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Role of Nickel Nanoparticles in High‐Performance TiO 2 /Ni/Carbon Nanohybrid Lithium/Sodium‐Ion Battery Anodes
Author(s) -
Wang Xiaoyan,
Zhao Dong,
Wang Chao,
Xia Yonggao,
Jiang Wenshuai,
Xia Senlin,
Yin Shanshan,
Zuo Xiuxia,
Metwalli Ezzeldin,
Xiao Ying,
Sun Zaicheng,
Zhu Jin,
MüllerBuschbaum Peter,
Cheng YaJun
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201900231
Subject(s) - materials science , nanoparticle , nickel , chemical engineering , electrochemistry , lithium (medication) , anode , lithium ion battery , crystallinity , charge carrier , battery (electricity) , inorganic chemistry , nanotechnology , chemistry , composite material , electrode , metallurgy , medicine , power (physics) , physics , optoelectronics , quantum mechanics , endocrinology , engineering
Abstract Super‐small sized TiO 2 nanoparticles are in situ co‐composited with carbon and nickel nanoparticles in a facile scalable way, using difunctional methacrylate monomers as solvent and carbon source. Good control over crystallinity, morphology, and dispersion of the nanohybrid is achieved because of the thermosetting nature of the resin polymer. The effects of the nickel nanoparticle on the composition, crystallographic phase, structure, morphology, tap density, specific surface area, and electrochemical performance as both lithium‐ion and sodium‐ion battery anodes are systematically investigated. It is found that the incorporation of the in situ formed nickel nanoparticles with certain content effectively enhances the electrochemical performance including reversible capacities, cyclic stability and rate performance as both lithium‐ion and sodium‐ion battery anodes. The experimental I‐V profiles at different temperatures and theoretical calculations reveal that the charge carriers are accumulated in the amorphous carbon regions, which act as scattering centers to the carriers and lower the carrier mobility for the composite. With increasing nickel content, the mobility of the charge carriers is significantly increased, while the number of the charge carriers maintains almost constant. The nickel nanoparticles provide extra pathways for the accumulated charge, leading to reduced scatterings among the charge carriers and enhanced charge‐carrier transportation.