DataVXChemNanoMatPaper
journal article·2017-06

Ruthenium‐Functionalized Hierarchical Carbon Nanocages as Efficient Catalysts for Li‐O2 Batteries

Liangjun Wang, Zhiyang Lyu, Lili Gong, Jian Zhang, Qiang Wu, Xizhang Wang, Fengwei Huo, Wei Huang, Zheng Hu, Wei Chen

ChemNanoMat· Volume 3· Issue 6
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Source abstract

Abstract

Abstract Developing an efficient cathode is essential to obtain high rate capability and rechargeable lithium oxygen (Li‐O2) batteries. Herein, ruthenium (Ru)‐functionalized hierarchical carbon nanocages (hCNCs) are synthesized and employed as a cathode catalyst for Li‐O2 batteries. The as‐prepared cathode exhibits high discharge capacity, low charge potential (8135 mA h g−1 with 3.85 V charge potential at a current density of 0.08 mA cm−2), outstanding rate capability (3416 mA h g−1 at a current density of 0.48 mA cm−2) and good stability up to 78 cycles at a limited capacity of 500 mA h g−1. Such excellent battery performance is ascribed to the synergistic effect of the interconnected hierarchically porous structure of hCNCs, which can facilitate effective electrolyte immersion and efficient Li+/O2 mass transport, and the high catalytic activity of Ru nanoparticles.
Source: crossref · Quality: baseline

Research context

Energy storageNanomaterialsCatalysis & surfaces

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics National University of Singapore 2 Science Drive 3 117542 Singapore Singapore

Department of Chemistry National University of Singapore 3 Science Drive 3 117543 Singapore Singapore

Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China

Institute of Advanced Materials Nanjing Tech University 30 South Puzhu Road Nanjing 211816 China

Centre for Advanced 2D Materials and Graphene Research Centre National University of Singapore 6 Science Drive 2 117546 Singapore Singapore

Collaborative Innovation Center for Optoelectronic Science & Technology Shenzhen University Shenzhen 518060 China

National University of Singapore (Suzhou) Research Institute Suzhou 215123 China

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