한양대학교 ERICA 산학협력단

> 연구정보 > 연구성과 > 금주의 우수논문

한양대학교 재직중인 전임교원이 출판한 SCIE급 논문중 상위 10%이내 논문 (인문계열 SSCI 상위50%이내)
매주 업데이트

SCI Article

Hierarchically Designed 3D Holey C2N Aerogels as Bifunctional Oxygen Electrodes for Flexible and Rechargeable Zn-Air Batteries

	성명	이상욱 ()
	소속	대학원 바이오나노학과
	캠퍼스
	우수선정주	2018년 02월 1째주

Author

Shinde, Sambhaji S. (Dept Mat & Chem Engn); Yu, Jin-Young (Dept Mat & Chem Engn); Kim, Dong-Hyung (Dept Mat & Chem Engn); 이정호 (Dept Mat & Chem Engn) corresponding author; Lee, Chi Ho (Dept Bionano Technol); 이상욱 (Dept Bionano Technol) corresponding author

Corresponding Author Info

Lee, JH (reprint author), Hanyang Univ, Dept Mat & Chem Engn, Ansan 15588, Kyunggido, South Korea.; Lee, SU (reprint author), Hanyang Univ, Dept Bionano Technol, Ansan 15588, Kyunggido, South Korea.; Lee, SU (reprint author), Hanyang Univ, Dept Appl Chem,

E-mail

sulee@hanyang.ac.kr

Document Type

Article

Source

ACS NANO Volume:12 Issue:1 Pages:596-608 Published:2018

Times Cited

External Information

http://dx.doi.org/10.1021/acsnano.7b07473

Abstract

The future of electrochemical energy storage spotlights on the designed formation of highly efficient and robust bifunctional oxygen electrocatalysts that facilitate advanced rechargeable metal-air batteries. We introduce a scalable facile strategy for the construction of a hierarchical three-dimensional sulfur-modulated holey C2N aerogels (S-C(2)NA) as bifunctional catalysts for Zn-air and Li-O-2 batteries. The S-C(2)NA exhibited ultrahigh surface area (4943 m(2) g(-1)) and superb electrocatalytic activities with lowest reversible oxygen electrode index similar to 0.65 V, outperforms the highly active bifunctional and commercial (Pt/C and RuO2) catalysts. Density functional theory and experimental results reveal that the favorable electronic structure and atomic coordination of holey C-N skeleton enable the reversible oxygen reactions. The resulting Zn-air batteries with liquid electrolytes and the solid-state batteries with S-C(2)NA air cathodes exhibit superb energy densities (958 and 862 Wh kg(-1)), low charge-discharge polarizations, excellent reversibility, and ultralong cycling lives (750 and 460 h) than the commercial Pt/C+RuO2 catalysts, respectively. Notably, Li-O-2 batteries with S-C(2)NA demonstrated an outstanding specific capacity of similar to 648.7 mA. h g(-1) and reversible charge-discharge potentials over 200 cycles, illustrating great potential for commercial next-generation rechargeable power sources of flexible electronics.

Web of Science Categories

Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary

Funding

National Research Foundation of Korea (NRF) - Korean government (MSIP) [2017R1A2B3006941]; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT, and Future Planning [NRF-2015R1C1A1A02036670]

Language

English

attached file