Improved cycling performance of the micro-cubes like NiO-Co3O4-MnCo2O4 material as competent and durable anode material for energy storage and conversion in Li-ion batteries

Autor: Rengapillai Subadevi, S. Raghu, Marimuthu Sivakumar, Rm. Gnanamuthu, S. Kumaraguru
Rok vydání: 2021
Předmět:
Zdroj: Ionics. 27:5043-5054
ISSN: 1862-0760
0947-7047
DOI: 10.1007/s11581-021-04155-1
Popis: In this work, the NiO-Co3O4-MnCo2O4 (NCM) active material is prepared via a convenient hydrothermal method for energy storage and conversion in Li-ion rechargeable batteries application. The interpretation of XRD results correlates that the synthesized NCM has been oriented in the cubic spinel structure. The prepared NCM divulges micro-cubes-like morphology with aggregated structure and it has been identified that the NCM displays the particle size ranges from 150 to 500 nm. The TEM results show that the synthesized NCM micro-cubes express a highly crystalline nature and the pattern is indexed to (222), (400), (440), (444), and (642) planes, respectively. The discharge–charge profile supplies an initial cycle discharge capacity of 1271 mAh g−1 at the current density of 100 mA g−1. It provides a reversible capacity of 696 mAh g−1 even after 200 cycles with a coulombic efficiency of 99%. Similarly, the NCM acquired at 600 °C for 2 h, 4 h, and 6 h provides a huge reversible discharge capacity of 540, 519, and 521 mAh g−1 even after 109, 120, and 101 cycles. Thus, the prepared material was a suitable candidate for energy storage and conversion in Li-ion rechargeable batteries.
Databáze: OpenAIRE
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