直径约60 nm的纳米颗粒相互连接，形成多孔纳米片并锚固在Ni泡沫（N-MFO）上。具有卓越电导率和坚固骨架结构的3D建筑设计不仅提供快速动力学，降低极化和增强倍率性能，而且还可以缓冲体积膨胀并改善放电/充电过程中的循环稳定性。此外，N-MFO电极的界面锂存储可提高锂存储容量，出色的循环稳定性和令人印象深刻的倍率功能。即使在5 A g ^-1的电流密度下循环1000次，容量也保持稳定在约780 mAh g ^-1。

更新日期：2018-12-19

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