期刊
ACS NANO
卷 14, 期 2, 页码 1837-1845出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b07706
关键词
basal suit; graphite; hybrid; scalable; Li batteries
类别
资金
- National Nature Science Foundation of China [51872157]
- Shenzhen Technical Plan Project [KQJSCX20160226191136, JCYJ20170412170911187, JCYJ20170817161753629]
- Shenzhen Key Laboratory on Power Battery Safety Research [ZDSYS201707271615073]
- Guangdong Technical Plan Project [2017B090907005]
- Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BTO1N111]
- Special Fund Project for Strategic Emerging Industry Development of Shenzhen [20170428145209110]
Lithium (Li) metal anode has attracted tremendous attention for its highest capacity (3860 mAh g(-1)). Herein, we report that the formation of dead Li can be effectively suppressed through Li plating on porous lithiated graphite lamina (PLGL). A lithiophilic carbon layer was decorated on the lithiophobic basal plane of porous graphite lamina (PGL) with an industry-scalable slurry-coating strategy. Moreover, the higher delithiation potential of PLGL will ensure the complete stripping of the plated Li before its delithiation, thus dramatically enhancing the average Coulombic efficiency (ACE) of Li plating/stripping to 98.5% at a high Li plating/stripping capacity of 2 mAh cm(-2) (similar to 1100 mAh g(-1)) at 2 mA cm(-2). Even at an ultrahigh current density of 4 mA cm(-2) (with Li capacity of 4 mAh cm(-2) (similar to 1900 mAh g(-1))), the ACE could still be maintained at 96.2% in an ordinary carbonate electrolyte.
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