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EN06.12.03 : Flexible All-Solid-State Li-Te Safe Batteries

5:00 PM–7:00 PM Apr 5, 2018

PCC North, 300 Level, Exhibit Hall C-E

Description
Mingqiang Zhu1

1, Huazhong University of Science & Technology, Wuhan, , China

Recently, the fast-growing market for portable electronic devices, electric vehicles (EVs) and flexible devices has placed great demands on rechargeable batteries with high energy/power density, security and flexibility. Tellurium, an element in the chalcogen family, which possesses the highest electronic conductivity among all non-metallic elements, has more advantages over sulfur and selenium, such as high utilization rate and better kinetics during charge/discharge process. However, the conventional carbonate electrolyte for Li-Te batteries does not work well and faces many inevitable security problems, such as inflammability and explosion. In this paper, single crystalline tellurium (Te) nanotubes grown on carbon fiber cloth (Te/CFC) conductive substrates have been prepared by a chemical vapor deposition (CVD), which are used as the cathode for flexible all-solid-state lithium-tellurium (Li-Te) rechargeable batteries with high safety. A high gravimetric capacity of 316 mA h g-1 and a volumetric capacity of 1979 mA h cm-3 after 500 cycles at a current density of 100 mA g-1 can be obtained, respectively.

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