新型炭材料（中英文）2024，Vol.39Issue(2)：308-320,13.DOI:10.1016/S1872-5805(24)60845-0
一种新型的负极材料助力高倍率及长寿命的锂/钠储存
A new anode material for high rate and long life lithium/sodium storage
摘要
Abstract
It is imperative to design suitable anode materials for both lithium-ion(LIBs)and sodium-ion batteries(SIBs)with a high-rate performance and ultralong cycling life.We fabricated a MoO2/MoS2 heterostructure that was then homogeneously distrib-uted in N,S-doped carbon nanofibers(MoO2/MoS2@NSC)by electrospinning and sulfurization.The one-dimensional carbon fiber skeleton serves as a conductive frame to decrease the diffusion pathway of Li+/Na+,while the N/S doping creates abundant active sites and significantly improves the ion diffusion kinetics.Moreover,the deposition of MoS2 nanosheets on the MoO2 bulk phase pro-duces an interface that enables fast Li+/Na+transport,which is crucial for achieving high efficiency energy storage.Consequently,as the anode for LIBs,MoO2/MoS2@NSC gives an excellent cycling stability of 640 mAh g-1 for 2 000 cycles under 5.0 A g-1 with an ultralow average capacity drop of 0.002％per cycle and an exceptional rate capability of 614 mAh g-1 at 10.0 A g-1.In SIBs,it also produces a significantly better electrochemical performance(reversible capacity of 242 mAh g-1 under 2.0 A g-1 for 2 000 cycles and 261 mAh g-1 under 5.0 A g-1).This work shows how introducing a novel interface in the anode can produce rapid Li+/Na+storage kinetics and a long cycling performance.关键词
多酸衍生物/异质结构/高倍率性能/锂离子电池/钠离子电池Key words
Polyoxometalate derivatives/Heterostructure/High-rate performance/Lithium-ion storage/Sodium-ion storage分类
化学化工引用本文复制引用
张春晖,张家源,湛杰杨,于健,范林林,杨安平,刘红,高广刚..一种新型的负极材料助力高倍率及长寿命的锂/钠储存[J].新型炭材料（中英文）,2024,39(2):308-320,13.基金项目
This work was supported by the National Natur-al Science Foundation of China(22201098),the Nat-ural Science Foundation of Shandong Province(ZR2021QB005),and the Jinan City"New University 20"Project(202228113). 国家自然科学基金(22201098) （22201098）
山东省自然科学基金(ZR2021QB005)和济南市"新高校20条"资助项目(202228113). （ZR2021QB005）
