High-yield carbon nanofibers derived from nanoporous Cu catalyst alloyed with Ni for sodium storage with high cycling stability  

作　　者：Zhenyang Yu Changqi Duan Qi Sun Jinhu Ma Yifang Zhang Mengmeng Zhang Delin Zhang Zhijia Zhang Zhiyan Jia Yong Jiang 

机构地区：[1]School of Mechanical Engineering,Tiangong University,Tianjin 300387,China [2]School of Material Science and Engineering,State Key Laboratory of Separation Membrane and Membrane Processes,Tiangong University,Tianjin 300387,China [3]School of Electronic and Information Engineering,Institute of Quantum Materials and Devices,Tiangong University,Tianjin 300387,China [4]Cangzhou Institute of Tiangong University,Cangzhou 061000,China [5]Jiangsu Fuyuan Mustard Seed Space New Material Research Institute Co.,Ltd.,Xuzhou 221100,China [6]School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第4期925-935,共11页矿物冶金与材料学报(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52271011 and 52102291);the Structure Design and Mass Preparation of High Stability and Low Cost PEM Hydroelectrolysis Non-Iridium Catalyst,China(No.KC22453)

摘　　要：High-performance and low-cost anode materials are critical for superior sodium-ion batteries(SIBs).Herein,high-yield porous carbon nanofiber(CNF)anode materials(named CNFs@Cu–Ni)are prepared by chemical vapor deposition using a specialized nanoporous Cu–Ni alloy catalyst.Density functional theory calculations indicate that Ni incorporation results in a shift of the d-band center of the catalyst from−2.34157 to−1.93682 eV.This phenomenon elucidates the remarkable adsorption capacity of the Cu–Ni catalyst toward C2H2,thereby facilitating the catalytic growth of high-performance CNFs.With this approach,a superior yield of 258.6%for deposited carbon is reached after growth for 1 h.The CNFs@Cu–Ni anode presents an outstanding discharge capacity of 193.6 mAh·g^(−1) at 1.0 A·g^(−1)over 1000 cycles and an exceptional rate capability by maintaining a capacity of 158.9 mAh·g^(−1)even at 5.0 A·g^(−1)in an ether-based electrolyte.It also exhibits excellent performance in the CNFs@Cu–Ni//NVP full battery attributed to the presence of abundant Na+adsorption sites on its surface.This study presents a new concept for the advancement of high-performance carbonaceous electrodes for SIBs.

关 键 词：carbon nanofibers chemical vapor deposition Cu-based catalyst anode materials sodium-ion batteries 

分 类 号：O64[理学—物理化学]