用于锂离子电池的蚕茧蛋白衍生的氮掺杂碳包覆Li[NiCoAl]O

Silkworm Protein-Derived Nitrogen-Doped Carbon-Coated Li[NiCoAl]O for Lithium-Ion Batteries.

作者信息

Sim Gyu Sang, Shaji Nitheesha, Santhoshkumar P, Park Jae Woo, Ho Chang Won, Nanthagopal Murugan, Kim Hong Ki, Lee Chang Woo

机构信息

Department of Chemical Engineering (Integrated Engineering), College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung, Yongin 17104, Gyeonggi, Korea.

Center for the SMART Energy Platform, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung, Yongin 17104, Gyeonggi, Korea.

出版信息

Nanomaterials (Basel). 2022 Mar 31;12(7):1166. doi: 10.3390/nano12071166.

DOI:10.3390/nano12071166

PMID:35407283

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9000685/

Abstract

Li[NiCoAl]O (NCA) is a cathode material for lithium-ion batteries and has high power density and capacity. However, this material has disadvantages such as structural instability and short lifespan. To address these issues, herein, we explore the impact of N-doped carbon wrapping on NCA. Sericin, an easily obtained carbon- and nitrogen-rich component of silk cocoons, is utilized as the precursor material. The electrochemical performance evaluation of N-doped carbon-coated NCA shows that the capacity retention of 0.3 NC@NCA at 1C current density is 69.83% after 200 cycles, which is about 19% higher than the 50.65% capacity retention of bare NCA. The results reveal that the sericin-resultant N-doped carbon surface wrapping improves the cycling stability of NC@NCA.

摘要

Li[NiCoAl]O（NCA）是一种用于锂离子电池的阴极材料，具有高功率密度和容量。然而，这种材料存在结构不稳定和寿命短等缺点。为了解决这些问题，在此我们探究了氮掺杂碳包覆对NCA的影响。丝胶蛋白是一种易于获得的富含碳和氮的蚕茧成分，被用作前驱体材料。对氮掺杂碳包覆的NCA进行的电化学性能评估表明，在1C电流密度下，0.3 NC@NCA在200次循环后的容量保持率为69.83%，比裸NCA的50.65%的容量保持率高出约19%。结果表明，丝胶蛋白衍生的氮掺杂碳表面包覆提高了NC@NCA的循环稳定性。