Rational design of 3D N-doped carbon nanosheet framework encapsulated ultrafine ZnO nanocrystals as superior performance anode materials in lithium ion batteries

时间:2019-12-29作者:浏览量:477


Rational design of 3D N-doped carbon nanosheet framework encapsulated ultrafine ZnO nanocrystals as superior performance anode materials in lithium ion batteries


作者:Li, JD (Li, Jianding)[ 1 ] ; Zhao, HJ (Zhao, Huajun)[ 1 ] ; Wang, MM (Wang, Meimei)[ 2 ] ; Zhu, YY (Zhu, Yongyang)[ 3 ] ; Li, B (Li, Bo)[ 1 ] ; Yu, XQ (Yu, Xueqing)[ 1 ] ; Xu, JC (Xu, Jincheng)[ 1 ] ; Cheng, YJ (Cheng, Yajun)[ 2 ] ; Ouyang, LZ (Ouyang, Liuzhang)[ 3 ] ; Shao, HY (Shao, Huaiyu)[ 1 ]


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JOURNAL OF MATERIALS CHEMISTRY A


卷: 7  期: 43  页: 25155-25164

DOI: 10.1039/c9ta08377d


出版年: NOV 21 2019


文献类型:Article


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摘要

Transition metal oxides have been extensively studied as anodes in lithium ion batteries due to their high specific capacity. However, they face some challenges to realize their practical applications owing to their inherent drawbacks of poor electronic conductivity and large volume expansion during charge/discharge. In this work, a facile synthesis of ultrafine ZnO nanocrystals encapsulated in a 3D N-doped carbon nanosheet framework (ZnO-NCNF) is reported to tackle these issues and improve the performance. The ZnO-NCNF-700 composite maintains a reversible capacity of 770 mA h g(-1) at 500 mA g(-1) after 1000 cycles. At 1000 mA g(-1), a capacity of 572 mA h g(-1) is retained after 750 cycles. Even at higher current density of 10 000 mA g(-1), it still possesses a capacity of 148 mA h g(-1). Moreover, it maintains the structural integrity and its ion-diffusion coefficient increases by over three orders of magnitude. Also, the LiNi0.8Co0.1Mn0.1O2 (NCM811)/ZnO-NCNF-700 full cell maintains a capacity of 531 mA h g(-1) after 60 cycles. The superior electrochemical performance might be ascribed to the reduced charge-transfer resistance, boosted Li+ diffusivity, mitigated breakage and structural integrity that originated from the decreased particle size and NCNF architecture. This work provides more insight into the lithium storage of ultrafine ZnO nanocrystals as anode electrode materials, and opens a new and facile strategy for developing a promising ZnO anode material for practical applications in lithium ion batteries.


关键词

KeyWords Plus:ENHANCED ELECTROCHEMICAL PERFORMANCE; ATOMIC LAYER DEPOSITION; HIGH-CAPACITY; FACILE SYNTHESIS; NANOROD ARRAYS; HOLLOW SPHERES; ZINC-OXIDE; GRAPHENE; STORAGE; NANOPARTICLES


作者信息

通讯作者地址: Shao, HY (通讯作者)


显示更多Univ Macau, Joint Key Lab, Minist Educ, IAPME, Macau, Peoples R China.

通讯作者地址: Ouyang, LZ (通讯作者)

显示更多South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China.

地址:


显示更多[ 1 ] Univ Macau, Joint Key Lab, Minist Educ, IAPME, Macau, Peoples R China

显示更多[ 2 ] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, 1219 Zhongguan West Rd, Ningbo 315201, Zhejiang, Peoples R China

显示更多[ 3 ] South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China

电子邮件地址:meouyang@scut.edu.cn; hshao@um.edu.mo


基金资助致谢

基金资助机构授权号

Science and Technology Development Fund, Macau SAR

0062/2018/A2

Multi-Year Research Grant at the University of Macau

MYRG2019-00055-IAPME

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出版商

ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND


期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Chemistry; Energy & Fuels; Materials Science


Web of Science 类别:Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary