Three-dimensional ordered mesoporous cobalt nitride for fast-kinetics and stable-cycling lithium storage

Jiang G, Han H, Zhuang W, Xu X, Kaskel S, Xu F, Wang H (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Journal of Materials Chemistry A Royal Society of Chemistry

Book Volume: 7

Pages Range: 17561-17569

Journal Issue: 29

DOI: 10.1039/c9ta03391b

Abstract

The current state-of-the-art lithium-ion batteries (LIBs) still suffer from severely sluggish kinetics due to their inferior solid-state Li+ diffusion and poor conductivity. Rational design of the anode materials with three-dimensional (3D) interconnected nanostructures and conductive skeletons, especially with ordered mesopore architectures, is of paramount importance for LIBs. Herein, 3D bicontinuous cubic, ordered, conductive frameworks of cobalt nitride (om-CoN) are designed and used as anodes for LIBs. The 3D grid-like ordered mesopores (∼7.5 nm) and their very thin (<6 nm) and conductive skeletons in om-CoN simultaneously permit the enhanced Li+ permeability/diffusivity and smooth electron transfer for fast kinetics. Favorable thermodynamics and fast kinetics were confirmed by the galvanostatic intermittent titration technique and higher ratio of ion-diffusion capacity contribution and larger Li+ diffusion coefficients from cyclic voltammetry tests for om-CoN. As a result, it delivers a large capacity, a high rate capability and a stable specific capacity of 710 mA h g-1 after 350 cycles at 1 A g-1, far outperforming nonporous and disordered mesoporous CoN and the previously reported CoN, highlighting the significance and effectiveness of 3D ordered mesopores and conductivity for achieving high-performance Li storage.

Involved external institutions

Northwestern Polytechnical University / 西北工业大学 (NPU/NWPU) CN China (CN) Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Jiang, G., Han, H., Zhuang, W., Xu, X., Kaskel, S., Xu, F., & Wang, H. (2019). Three-dimensional ordered mesoporous cobalt nitride for fast-kinetics and stable-cycling lithium storage. Journal of Materials Chemistry A, 7(29), 17561-17569. https://doi.org/10.1039/c9ta03391b

MLA:

Jiang, Guangshen, et al. "Three-dimensional ordered mesoporous cobalt nitride for fast-kinetics and stable-cycling lithium storage." Journal of Materials Chemistry A 7.29 (2019): 17561-17569.

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