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Highly durable and cycle-stable lithium storage based on MnO nanoparticles-decorated 3D interconnected CNT/graphene architecture

Abstract

To accommodate huge volume change and boost inferior electrochemical reaction kinetics of manganous oxide anodes for lithium-ion batteries, an unique 3D porous CNT/graphene-MnO architecture is synthesized, where MnO nanoparticles are homogeneously decorated on the 3D interconnected CNT/graphene (3DCG) conductive networks. The porous 3DCG matrix with abundant open pores and large surface area can provide efficient channels for fast charge transport and make fully contact between the electrode and electrolyte, leading to improved electrochemical activity. The robust 3D architecture offers abundant stress buffer space to tolerates the volume expansion and ensures robust structural stability during the electrochemical processes. The synergistic effect between components endows 3DCG/MnO electrodes with excellent electrochemical performance, retaining a high specific capacity of 526.7 mAh g$^{-1}$ at 2.0 A g$^{-1}$ with 98\% capacity retention over 1400 cycles. This work provides a promising route for practical application of fast and durable lithium-ion batteries and suggestive insights for rational structural design in other transition metal oxides.

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Publication details

The article was received on 04 Mar 2018, accepted on 14 Jun 2018 and first published on 14 Jun 2018


Article type: Paper
DOI: 10.1039/C8NR01835A
Citation: Nanoscale, 2018, Accepted Manuscript
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    Highly durable and cycle-stable lithium storage based on MnO nanoparticles-decorated 3D interconnected CNT/graphene architecture

    J. Wang, C. Wu, Q. Deng, K. Jiang, L. Shang, Z. Hu and J. Chu, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR01835A

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