DataVXACS Applied Materials & InterfacesPaper
journal article·2016-11-30

Carbon-Coated Na3V2(PO4)3 Anchored on Freestanding Graphite Foam for High-Performance Sodium-Ion Cathodes

Xiongwu Zhong, Zhenzhong Yang, Yu Jiang, Weihan Li, Lin Gu, Yan Yu

ACS Applied Materials & Interfaces· Volume 8· Issue 47
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Source abstract

Abstract

Na 3 V 2 (PO 4 ) 3 (NVP) has been considered as a most promising cathode material for sodium-ion batteries (SIBs), but NVP usually exhibits poor cycling stability and rate performance due to the low intrinsic electrical conductivity. Herein, we prepared carbon-coated Na 3 V 2 (PO 4 ) 3 anchored on freestanding graphite foam (denoted as NVP@C-GF) as a cathode for SIBs. The NVP@C-GF exhibits superior sodium-ion storage performance, including rate capability (56 mAh g –1 at 200 C) and long cycle life (54 mAh g –1 at 100 C after 20 000 cycles). The resulting NVP@C-GF inherits the advantages of 3D free-standing graphite that possesses high electrical conductivity and porous structure for the electrolyte to soak in. Furthermore, carbon-coated NVP particles anchored on the surface of GF not only accommodate the volume change of NVP during charge/discharge but also reduce the diffusion distance of the Na + ion.
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Research context

Energy storage

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

Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences (CAS), Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China

Beijing Laboratory for Electron Microscopy, Institute of Physics, Chinese Academy of Sciences (CAS), Beijing, 100190, China

Collaborative Innovation Center of Quantum Matter, Beijing 100190, China

Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China

State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China

Funding

Ministry of Education of the People's Republic of China · National Natural Science Foundation of China · Collaborative Innovation Center of Suzhou Nano Science and Technology

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