Ultrathin Co 3 O 4 Layers with Large Contact Area on Carbon Fibers as High-Performance Electrode for Flexible Zinc-Air Battery Integrated with Flexible Display

Chen, Xu; Liu, Bin; Zhong, Cheng; Liu, Zhi; Liu, Jie; Ma, Lu; Deng, Yida; Han, Xiaopeng; Wu, Tianpin; Hu, Wenbin; Lu, Jun

doi:10.1002/aenm.201700779

Title: Ultrathin Co ₃ O ₄ Layers with Large Contact Area on Carbon Fibers as High-Performance Electrode for Flexible Zinc-Air Battery Integrated with Flexible Display

Journal Article · Mon May 22 00:00:00 EDT 2017 · Advanced Energy Materials

DOI:https://doi.org/10.1002/aenm.201700779· OSTI ID:1462742

Chen, Xu ^[1]; Liu, Bin ^[1]; Zhong, Cheng ^[2]; Liu, Zhi ^[1]; Liu, Jie ^[3]; Ma, Lu ^[4]; Deng, Yida ^[5]; Han, Xiaopeng ^[5]; Wu, Tianpin ^[4]; Hu, Wenbin ^[2];

^[6]

State Key Laboratory of Metal Matrix Composites, Department of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240 China
Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Material Science and Engineering, Tianjin University, Tianjin 300072 China; Tianjin Key Laboratory of Composite and Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072 China
Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Material Science and Engineering, Tianjin University, Tianjin 300072 China
X-ray Science Division, Argonne National Laboratory, Lemont IL USA
Tianjin Key Laboratory of Composite and Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072 China
Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont IL USA

A facile and binder-free method is developed for the in situ and horizontal growth of ultrathin mesoporous Co₃O₄ layers on the surface of carbon fibers in the carbon cloth (ultrathin Co₃O₄/CC) as high-performance air electrode for the flexible Zn-air battery. In particular, the ultrathin Co₃O₄ layers have a maximum contact area on the conductive support, facilitating the rapid electron transport and preventing the aggregation of ultrathin layers. The ultrathin feature of Co₃O₄ layers is characterized by the transmission electron microscopy, Raman spectra, and X-ray absorption fine structure spectroscopy. Benefiting from the high utilization degree of active materials and rapid charge transport, the mass activity for oxygen reduction and evolution reactions of the ultrathin Co₃O₄/CC electrode is more than 10 times higher than that of the carbon cloth loaded with commercial Co₃O₄ nanoparticles. Compared to the commercial Co₃O₄/CC electrode, the flexible Zn-air battery using ultrathin Co₃O₄/CC electrode exhibits excellent rechargeable performance and high mechanical stability. Furthermore, the flexible Zn-air battery is integrated with a flexible display unit. The whole integrated device can operate without obvious performance degradation under serious deformation and even during the cutting process, which makes it highly promising for wearable and roll-up optoelectronics.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

DOE Contract Number:: AC02-06CH11357

OSTI ID:: 1462742

Journal Information:: Advanced Energy Materials, Vol. 7, Issue 18; ISSN 1614-6832

Publisher:: Wiley

Country of Publication:: United States

Language:: English

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