Coaxial MWNTs@MnCo2O4 wrapped in conducting graphene for enhanced lithium ion storage
Source abstract
Abstract
In this report, nanocomposites of MWNTs@MnCo2O4@Gs are synthesized via a wet-chemical approach, in which double layer of MnCo2O4 particles evenly attached on MWNTs and wrapped in graphene. As an anode material for lithium batteries (LIBs), the designed MWNTs@MnCo2O4@Gs delivers LIB performance with superior rate capability and a large reversible capacity of 1094 mAh g−1 after 300 cycles tested at 200 mA g−1, respectively. The MWNTs@MnCo2O4@Gs electrodes deliver reversible capacities of 752 and 520 mAh g−1 after 80 cycles at high current densities of 1.0 and 3.0 A g−1, being much larger than those values of 155 and 125 mAh g−1 without Gs wrapping. The results revealed that the reserved space structure combined with conductive carbon supporting of MWNTs and Gs can effectively provide buffer for the volume expansion of Li+ insertion/extraction process, promote the ion/electron transport, and finally improve their LIB performance. Thus, such structure design supplied a promising route to obtain binary metal oxide-based anode in order to achieve high-performance LIBs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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