普鲁士蓝
阳极
分离器(采油)
成核
材料科学
金属
化学工程
剥离(纤维)
纳米技术
电流密度
电镀(地质)
无机化学
电化学
化学
电极
冶金
复合材料
物理化学
有机化学
工程类
地质学
物理
热力学
量子力学
地球物理学
作者
Mingcong Du,Zehang Peng,Xin Long,Zijun Huang,Zi-Wei Lin,Jianghong Yang,Kui Ding,Luyi Chen,Xu‐Jia Hong,Yue‐Peng Cai,Qifeng Zheng
出处
期刊:Nano Letters
[American Chemical Society]
日期:2022-06-08
卷期号:22 (12): 4861-4869
被引量:16
标识
DOI:10.1021/acs.nanolett.2c01243
摘要
The Li dendrite issue is the major barrier that limits the implement of Li metal anode practically, especially at high current density. From the perspective of the nucleation and growth mechanism of the Li dendrite, we rationally develop a novel Prussian blue analogues (PBA)-derived separator, where tuning the metal ions bestows the PBAs with open metal site to confine anion movement and thereby afford a high Li+ transference number (0.78), and PBA with ordered micropores could act as an ionic sieve to selectively extract Li+ and thereby homogenize Li+ flux. This demonstrates a highly reversible Li plating/stripping cycling for 3000 h at a practically high current density (5.0 mA cm-2). Consequently, a high loading Li||LiFeO4 battery (∼10.0 mg cm-2) demonstrates ultralong cycling life at high current densities (∼5.1 mA cm-2). This work highlights the prospect of optimizing PBAs in regulating ion transport behavior to enable high-power Li metal batteries.
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