Growth‑Controllable Spindle Chain Heterostructural Anodes Based on MIL‑88A for Enhanced Lithium/Sodium Storage  

作　　者：Zhiwen Long Han Dai Caiqin Wu Zhengchun Li Hui Qiao Keliang Wang Qufu Wei 

机构地区：[1]Key Laboratory of Eco‑Textiles,Ministry of Education,School of Textile Science and Engineering,Jiangnan University,Wuxi 214122,China [2]Center for Midwest,Division for Coatings and Diamond Technologies,Fraunhofer USA,Inc.,Michigan State University,East Lansing,MI 48824,USA

出　　处：《Advanced Fiber Materials》2024年第1期297-311,共15页先进纤维材料（英文）

基　　金：supported by the Natural Science Foundation of Jiangsu Province(BK20201343);Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX23_2472);National Natural Science Foundation of China(21201083);Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices(HLOM231006);the Basic Research and Development Plan of Xiangyang(2022ABH006229)。

摘　　要：Engineering bead-on-string architectures with refined interfacial interactions and low ion diffusion barriers is a highly promising but challenging approach for lithium/sodium storage.Herein,a spindle-chain-structured Fe-based metal organic frameworks(MIL-88A)self-sacrificial template was constructed via the seed-mediated growth of Fe^(3+)and fumaric acid in an aqueous solution,which is an environmentally friendly synthesis route.The seed-mediated growth method effectively segregates the nucleation stage from the subsequent growth phase,offering precise control over the growth patterns of MIL-88A through manipulation of kinetic and thermodynamic parameters.The structural diversity,fast ion/electron diffusion,and unique interfaces of whole anodes are simultaneously enhanced through optimization of the spindle-chain structure of Fe_(2)O_(3)@N-doped carbon nanofibers(FO@NCNFs)at the atomic,nano,and macroscopic levels.Benefiting from their heteroatom-doping conductive networks,porous structure,and synergistic effects,FO@NCNFs exhibit a remarkable rate performance of 167 mAh g^(-1)at 10 A g^(-1)after 2000 cycles for lithium-ion batteries(LIBs)and long-term cycling stability with a sustained capacity of 260 mAh g^(-1)at 2 A g^(-1)after 2000 cycles for sodium-ion batteries(SIBs).This versatile approach for fabricating bead-on-string architectures at both the nanoscale and macroscale is promising for the development of high-energy-density and high-power-density electrode materials.

关 键 词：Spindle chain heterostructure Seed-mediated growth Multi-level optimization Metal-organic frameworks Lithium/sodium storage 

分 类 号：TM912[电气工程—电力电子与电力传动]