Issue 41, 2018

Continuously 3D printed quantum dot-based electrodes for lithium storage with ultrahigh capacities

Abstract

Although 3D printing has been explored to construct various well-designed architectures for energy storage, it is still stagnated by poor electrochemical performance owing to the slow kinetics for both electron and ion diffusion. Here, ultra-fine and mono-disperse SnO2 quantum dots (QDs) with sizes of 2–4 nm were produced on a large scale through a facile controllable sol–gel approach, affording a favorable QD-based printable ink for continuous 3D printing without clogging. Remarkably enough, the 3D printed QD-based microelectrode exhibits an ultrahigh specific capacity of 991.6 mA h g−1 (4 layers), high areal capacity and good rate capability. This superior electrochemical performance is attributed to the favorable kinetics for both electrons and ions in the 3D printed SnO2 QD-based microelectrode. This work provides an efficient, green and scalable route to apply 3D printing in the area of rechargeable microbatteries.

Graphical abstract: Continuously 3D printed quantum dot-based electrodes for lithium storage with ultrahigh capacities

Supplementary files

Article information

Article type
Communication
Submitted
03 Sep 2018
Accepted
03 Oct 2018
First published
06 Oct 2018

J. Mater. Chem. A, 2018,6, 19960-19966

Continuously 3D printed quantum dot-based electrodes for lithium storage with ultrahigh capacities

C. Zhang, K. Shen, B. Li, S. Li and S. Yang, J. Mater. Chem. A, 2018, 6, 19960 DOI: 10.1039/C8TA08559E

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