Rolling press of lithium with carbon for high-performance anodes
Rolling press of lithium with carbon for high-performance anodes
复制标题
用于高性能负极的锂碳辊压机
DOI：
10.1016/j.ensm.2019.07.044
复制
发表时间：
2020
影响因子：
20.4
通讯作者：
Yanwu Zhu
中科院分区：
文献类型：
--
作者：
Na Shu;Jian Xie;Xinyuan Wang;Xiaodong He;Lina Xiao;Fei Pan;Hong Yuan;Jianglin Ye;Chunhua Chen;Yanwu Zhu
迄今为止报道的许多锂（Li）金属阳极都是通过在集流体上电沉积Li来制备的，在实际应用中需要牺牲电池。在这项工作中，锂箔压缩与各种碳，如还原氧化石墨（rGO），活化的微波膨化GO（aMEGO）和活性炭（AC），通过辊压，产生C/锂复合材料的锂金属阳极。电化学评价表明，所有三种复合阳极在10 mA cm-2的电流密度下可循环1500 h，容量为10 mA h cm-2。具体而言，rGO/Li阳极显示出比其他两种阳极相对较低的过电位和更稳定的循环性能。表征表明，rGO粉末的高孔体积和中等孔径有利于Li迁移和在Li镀/剥离期间对体积变化的耐受性，表明在循环中更稳定的电极-电解质界面。该研究为高性能锂金属阳极的生产提供了一种潜在的可扩展和具有成本效益的策略。
Many lithium (Li) metal anodes reported so far have been prepared by electrodeposition of Li on current collectors, for which sacrificing cells are needed in the practical applications. In this work, Li foils are compressed with various carbons such as reduced graphite oxide (rGO), activated microwave exfoliated GO (aMEGO) and activated carbon (AC) by rolling press, resulting in C/Li composites for Li metal anodes. The electrochemical evaluations show that all the three composite anodes are cyclable for 1500 h at a current density of 10 mA cm−2for a capacity of 10 mA h cm−2. Specifically, the rGO/Li anode shows relatively lower overpotentials and more stable cycling performance than the other two. Characterizations indicate that the high pore volume and the moderate pore size of the rGO powder benefit the Li migration and the tolerance to volume change during Li plating/stripping, demonstrating a more stable electrode-electrolyte interface in the cycling. The study provides a potentially scalable and cost-effective strategy for the production of high-performance Li metal anodes.
登录
查看更多内容
由固体电解质层保护的锂基复合阳极，用于稳定的锂金属电池
影响因子：
13.1
作者：
Shen Xin;Cheng Xinbing;Shi Peng;Huang Jiaqi;Zhang Xueqiang;Yan Chong;Li Tao;Zhang Qiang
通讯作者：
Zhang Qiang
影响因子：
16.6
作者：
Li, Weiyang;Yao, Hongbin;Cui, Yi
通讯作者：
Cui, Yi
影响因子：
27.8
作者：
Huan Ye;Sen Xin;Ya‐Xia Yin;Yu‐Guo Guo
通讯作者：
Huan Ye;Sen Xin;Ya‐Xia Yin;Yu‐Guo Guo
影响因子：
3.9
作者：
Xianjun Zhu;L. Zuo;Shuilin Wu;X. Qu;M. Wei;L. He;Y. Zhong;Yanwu Zhu
通讯作者：
Xianjun Zhu;L. Zuo;Shuilin Wu;X. Qu;M. Wei;L. He;Y. Zhong;Yanwu Zhu
DOI：
10.1073/pnas.1518188113
发表时间：
2016-03-15
影响因子：
11.1
作者：
Liang, Zheng;Lin, Dingchang;Cui, Yi
通讯作者：
Cui, Yi