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A Highly Reversible Long-Life Li-CO2 Battery with a RuP2 -Based Catalytic Cathode.

A new interesting article has been published in Small. 2018 Oct 21:e1803246. doi: 10.1002/smll.201803246. [Epub ahead of print] and titled:

A Highly Reversible Long-Life Li-CO2 Battery with a RuP2 -Based Catalytic Cathode.

Authors of this article are:

Guo Z, Li J, Qi H, Sun X, Li H, Tamirat AG, Liu J, Wang Y, Wang L.

A summary of the article is shown below:

Rechargeable Li-CO2 batteries have attracted worldwide attention due to the capability of CO2 capture and superhigh energy density. However, they still suffer from poor cycling performance and huge overpotential. Thus, it is essential to explore highly efficient catalysts to improve the electrochemical performance of Li-CO2 batteries. Here, phytic acid (PA)-cross-linked ruthenium complexes and melamine are used as precursors to design and synthesize RuP2 nanoparticles highly dispersed on N, P dual-doped carbon films (RuP2 -NPCFs), and the obtained RuP2 -NPCF is further applied as the catalytic cathode for Li-CO2 batteries. RuP2 nanoparticles that are uniformly deposited on the surface of NPCF show enhanced catalytic activity to decompose Li2 CO3 at low charge overpotential. In addition, the NPCF its with porous structure in RuP2 -NPCF provides superior electrical conductivity, high electrochemical stability, and enough ion/electron and space for the reversible reaction in Li-CO2 batteries. Hence, the RuP2 -NPCF cathode delivers a superior reversible discharge capacity of 11951 mAh g-1 , and achieves excellent cyclability for more than 200 cycles with low overpotentials (<1.3 V) at the fixed capacity of 1000 mAh g-1 . This work paves a new way to design more effective catalysts for Li-CO2 batteries.
Check out the article’s website on Pubmed for more information:

This article is a good source of information and a good way to become familiar with topics such as:

Li2CO3 decomposition;N, P-codoped carbon films;RuP2 nanoparticles;catalytic cathode;rechargeable Li-CO2 batteries


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