•  
  •  
 
Nano Research

Article Title

Understanding of the capacity contribution of carbon in phosphorus-carbon composites for high-performance anodes in lithium ion batteries

Authors

Jiantie Xu, Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW 2522, Australia Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
In-Yup Jeon, School of Energy and Chemical Engineering/Low-Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 689-897, Republic of Korea
Jianmin Ma, Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW 2522, Australia
Yuhai Dou, Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW 2522, Australia
Seok-Jin Kim, School of Energy and Chemical Engineering/Low-Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 689-897, Republic of Korea
Jeong-Min Seo, School of Energy and Chemical Engineering/Low-Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 689-897, Republic of Korea
Huakun Liu, Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW 2522, Australia
Shixue Dou, Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW 2522, Australia
Jong-Beom Baek, School of Energy and Chemical Engineering/Low-Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 689-897, Republic of Korea
Liming Dai, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, USA

Keywords

phosphorus, carbon, synergistic effect, anode, lithium ion batteries

Abstract

ABSTRACT Phosphorus has recently received extensive attention as a promising anode for lithium ion batteries (LIBs) due to its high theoretical capacity of 2,596 mAh·g–1. To develop high-performance phosphorus anodes for LIBs, carbon materials have been hybridized with phosphorus (P-C) to improve dispersion and conductivity. However, the specific capacity, rate capability, and cycling stability of P-C anodes are still less than satisfactory for practical applications. Furthermore, the exact effects of the carbon support on the electrochemical performance of the P-C anodes are not fully understood. Herein, a series of xP-yC anode materials for LIBs were prepared by a simple and efficient ball-milling method. 6P-4C and 3P-7C were found to be optimum mass ratios of x/y, and delivered initial discharge capacities of 1,803.5 and 1,585.3·mAh·g–1, respectively, at 0.1 C in the voltage range 0.02–2 V, with an initial capacity retention of 68.3% over 200 cycles (more than 4 months cycling life) and 40.8% over 450 cycles. The excellent electrochemical performance of the 6P-4C and 3P-7C samples was attributed to a synergistic effect from both the adsorbed P and carbon.

Graphical Abstract

Publisher

Tsinghua University Press

Share

COinS