Microbattery platform based on single microtube for lithium storage and in-situ investigation

Date

May 14, 2018

Time

1:30 PM - 2:30 PM

Speaker

Lixiang Liu

Affiliation

IIN

Language

en

Main Topic

Materialien

Other Topics

Materialien, Physik

Host

Kristina Krummer-Meier

Description

Microsized lithium ion batteries (MLIBs) are of great importance for modern microelectromechanical systems (MEMS), smart medical implants, hearing aids, etc.[1] In comparison with common thin-film MLIBs, 3D microbattery designs based on micro- and nanostructured architectures can provide relatively higher areal power and energy densities per footprint area on the limited chip surfaces.[2, 3] Here, we demonstrate an on-chip compatible method to fabricate a 3D MLIB platform (Fig. 1a), which is constructed based on a single hybrid NiO/Fe2O3 microtube by rolled-up nanotechnology.[4] After systematic battery tests, an outstanding reversible areal capacity up to 2.68 mA h cm-2 (significantly higher than that of the single NiO microtube) is disclosed. Also importantly, the incorporation of Fe2O3 into the NiO nanomembrane matrix stabilizes the anode material (don’t have obvious capacity decays after long cycling tests of the MLIBs). Besides, our design for the MLIBs allows in-situ Raman studies during the electrochemical charge and discharge procedures in a single microtube electrode (Fig. 1b). Therefore, we can obtain real-time information of the active materials upon cycling.[5] Our progress reveals the important role of the introduced Fe2O3 component on improving the anode electrochemical performances. References: [1] L. Baggetto, R. A. Niessen, F. Roozeboom, P. H. Notten, Adv. Funct. Mater. 2008, 18, 1057. [2] L. Liu, Q .Weng, X. Liu, X. Sun, L. Zhang, O. G. Schmidt, Small 2017, 13, 1701847. [3] J. H. Pikul, H. G. Zhang, J. Cho, P. V. Braun, W. P. King, Nat. Commun. 2013, 4, 1732. [4] O. G. Schmidt, K. Eberl, Nature 2001, 410, 168. [5] J. Wan, et al., Adv. Energy Mater. 2015, 5, 1401742.

Links

• Seminars at the IFW

Last modified: May 14, 2018, 10:02:31 AM