Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 16, Pages 13813-13818Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b01387
Keywords
lithium-sulfur batteries; sodium-sulfur batteries; carbonate-based electrolyte; ultramicroporous carbon; activation free-approach; metal-sulfur batteries
Funding
- National Key Research and Development Plan [2016YFB0901500]
- National Natural Science Fund of China [GG2060190212, 21471142, 21521001, 21671181, 21671183, 51602303]
- Anhui Provincial Natural Science Foundation [1608085MB22]
- Fundamental Research Funds for the Central Universities [WK2060190053]
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We report an activation-free approach for fabricating ultramicroporous carbon as an accommodation of sulfur molecules for Li-S and Na-S batteries applications in carbonate-based electrolyte. Because of the high specific surface area of 967 m(2) g(-1), as well as 51.8% of the pore volume is contributed by ultramicropore with pore size less than 0.7 nm, sulfur cathode exhibits superior electrochemical behavior in carbonate-based electrolyte with a capacity of 507.9 mA h g(-1) after 500 cycles at 2 C in Li-S batteries and 392 mA. h g(-1) after 200 cycles at 1 C in Na-S batteries, respectively.
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