第一作者：Haipeng Wang

通讯作者：Gang Zhang, Hong-bin Sun

合写作者：Li, Hong

发表刊物：Solid State Ionics

卷号：386

影响因子：3.0

DOI码：10.1016/j.ssi.2022.116056

所属单位：Department of Chemistry, Northeastern University

教研室：物理化学

刊物所在地：NETHERLANDS

摘要：LiFePO4 is the widely accepted high-performance cathode material for lithium-ion batteries with good economy and safety. Carbon encapsulation is the ordinary way to overcome its weakness of poor conductivity. In this work, nitrogen-doped carbon coating was created by growing FeNi-ZIF-8 on the lithium iron phosphate surface and then calcining at high temperature. This network structure of nitrogen-doped carbon surrounding the lithium iron phosphate is rich in both sp2-C and defectives, which promote the ions and electron conductivity throughout nanoparticles to enhance the rate performance and cycling stability of the lithium iron phosphate cathode. The results show that the synthesized LFP@NC(FeNi) composites provide a capacity of 166.6 mAh g 1 at 0.1C and 72.9 mAh g 1 at 10C, respectively. The capacity retention rate of 500 cycles at 5C is about 94.2%. The high-rate performance and cycle stability fulfill the requirements of rechargeable lithium batteries.

关键字：LFP, (Fe Ni) doped ZIF-8, MOFs derived nitrogen-doped carbon,sp2-C rich and defective carbon coating,High-rate-performance cathode,lithium storage

论文编号：WOS:000901030400004

学科门类：理学

一级学科：化学

页面范围：116056

ISSN号：0167-2738

是否译文：否