集电器
聚酰亚胺
材料科学
铜
内阻
电流密度
重量分析
电极
复合数
锂(药物)
功率密度
复合材料
钛酸锂
箔法
储能
阳极
锂离子电池
图层(电子)
冶金
电池(电)
化学
功率(物理)
物理化学
有机化学
医学
电解质
量子力学
内分泌学
物理
作者
Pan Chen,Shujing Chen,Yuhui Huang,Lei Wang,Jing‐Li Luo,Shuhui Yu
标识
DOI:10.1016/j.jpowsour.2022.231207
摘要
Large inactive component mass ratio and internal resistance are two critical challenges in further realizing high energy and power density lithium-ion batteries. Herein, lightweight copper coated polyimide ([email protected]) current collectors with a high electrical conductivity (2.25 × 105 S cm−1) and low area density (1.99 mg cm−2) are fabricated via a facile electroless copper deposition method. Compared with the commercial Cu foil current collector, lithium titanate anodes equipped with [email protected] current collectors decrease the inactive component mass ratio and improve the gravimetric capacity based on the whole mass of the electrode. Meanwhile, the rough surface morphology of deposited Cu layers reduces the electrode layer/current collector interfacial resistance, resulting in a lower internal resistance and better rate capability. [email protected] composite films are promising alternatives to the traditional copper foil current collectors for high energy density and power density lithium-ion batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI