Details

Autor(en) / Beteiligte

• Sun, Daming
• Wang, Hao
• Deng, Bangwei
• Zhang, Huan
• Wang, Lei
• Wan, Qi
• Yan, Xinxiu
• Qu, Meizhen

Titel

A Mn Fe based Prussian blue Analogue@Reduced graphene oxide composite as high capacity and superior rate capability anode for lithium-ion batteries

Ist Teil von

• Carbon (New York), 2019-03, Vol.143, p.706-713

Ort / Verlag

New York: Elsevier BV

Erscheinungsjahr

2019

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• Prussian blue analogues (PBAs) have attracted increasing attention in energy research due to their open frameworks and short channels. However, the practical application of PBAs as anode materials for lithium-ion batteries (LIBs) is severely limited by their low capacity and poor cycling performance. In this work, a Mn-Fe based Prussian blue analogue@reduced graphene oxide (Mn-PBA@rGO) composite is prepared via an in-situ synthesis process to maximum using the residual manganese ions in the GO suspension. The Mn-PBA nanoparticles (NPs) anchor tightly on the rGO layers that form a conductive network in the composite. The forceful synergistic effect between the highly conductive N-doped rGO layers and Mn-PBA NPs can efficaciously mitigate the structural collapse and aggregation during the insertion and extraction of Li+. Because of above merits, the Mn-PBA@rGO composite exhibits a high reversible capacity of 1167.7 mAh g-1 at a current density of 0.1 A g-1 and superior rate capability, delivering capacities of 844.0, 594.5, and 400.1 mAh g-1 at 3, 5, and 10 A g-1, respectively. The specific capacities at 3, 5 and 10 A g-1 can be equal to the initial one even after 1000 cycles, thus indicating that it is a promising anode material for LIBs.