共 50 条
Green preparation of hierarchical porous C/SiOx composites from coal gangue as anodes for Li-ion batteries
被引:12
|作者:
Zhang, Shuai
[1
]
Zhang, Ning
[1
,2
]
Zhao, Wei
[1
]
Lan, Dawei
[1
]
Hao, Gengyu
[1
]
Yi, Xingyu
[1
]
Yang, Zexu
[1
]
Hu, Jiangliang
[3
]
He, Wenxiu
[1
]
Liu, Yunying
[1
]
Ma, Litong
[1
]
Cui, Jinlong
[1
]
Sun, Juncai
[2
]
机构:
[1] Inner Mongolia Univ Sci & Technol, Inner Mongolia Engn Res Ctr Comprehens Utilizat B, Sch Chem & Chem Engn, Inner Mongolia Key Lab Coal Chem Engn & Comprehen, Baotou 014010, Peoples R China
[2] Dalian Maritime Univ, Inst Mat & Technol, Dalian 116026, Peoples R China
[3] Taiyuan Univ Technol, Key Lab Coal Sci & Technol, Taiyuan 030024, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Coal gangue;
C/SiOx composites;
Li-ion batteries;
Anode;
AT-C;
STORAGE PERFORMANCE;
HIGH-CAPACITY;
LITHIUM;
CARBON;
NANOCOMPOSITE;
SIO2;
MICROSPHERES;
REDUCTION;
HYBRID;
D O I:
10.1016/j.ssi.2021.115772
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
This study proposes a facile, economical, and eco-friendly strategy to prepare high stability and capacity C/SiOx composites with porous reticular cross-linked structures using solid waste coal gangue. The obtained C/SiOx composites exhibit a high reversible capacity of 1175.8 mAh/g at 0.1 A/g, with coulombic efficiency of >99.8%. Likewise, a high capacity of 430 mAh/g retains after 700 cycles at 2.0 A/g demonstrating it has an excellent reversible performance. Taking full advantage of acid soaking waste liquid, hot alkali treatment waste liquid and washing waste liquid of C/SiOx composite materials, a success was achieved in preparing metal hydroxide, low specific surface area SiO2 microspheres and NPK compound fertilizer. Moreover, the target of zero discharge and zero pollution was achieved by the ethanol and distilled water recycle during the new preparation process.
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页数:10
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