Scalable One-Pot Synthesis of Hierarchical Bi@C Bulk with Superior Lithium-Ion Storage Performances
作者:Xu, XJ (Xu, Xijun)[ 1,2 ] ; Wang, ZS (Wang, Zhuosen)[ 1,2 ] ; Zhang, DC (Zhang, Dechao)[ 1,2 ] ; Zuo, SY (Zuo, Shiyong)[ 1,2 ] ; Liu, J (Liu, Jun)[ 1,2 ] ; Zhu, M (Zhu, Min)[ 1,2 ]
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ACS APPLIED MATERIALS & INTERFACES
卷: 12 期: 46 页: 51478-51487
DOI: 10.1021/acsami.0c14757
出版年: NOV 18 2020
文献类型:Article
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摘要
Lithium-ion batteries (LIBs), the most successful commercial energy storage devices, are now widespread in our daily life. However, the lack of appropriate electrode materials with long lifespan and superior rate capability is the urgent bottleneck for the development of high-performance LIBs. Herein, a hierarchical BigC bulk is developed via a scalable pyrolysis method. Due to the ultrafine size of Bi nanoparticles and in situ generated porous carbon framework, this BigC anode evidently facilitates the diffusion of Li+/electron, availably inhibits the agglomeration of active nano-Bi, and effectively mitigates the volume fluctuation. This hierarchical BigC bulk exhibits stable cycling performance for both LIBs (256 mAh g(-1) at 1.0 A g(-1) over 1400 cycles) and potassium-ion batteries (271 mAh g(-1) at 0.1 A g(-1) for 200 cycles). More importantly, when coupled with a commercial LiCoO2 cathode, the assembled LiCoO2//Bi@C cells provide an output voltage of 2.9 V and retain a capacity of 202 mAh g(-1) at 0.15 A g(-1). Moreover, kinetic analysis and in situ X-ray diffraction characterization reveal that the Bi@C anode displays a dominated pseudocapacitance behavior and a typical alloying storage mechanism during the cycling process.
关键词
作者关键词:hierarchical Bi@C bulk; anode; long lifespan; Li-ion batteries; alloying storage mechanism
作者信息
通讯作者地址:
South China University of Technology South China Univ Technol, Sch Chem & Chem Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China.
South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China.
通讯作者地址: Liu, J (通讯作者)
显示更多 South China Univ Technol, Sch Chem & Chem Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China.
通讯作者地址: Liu, J (通讯作者)
显示更多 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China.
地址:
显示更多 [ 1 ] South China Univ Technol, Sch Chem & Chem Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
显示更多 [ 2 ] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
电子邮件地址:msjliu@scut.edu.cn
基金资助致谢
基金资助机构显示详情 授权号
Guangdong Pearl River Talents Plan
2017GC010218
National Natural Science Foundation of China (NSFC)
51771076
NSFC51621001
China Postdoctoral Science Foundation
2020M672622
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出版商
AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Science & Technology - Other Topics; Materials Science
Web of Science 类别:Nanoscience & Nanotechnology; Materials Science, Multidisciplinary