期刊论文

Duan, Junfei（段军飞）;Zhu, Zhiying

英文

Applied Surface Science

0169-4332

2019

489

528-537

10.1016/j.apsusc.2019.06.011

The crystalline structures of Co9S8/NSC@C, Co9S8/NSC and Co9S8 were investigated, as shown in Fig. 1a. All these diffraction peaks were clearly indexed to the cubic Co9S8 structure (JCPDS No. 86-2273) with no impurity observed compared with the precursor of S-Co-PPy (Fig. S1). Moreover, the peaks of carbon were not detected in Co9S8/NSC@C and Co9S8/NSC, which could be ascribed to its low carbon content and high crystallinity of Co9S8. The existence of carbon in Co9S8/NSC and Co9S8/NSC@C is

本校为第一且通讯机构

The lithium storage performance of Co9S8 suffers from the poor cycling performance due to the inferior electron conductivity, huge volume expansion and structure deterioration during cycling. Herein, we develop a new approach to prepare the Co9S8 embedded in bifunctional N/S co-doped carbon/carbon (Co9S8/[email protected]) via the pyrolysis of S- and Co(II)-containing polypyrrole precursor accompanied by Ethanol Steam Reforming. The process simultaneously restricted the Co9S8 grains growth and conducted carbon deposition on the outer surface of...