Open AccessSowing Silver Seeds within Patterned Ditches for Dendrite‐Free Lithium Metal Batteries
Author(s) -
Wang Hua,
Hu Pei,
Liu Xueting,
Shen Yue,
Yuan Lixia,
Li Zhen,
Huang Yunhui
Publication year - 2021
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202100684
Subject(s) - materials science , anode , nucleation , cathode , lithium (medication) , overpotential , chemical engineering , nanotechnology , lithium metal , stripping (fiber) , composite material , electrode , electrochemistry , chemistry , medicine , organic chemistry , engineering , endocrinology
The interfacial instability of lithium (Li) metal is one of the critical challenges, which hinders the application of rechargeable Li metal batteries (LMBs). Designing facile and effective surface/interface is extremely important for practical LMBs manufacturing. Here, a highly stable Li anode with silver nanowires sowed in the patterned ditches via a simple calendaring process is developed. The remarkably increased electroactive surface area and the superior lithiophilic Ag seeds enable Li stripping/plating mainly inside the ditches. Benefitting from such unique structural design, the ditches‐patterned and Ag‐modified composite Li anode (D‐Ag@Li) achieves excellent cyclability under 2 mA cm −2 / 4 mAh cm −2 over 360 h cycling with low nucleation overpotential of 16 mV. Pairing with the D‐Ag@Li anode, the full cells with LiNi 0.8 Mn 0.1 Co 0.1 O 2 and LiFePO 4 (LFP) cathodes achieve long cycle life with 94.2% retention after 2000 cycles and 74.2% after 4000 cycles, respectively. Moreover, ultrasonic transmission mapping shows no gas generation for the LFP pouch full cell pouch cell based on D‐Ag@Li over prolonged cycling, demonstrating the feasibility and effectiveness of the authors' strategy for LMBs.