Effects of phosphorus content and operating temperature on the electrochemical performance of phosphorus-doped soft carbons

• 영문명: Effects of phosphorus content and operating temperature on the electrochemical performance of phosphorus-doped soft carbons
• 발행기관: 한국탄소학회
• 저자명: Eun Hee Kim and Yongju Jung
• 간행물 정보: 『Carbon Letters』제15권 제4호, 277~281쪽, 전체 5쪽
• 주제분류: 자연과학 > 자연과학일반
• 파일형태: PDF
• 발행일자: 2014.10.31

영문 초록

A series of high capacity soft carbons with different phosphorus contents were successfully prepared by carbonizing petroleum cokes treated with hypophosphorous acid at 900°C. The effect of phosphorus content on the electrochemical performance of the soft carbons was extensively investigated. The P-doped soft carbons exhibited greatly enhanced discharge capacities and outstanding rate capabilities with increasing phosphorus content. In addition, the influence of temperature on the electrochemical behaviors of the soft carbons was investigated in a wide temperature range of 25°C to 50°C. Surprisingly, the electrochemical properties of the pristine and P-doped soft carbons were highly sensitive to the operating temperature, unlike conventional graphite. The pristine and P-doped soft carbons exhibited significantly high discharge capacities of 470 and 522 mAh/g, respectively, at a high temperature of 50°C.

목차

1. Introduction

2. Experimental

3. Results and Discussion

4. Conclusions

Acknowledgments

References

키워드

soft carbons hypophosphorous acid phosphorus content high temperature