High loading cotton cellulose-based aerogel self-standing electrode for Li-S batteries

作     者：Heng Mao Limin Liu Lei Shi HuWu Jinxin Lang Ke Wang Tianxiang Zhu Yiyang Gao Zehui Sun Jing Zhao Guoxin Gao Dongyang Zhang Wei Yan Shujiang Ding 毛恒;刘里民;石磊;吴虎;郎瑾新;王珂;朱天祥;高伊杨;孙泽慧;赵敬;高国新;张东阳;延卫;丁书江

作者机构：Xi’an Key Laboratory of Sustainable Energy Materials ChemistryState Key Laboratory of Electrical Insulation and Power EquipmentDepartment of Applied ChemistrySchool of ScienceXi’an Jiaotong UniversityXi’an 710049China Department of Environmental Science and EngineeringState Key Laboratory of Multiphase Flow in Power EngineeringXi’an Jiaotong UniversityXi’an 710049China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2020年第65卷第10期

页      面：803-811,M0003页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(51773165,51973171) Innovation Capability Support Program of Shaanxi(2018PT-28,2019PT-05) 

主　　题：Cellulose-based graphene aerogel Self-standing electrode High sulfur loading Lithium-sulfur battery Pulse sensing 

摘      要：Lithium-sulfur(Li-S) batteries have attracted considerable attention due to their high energy density(2600 Wh kg-1). However, its commercialization is hindered seriously by the low loading and utilization rate of sulfur cathodes. Herein, we designed the cellulose-based graphene carbon composite aerogel(CCA) self-standing electrode to enhance the performance of Li-S batteries. The CCA contributes to the mass loading and utilization efficiency of sulfur, because of its unique physical structure: low density(0.018 g cm-3), large specific surface area(657.85 m2 g-1), high porosity(96%), and remarkable electrolyte adsorption(42.25 times). Compared to Al(about 49%), the CCA displayed excellent sulfur use efficiency(86%) and could reach to high area capacity of 8.60 mAh cm-2 with 9.11 mgS loading. Meanwhile,the CCA exhibits the excellent potential for pulse sensing applications due to its flexibility and superior sensitivity to electrical response signals.