期刊
SCIENCE CHINA-CHEMISTRY
卷 62, 期 3, 页码 385-392出版社
SCIENCE PRESS
DOI: 10.1007/s11426-018-9395-1
关键词
noble carbon; oxygen reduction reaction; asymmetric-electrolyte Zn-air battery; energy density
资金
- 1000 Plan Professorship for Young Talents, Hundred Talents Program of Fujian Province
- Fujian Science and Technology Key Project [2016H0043]
- National Natural Science Foundation of China [21703249, 21701175]
We report a relatively low-temperature molten salt strategy to prepare hollow structured N-doped noble carbon (h-NNC) with highly desirable features of ultra-large surface area (1957 m(2) g(-1)) and high graphitization, endowing the h-NNC with high activity toward catalysis of oxygen reduction reaction in acidic medium. The h-NNC is applied as cathode catalyst of an asymmetrical-electrolyte Zn-air battery, which exhibits an open circuit voltage of 2.11 V, a power density up to 270 mW cm(-2), and an energy density of 1279 W h kg(-1), behaving advantages over the conventional Zn-air batteries.
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