抄録
Li−O2 batteries are a promising electrochemical energy-storage system with a sufficient energy density for all electric vehicles, with a one-charge driving distance comparable to conventional petrol cars. However, the practical implementations of Li−O2 batteries face many scientific and technological challenges. Among these is the development of high-performance cathode materials that can provide high capacity, low charge/discharge overpotentials and stable cycling stability. Here, we report a nanoporous Ni cathode covered by N-doped graphene and self-grown catalyst for rechargeable Li−O2 batteries. The novel hybrid cathode shows relatively low charge/discharge overpotentials, high volumetric capacity and long cycling lifetime, which may pave a new way for practical implementation of economic nanoporous metals as binder-free cathodes for high-performance Li−O2 batteries.
本文言語 | English |
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ページ(範囲) | 176-181 |
ページ数 | 6 |
ジャーナル | ChemNanoMat |
巻 | 2 |
号 | 3 |
DOI | |
出版ステータス | Published - 2016 3月 |
ASJC Scopus subject areas
- 生体材料
- 再生可能エネルギー、持続可能性、環境
- エネルギー工学および電力技術
- 材料化学