TY  - JOUR
AU  - Tomar, Anubha
AU  - Adhitama, Egy
AU  - Winter, Martin
AU  - Placke, Tobias
AU  - Rai, Alok Kumar
TI  - Insights in Utilizing NiCo 2 O 4 /Co 3 O 4 Nanowires as Anode Material in Lithium‐Ion Batteries
JO  - Batteries & supercaps
VL  - 6
IS  - 3
SN  - 2566-6223
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2024-02564
SP  - e202200465
PY  - 2023
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000907979400001
DO  - DOI:10.1002/batt.202200465
UR  - https://juser.fz-juelich.de/record/1024914
ER  -