文献类型：期刊文献

英文题名：Arrayed silk fibroin for high-performance Li metal batteries and atomic interface structure revealed by cryo-TEM

作者：Zhang, Baolin[1];Shi, Haodong[2,3];Ju, Zhijin[1];Huang, Kai[4];Lian, Cheng[4];Wang, Yao[1];Sheng, Ouwei[1];Zheng, Jianhui[1];Nai, Jianwei[1];Liu, Tiefeng[1];Jin, Yang[5];Liu, Yujing[1];Zhang, Chuanfang (John)[6];Tao, Xinyong[1]

机构：[1]Zhejiang Univ Technol, Coll Mat Sci & Engn, Hangzhou 310014, Peoples R China;[2]Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China;[3]Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China;[4]East China Univ Sci & Technol, Frontiers Sci Ctr Mat & Dynam Chem, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Chem & Mol Engn,State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[5]Zhengzhou Univ, Sch Elect Engn, Zhengzhou 450001, Peoples R China;[6]Swiss Fed Labs Mat Sci & Technol Empa, ETHDomain, Uberlandstr 129, CH-8600 Dubendorf, Switzerland

年份：2020

卷号：8

期号：48

起止页码：26045

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20205309698468);WOS:【SCI-EXPANDED(收录号:WOS:000601282900045)】；

基金：The authors acknowledge financial support from the National Natural Science Foundation of China (Grant no. 51722210, 51972285, U1802254, and 21902144), the Natural Science Foundation of Zhejiang Province (Grant no. LY17E020010, LD18E020003 and LQ20E030012), the Innovation Fund of the Zhejiang Kechuang New Materials Research Institute (Grant no. ZKN-18-P05), and the Xinmiao Talents Program of Zhejiang Province (Grant no. 2019R403053). The work was carried out at the Lv Liang Cloud Computing Center of China, and the calculations were performed on TianHe-2.

语种：英文

外文关键词：High resolution transmission electron microscopy - Lithium - Solid electrolytes - Solid-State Batteries - Seebeck effect - Lithium batteries

摘要：Lithium (Li) metal anode has been extensively studied due to its ultrahigh theoretical capacity and lightweight nature. However, the inherent uncontrolled growth of Li dendrites evokes serious safety issues and leads to compromised electrochemical reversibility. Here, we report an upright silk fibroin/Li foil (SF-Li) alternant array as the anode for Li metal batteries. The arrayed structure reduces the local current density so that the fast dendrite growth is suppressed while the three-dimensional porous SF effectively accommodates the volume expansion of the anode during cycling. More importantly, SF with rich polar groups participates in the formation of the solid electrolyte interphase (SEI) as the lithiophilic phase and regulates the SEI structure. In particular, the SEI on the Li grown between upright SF and Li foil shows an unexpected robust layered structure (as revealed by cryogenic transmission electron microscopy), which is rarely seen among the SEIs formed in ether-based electrolytes at room temperature. The low-impedance, mechanically stable SEI together with the architectural design of the SF-Li anode guarantee a superior cycling lifespan over 3800 h at 1 mA cm(-2) with a capacity of 5 mA h cm(-2) in symmetric cells. As such, we suggest a structured-biomass strategy towards smooth Li metal anodes, as well as regulating the nanostructures of SEI atomically.