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024 7 _ |a 10.1002/batt.202200465
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037 _ _ |a FZJ-2024-02564
082 _ _ |a 540
100 1 _ |a Tomar, Anubha
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245 _ _ |a Insights in Utilizing NiCo 2 O 4 /Co 3 O 4 Nanowires as Anode Material in Lithium‐Ion Batteries
260 _ _ |a Weinheim
|c 2023
|b Wiley-VCH
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520 _ _ |a In this study, a facile and cost-effective hydrothermal approach is employed to synthesize a mesoporous NiCo2O4/Co3O4 nanocomposite with nanowire morphology by using polyvinyl pyrrolidone as structure-directing agent. The obtained NiCo2O4/Co3O4 nanocomposite shows better electrochemical performance than pure NiCo2O4 due to mainly two reasons: i) a strong synergistic effect between NiCo2O4 and Co3O4, which enhances the Li+ diffusion rate as well as lower the charge-transfer resistance, and ii) the involvement of Co3O4 to contribute to the total capacity due to its high electrochemical activity. However, the performance of a NiCo2O4/Co3O4 nanocomposite electrode starts degrading after 400 cycles while pure NiCo2O4 maintains steady performance. Since the NiCo2O4/Co3O4 nanocomposite sample shows high porosity, it is believed that the obtained nanowire morphology cannot tolerate volume variations, which are generally triggered off during repeated Li+ (de-)insertion at long-term cycling. Therefore, the obtained results bring new insights in terms that there is a sweet spot between Li+ diffusion and high porosity in utilizing Co3O4 within a nanocomposite. This study is of guidance to shed the light on the research of ternary transition metal oxide nanocomposite materials for lithium-ion batteries.
536 _ _ |a 1221 - Fundamentals and Materials (POF4-122)
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536 _ _ |a BACCARA - Battery and superCapacitor ChARActerization and testing (608491)
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700 1 _ |a Adhitama, Egy
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700 1 _ |a Winter, Martin
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700 1 _ |a Placke, Tobias
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700 1 _ |a Rai, Alok Kumar
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773 _ _ |a 10.1002/batt.202200465
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