Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 162, Issue 8, Pages A1439-A1444Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0141508jes
Keywords
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Funding
- National Key Basic Research Program of China [2014CB932400]
- China Postdoctoral Science Foundation [2013M530617]
- National Nature Science Foundation of China [51202121, 51232005]
- NSAF [U1330123]
- Shenzhen Technical Plan Project [JCYJ20120619152808478, JCYJ20130402145002382, JCYJ20130402145002425]
- Guangdong Province Innovation R&D Team Plan for Energy and Environmental Materials [2009010025]
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A novel composite anode is prepared by mixing zinc particles with activated carbon (AC) to improve the cycle performance of the neutral rechargeable zinc ion batteries. Galvanostatic charge/discharge cycling tests indicate that the capacity retention of the cell with adding 12 wt% activated carbon in Zn anode is 85.6% after 80 cycles, which is much higher than that of 56.7% for the cell using unmodified Zn anode. X-ray diffraction analysis indicates that the addition of activated carbon can suppress the formation of inactive basic zinc sulfates (Zn4SO4(OH)(6) center dot nH(2)O). Morphology, elemental mapping and N-2 adsorption and desorption measurements indicate that the pores of activated carbon can accommodate the deposition of Zn dendrites and insoluble anodic products. As a result, the cycle stability of the Zn anode has been greatly enhanced by activated carbon modification. (C) The Author(s) 2015. Published by ECS.
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