三维Ni/NiO@C/GN复合材料的制备及其锂离子电池性能
Preparation and performance of a graphene-(Ni-NiO)-C hybrid as the anode of a lithium-ion battery
摘要
Abstract
A graphene-(Ni-NiO)-C hybrid was prepared by dissolving nickel acetate and glucose in water to form a solution that was mixed with a graphene oxide (GO) aqueous suspension, hydrothermally treated at 180 °C for 24 h, carbonized at 700 °C for 3 h in Ar and calcined at 300 °C for 3 h in air. Results indicated that Ni(OH)2 formed during the hydrothermal treatment was converted to metallic Ni during carbonization, which was partly oxidized to NiO during calcination. When used as the anode material of a lithium-ion battery, it had a high initial capacity of 711.6 mA h g?1, which increased to 772.1 mA h g?1 after 300 cycles. For comparison, the sample without added GO had a much lower initial capacity of 584.7 mA h g?1, which decreased to 148.8 mA h g?1 after 300 cycles. Hybridization of the Ni-NiO nanoparticles with carbon inhibited their aggregation. The GO addition led to the formation of a conducting network, which alleviated the large volume expansion during lithiation, prevented the electrode from cracking dur-ing cycling and increased the surface area for easy access of the electrolyte. These factors jointly contributed to the obvious improve-ment in the electrochemical performance of the graphene-(Ni-NiO)-C anode.关键词
Ni/NiO@C/GN/锂离子电池/石墨烯/电化学性能Key words
Ni/NiO@C/GN/Lithium-ion batteries/Graphene/Electrochemical performance分类
化学化工引用本文复制引用
蒋尚,毛苗苗,庞明俊,杨辉,王润伟,李宁,潘启亮,庞敏,赵建国..三维Ni/NiO@C/GN复合材料的制备及其锂离子电池性能[J].新型炭材料,2023,38(2):356-368,13.基金项目
This work is supported by National Natural Sci-ence Foundation of China (52071192) （52071192）
Basic Re-search Project Fund of Shanxi Province(20210302124491 and 20210302123341) （20210302124491 and 20210302123341）
Basic Re-search Project Fund of Shanxi Datong University(2022K10 and 2022K11) （2022K10 and 2022K11）
Graduate Education Re-form project of Shanxi Datong University (21JG25) （21JG25）
the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(2021L370) （2021L370）
the Graduate Student Education Innova-tion Project of Shanxi Datong University (22CX11 and 22CX20) （22CX11 and 22CX20）
Doctoral Research Fund of Shanxi Datong University (2016-B-14, 2016-B-20, 2019-B-11) （2016-B-14, 2016-B-20, 2019-B-11）
State Key Laboratory of Inorganic Synthesis and Preparation Chemistry, Jilin University (2020-15,2021-16). 基金项目:国家自然科学基金(52071192) （2020-15,2021-16）
山西省基础研究计划(自由探索类)(20210302124491,20210302123341) （自由探索类）
山西大同大学基础科研基金项目(2022K10,2022K11) （2022K10,2022K11）
山西大同大学研究生教育改革项目(21JG25) （21JG25）
山西省高等学校科技创新计划项目(2021L370) （2021L370）
山西大同大学研究生教育创新项目(22CX11,22CX20) （22CX11,22CX20）
山西大同大学博士科研启动基金(2016-B-14,2016-B-20,2019-B-11) （2016-B-14,2016-B-20,2019-B-11）
吉林大学无机合成与制备化学国家重点实验室开放课题(2020-15,2021-16). （2020-15,2021-16）
