Details

Autor(en) / Beteiligte

• Yang, Yang
• Cao, Jiaqi
• Li, Wangyang
• Zhang, Qiaoli
• Xie, Yonghui
• Lai, Yunda
• Cheng, Shuying
• Qu, Baihua
• Peng, Dong-Liang
• Wang, Xinghui

Titel

Ultrahigh-capacity and dendrite-free lithium metal anodes enabled by lithiophilic bimetallic oxides

Ist Teil von

• Journal of materials chemistry. A, Materials for energy and sustainability, 2022-11, Vol.1 (44), p.23896-2394

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The commercialization of lithium (Li) metal anodes is greatly hindered by dendritic Li growth, infinite volume change, "dead Li", and a fragile solid electrolyte interphase. A series of bimetallic oxides, including ZnMn 2 O 4 , ZnCo 2 O 4 , and NiCo 2 O 4 are developed as a new class of lithiophilic materials for stable Li metal anodes. Benefitting from the synergistic effect of different metal cations, the bimetallic oxide modified carbon cloths demonstrate impressive capabilities in suppressing dendritic Li growth at high areal capacities up to 20 mA h cm −2 . Compared with the monometallic oxide modified hosts, ZnMn 2 O 4 @CC exhibits a much longer lifespan up to 1900 h at a high current density/areal capacity of 10 mA cm −2 /10 mA h cm −2 . When paired with LiFePO 4 , the full cell could maintain a capacity retention capability of 89.4% after 350 cycles at 2 C. The bimetallic oxide-based lithiophilic materials can not only boost practical Li metal batteries, but also shed light on other lithiophilic classes such as bimetallic sulfides/selenides. A new class of lithiophilic materials, bimetallic oxides, have been developed for stable lithium metal anodes, and the obtained Li-ZnMn 2 O 4 @CC exhibits stable stripping/plating behavior at a high areal capacity up to 20 mA h cm −2 .