期刊
MATERIALS LETTERS
卷 313, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2022.131737
关键词
Carbon materials; Porous materials; Surface functionalization; Zinc ion hybrid capacitor
资金
- Scientific Research Startup Funding of Chuzhou University [2020qd51]
- National College Students' innovation and entrepreneurship training program [202110377027]
- Key Laboratory of Metallurgical Emission Reduction & Resources Recycling (Anhui University of Technology), Ministry of Education [JKF21-02]
In this study, an oxygen-rich lotus-shaped porous carbon (OLPC) cathode was synthesized for high performance zinc ion hybrid capacitors (ZHCs) by using phenanthrene as carbon precursor and potassium oxalate activation. The OLPC cathode displayed superior areal capacity, rate capability, energy density, and long-term life.
Herein, the oxygen-rich lotus-shaped porous carbon (OLPC) cathode for high areal performance zinc ion hybrid capacitors (ZHCs) are synthesized by using phenanthrene as carbon precursor coupled with potassium oxalate activation. The OLPC presents high content of oxygen, which improves the surface wettability of OLPC in aqueous electrolyte, Zn-ion chemical adsorption and pseudocapacitive redox active sites. The OLPC cathode displays a superior areal capacity of 1688.5 mF cm(-2) at 0.215 mA cm(-2), superb rate capability of 1370.6 mF cm 2 at 86 mA cm(-2), remarkable areal energy density of 686.6 mWh cm(-2) and long-term life with 1.1% loss after 20,000 cycles. This work provides an effective strategy for improving the ions storage properties by surface functionalization of electrode materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据