[Advanced functional materials] 我室李剑锋教授和郑南峰教授发表论文:Lithiophilic and Antioxidative Copper Current Collectors for Highly Stable Lithium Metal Batteries

发布日期:2021年03月11日   浏览次数:

我室李剑锋教授和郑南峰教授在 Advanced functional materials 上发表论文:Lithiophilic and Antioxidative Copper Current Collectors for Highly Stable Lithium Metal Batteries

摘要:Designing copper (Cu) current collectors is a convenient way to stabilize lithium (Li) metal anodes. However, Cu current collectors and their derived Li/Cu anodes still face several obstacles, including lithiophobic and oxidizable Cu surface, cumbersome anode fabrication process, and low Li utilization. Here, a formate‐treatment strategy is presented to reconstruct Cu current collectors with a passivation layer covered Cu(110) surface. This method can easily be generalized to increase the lithiophilicity and oxidation resistibility of Cu current collectors. Using the formate‐treated Cu nanowire network as an anode current collector, the full cell consisting of a LiFePO4 cathode and Li/Cu anode with a low negative/positive capacity ratio delivers an excellent cycling performance with 74.8% capacity retention after 1000 cycles at 1 C. In addition, a concept of an upper current collector is introduced to simplify the manufacturing procedure of Li/Cu anodes. This work provides new insights into the design and construction of high‐performance Li/Cu anodes.

文章链接:https://onlinelibrary.wiley.com/doi/10.1002/adfm.202009805