High-defect hydrophilic carbon cuboids anchored with Co/CoO nanoparticles as highly efficient and ultra-stable lithium-ion battery anodes

Sun X, Hao GP, Lu X, Xi L, Liu B, Si W, Ma C, Liu Q, Zhang Q, Kaskel S, Schmidt OG (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Journal of Materials Chemistry A Royal Society of Chemistry

Book Volume: 4

Pages Range: 10166-10173

Journal Issue: 26

DOI: 10.1039/c6ta03098j

Abstract

We propose an effective strategy to engineer a unique kind of porous carbon cuboid with tightly anchored cobalt/cobalt oxide nanoparticles (PCC-CoOx) that exhibit outstanding electrochemical performance for many key aspects of lithium-ion battery electrodes. The host carbon cuboid features an ultra-polar surface reflected by its high hydrophilicity and rich surface defects due to high heteroatom doping (N-/O-doping both higher than 10 atom%) as well as hierarchical pore systems. We loaded the porous carbon cuboid with cobalt/cobalt oxide nanoparticles through an impregnation process followed by calcination treatment. The resulting PCC-CoOx anode exhibits superior rate capability (195 mA h g-1 at 20 A g-1) and excellent cycling stability (580 mA h g-1 after 2000 cycles at 1 A g-1 with only 0.0067% capacity loss per cycle). Impressively, even after an ultra-long cycle life exceeding 10 000 cycles at 5 A g-1, the battery can recover to 1050 mA h g-1 at 0.1 A g-1, perhaps the best performance demonstrated so far for lithium storage in cobalt oxide-based electrodes. This study provides a new perspective to engineer long-life, high-power metal oxide-based electrodes for lithium-ion batteries through controlling the surface chemistry of carbon host materials.

Involved external institutions

Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden DE Germany (DE) Technische Universität Dresden DE Germany (DE) Xi’an Jiaotong-Liverpool University (XJTLU) CN China (CN) Saitama University / 埼玉大学 JP Japan (JP) Tsinghua University CN China (CN)

How to cite

APA:

Sun, X., Hao, G.-P., Lu, X., Xi, L., Liu, B., Si, W.,... Schmidt, O.G. (2016). High-defect hydrophilic carbon cuboids anchored with Co/CoO nanoparticles as highly efficient and ultra-stable lithium-ion battery anodes. Journal of Materials Chemistry A, 4(26), 10166-10173. https://doi.org/10.1039/c6ta03098j

MLA:

Sun, Xiaolei, et al. "High-defect hydrophilic carbon cuboids anchored with Co/CoO nanoparticles as highly efficient and ultra-stable lithium-ion battery anodes." Journal of Materials Chemistry A 4.26 (2016): 10166-10173.

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