TY - JOUR
T1 - N-doped defective carbon with trace Co for efficient rechargeable liquid electrolyte-/all-solid-state Zn-air batteries
AU - Chen, Zhiyan
AU - Wang, Qichen
AU - Zhang, Xiaobin
AU - Lei, Yongpeng
AU - Hu, Wei
AU - Luo, Yao
AU - Wang, Yaobing
N1 - Funding Information:
Yongpeng Lei acknowledges support from the Research Project of National University of Defense Technology ( ZK16-03-32 ), and National University Student Innovation Program . Zhiyan Chen acknowledges the support form Research Foundation of Education Bureau of Hunan Province ( 16K102 ). We thank the 1W1B station for XAFS measurements in Beijing Synchrotron Radiation Facility ( BSRF ).
Funding Information:
Yongpeng Lei acknowledges support from the Research Project of National University of Defense Technology (ZK16-03-32), and National University Student Innovation Program. Zhiyan Chen acknowledges the support form Research Foundation of Education Bureau of Hunan Province (16K102). We thank the 1W1B station for XAFS measurements in Beijing Synchrotron Radiation Facility (BSRF).
Publisher Copyright:
© 2018 Science China Press
PY - 2018/5/15
Y1 - 2018/5/15
N2 - Simple synthesis of multifunctional electrocatalysts with plentiful active sites from earth-abundant materials is especially fascinating. Here, N-doped defective carbon with trace Co (1.5 wt%) was prepared via a scalable one pot solid pyrolysis process. The sample exhibits efficient bifunctional OER/ORR activity in alkaline, mainly ascribed to the unique micro-mesoporous structure (1–3 nm), high population of graphitic-N doping (up to 49.0%), abundant defects and the encapsulated Co nanoparticles with graphitized carbon. The according rechargeable liquid Zn-air batteries showed excellent performance (maximum power density of 154.0 mW cm−2; energy density of 773 Wh kg−1 at 5 mA cm−2 and charging-discharging cycling stability over 100 cycles). As a proof-of-concept, the flexible, rechargeable all-solid-state Zn-air batteries were constructed, and displayed a maximum power density as high as 45.9 mW cm−2, among the top level of those reported previously.
AB - Simple synthesis of multifunctional electrocatalysts with plentiful active sites from earth-abundant materials is especially fascinating. Here, N-doped defective carbon with trace Co (1.5 wt%) was prepared via a scalable one pot solid pyrolysis process. The sample exhibits efficient bifunctional OER/ORR activity in alkaline, mainly ascribed to the unique micro-mesoporous structure (1–3 nm), high population of graphitic-N doping (up to 49.0%), abundant defects and the encapsulated Co nanoparticles with graphitized carbon. The according rechargeable liquid Zn-air batteries showed excellent performance (maximum power density of 154.0 mW cm−2; energy density of 773 Wh kg−1 at 5 mA cm−2 and charging-discharging cycling stability over 100 cycles). As a proof-of-concept, the flexible, rechargeable all-solid-state Zn-air batteries were constructed, and displayed a maximum power density as high as 45.9 mW cm−2, among the top level of those reported previously.
KW - Defect
KW - Oxygen electrocatalysts
KW - Rechargeable all-solid-state batteries
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U2 - 10.1016/j.scib.2018.04.003
DO - 10.1016/j.scib.2018.04.003
M3 - Article
AN - SCOPUS:85046783857
VL - 63
SP - 548
EP - 555
JO - Science Bulletin
JF - Science Bulletin
SN - 2095-9273
IS - 9
ER -