التفاصيل البيبلوغرافية
| العنوان: |
Controlling interlayer spacing and chemical bond to enhance the electronic and ionic of Delta‐MnO2 as Zinc‐ion batteries cathode. |
| المؤلفون: |
Zhang, Jianhua, Li, Wenbin, Wang, Jingjing, Pu, Xiaohua, Zhang, Gaini, Wang, Shuai, Wang, Ni, Li, Xifei |
| المصدر: |
International Journal of Energy Research; 10/25/2022, Vol. 46 Issue 13, p18839-18848, 10p |
| مصطلحات موضوعية: |
ZINC ions, CHEMICAL bonds, IONIC conductivity, CATHODES, ELECTRIC conductivity, SUPERIONIC conductors, METALLIC oxides |
| مستخلص: |
Summary: The low electrical and ionic conductivity of the δ‐MnO2 cathode material cause its sluggish charge transport kinetics with poor rate capability for zinc‐ion batteries (ZIBs). Herein, K+ and Na+ are successfully pre‐intercalated into the interlayer of δ‐MnO2 possessing the morphology of nanosheets self‐assembled flower‐like submicrosphere. Compared with Na+, the pre‐intercalation of K+ synchronously optimizes the interlayer spacing as well as Mn–O bond and hence facilitates the electronic and ionic conductivity with enhancing rate capability. At a rate of 3 A g−1, the specific capacity of K+ pre‐intercalated δ‐MnO2 cathode reaches 100.1 mAh g−1 after 600 cycles. Meanwhile, a diffusion‐controlled and intercalation pseudocapacitive charge storage process is revealed at lower and higher potential scans, respectively. The research results provide a potential strategy for Zn2+ storage property improvement of layered metallic oxide cathodes. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
