阳极
锂(药物)
材料科学
电化学
碳纤维
钠
化学工程
电极
钠离子电池
复合数
化学
冶金
复合材料
法拉第效率
医学
工程类
内分泌学
物理化学
作者
Huan Zhang,Dongfang Yu,Fei Yuan,Yachao Jin,Li Song,Mingdao Zhang,He‐Gen Zheng
标识
DOI:10.1016/j.cej.2024.151318
摘要
Constructing heterogeneous electrodes to confront various electrochemical and structural requirements is demonstrated to be crucial for improving the sodium and lithium storage performances. Herein, a novel design of ZnS/Co heterostructures is expounded with abundant phase boundaries encapsulated in highly-conductive N/S-doped "pinecone"-like carbon framework (ZnS/Co@NSC-450) as a superior anode for sodium ion batteries (SIBs) and lithium-ion batteries (LIBs). In ZnS/Co@NSC-450, the ZnS/Co heterostructures can improve the electronic conductivity of material and stabilize the electrode structure integrity during cycling, while the N/S-doped "pinecone"-like carbon is beneficial for alleviating the volume expansion effect of active materials, providing additional active sites for sodium/lithium storage and ensuring the rapid electron/ion transfer across the electrode. Due to the synergistic effect of multiple components, both the SIBs and LIBs with ZnS/Co@NSC-450 anodes exhibit high-rate capability (476 mAh g−1 at 6.4 A g−1 for SIBs and 387 mAh g−1 at 12.8 A g−1 for LIBs) and outstanding long-term cycling stability (557 mAh g−1 at 2 A g−1 for SIBs after 1500 cycles and 767 mAh g−1 for LIBs after 1000 cycles). These results disclose the promising potential of ZnS/Co@NSC-450 toward high-performance SIBs and LIBs.
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