PMID- 32036114 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200323 IS - 1095-7103 (Electronic) IS - 0021-9797 (Linking) VI - 567 DP - 2020 May 1 TI - The lithium ions storage behavior of heteroatom-mediated echinus-like porous carbon spheres: From co-doping to multi-atom doping. PG - 54-64 LID - S0021-9797(20)30121-1 [pii] LID - 10.1016/j.jcis.2020.01.107 [doi] AB - This study proposed a facile method to prepare echinus-like porous carbon spheres (PCS) with different heteroatom doping for lithium ions battery (LIBs). A metal-organophosphine framework (MOPF) was synthesized by employing riboflavin sodium phosphate as an organic ligand to conjugate with metal ions and then carbonized at mild temperature, leading to the formation of heteroatom doped PCS (H-PCS). As a result, (N, P) co-, (N, P, Ni) tri-, (N, P, Co) tri- and (N, Ni, Co, P) tetra-doped PCS were obtained to examine the insight into lithium-ion storage behavior of H-PCS. It was found that the specific surface area, pore texture and structural defects of H-PCS were dependent on doping of heteroatoms as well as the charge transfer resistance and Li-ion diffusion coefficient. Significantly, the redox reaction potential during the charge/discharge could be mediated upon the doping. Thus, when evaluated as anode for LIBs, the (N, Ni, Co, P) tetra-doped PCS exhibited highly reversible capacity of 680 mAh g(-1) at 0.1 A g(-1), excellent rate capability (115.9 mAh g(-1) at 1.0 A g(-1)) and superior cycling performance (399.6 mAh g(-1) at 0.1 A g(-1)). Moreover, the cyclic voltammogram measurements demonstrated that the doping of metal atoms was favorable for improving the capacitive contribution of surface limited diffusion. Thus, this work highlighted the importance of HCP with defined doping which could be considered as one of the prominent candidates for high-performance LIBs' anode. CI - Copyright (c) 2020 Elsevier Inc. All rights reserved. FAU - Chen, Zhuo AU - Chen Z AD - Ningxia Key Laboratory of Photovoltaic Materials, Ningxia University, Yinchuan, Ningxia 750021, PR China. FAU - Li, Haibo AU - Li H AD - Ningxia Key Laboratory of Photovoltaic Materials, Ningxia University, Yinchuan, Ningxia 750021, PR China. Electronic address: lihaibo@nxu.edu.cn. LA - eng PT - Journal Article DEP - 20200131 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 SB - IM OTO - NOTNLM OT - Energy storage OT - Heteroatom doping OT - Porous carbon spheres OT - Sol-gel method COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2020/02/10 06:00 MHDA- 2020/02/10 06:01 CRDT- 2020/02/10 06:00 PHST- 2019/12/04 00:00 [received] PHST- 2020/01/23 00:00 [revised] PHST- 2020/01/28 00:00 [accepted] PHST- 2020/02/10 06:00 [pubmed] PHST- 2020/02/10 06:01 [medline] PHST- 2020/02/10 06:00 [entrez] AID - S0021-9797(20)30121-1 [pii] AID - 10.1016/j.jcis.2020.01.107 [doi] PST - ppublish SO - J Colloid Interface Sci. 2020 May 1;567:54-64. doi: 10.1016/j.jcis.2020.01.107. Epub 2020 Jan 31.