Affiliation:
1. Research & Development Institute of Northwestern Polytechnical University in Shenzhen and Shaanxi Institute of Flexible Electronics Northwestern Polytechnical University 127 West Youyi Road Xi'an 710072 China
2. Strait Laboratory of Flexible Electronics (SLoFE) Strait Institute of Flexible Electronics (SIFE Future Technologies) Fujian Normal University Fuzhou 350117 China
Abstract
AbstractHosts hold great prospects for addressing the dendrite growth and volume expansion of the Li metal anode, but Li dendrites are still observable under the conditions of high deposition capacity and/or high current density. Herein, a nitrogen‐doped graphene mesh (NGM) is developed, which possesses a conductive and lithiophilic scaffold for efficient Li deposition. The abundant nanopores in NGM can not only provide sufficient room for Li deposition, but also speed up Li ion transport to achieve a high‐rate capability. Moreover, the evenly distributed N dopants on the NGM can guide the uniform nucleation of Li so that to inhibit dendrite growth. As a result, the composite NGM@Li anode shows satisfactory electrochemical performances for Li–S batteries, including a high capacity of 600 mAh g−1 after 300 cycles at 1 C and a rate capacity of 438 mAh g−1 at 3 C. This work provides a new avenue for the fabrication of graphene‐based hosts with large areal capacity and high‐rate capability for Li metal batteries.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
Natural Science Basic Research Program of Shaanxi Province
Natural Science Foundation of Ningbo Municipality
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
1 articles.
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