Hierarchical porous stratified texture and enhanced lithium-ion storage performance of Co3O4 modified by nitrogen-doped reduced graphene oxides
Hierarchical porous stratified texture and enhanced lithium-ion storage performance of Co3O4 modified by nitrogen-doped reduced graphene oxides
复制标题
氮掺杂还原氧化石墨烯改性Co3O4的分级多孔分层织构及增强的锂离子存储性能
DOI：
10.1016/j.jallcom.2018.09.352
复制
发表时间：
2019-02
影响因子：
6.2
通讯作者：
Pu Yongping
中科院分区：
文献类型：
--
作者：
Jing Panpan;Wang Peifeng;Liu Mengting;Gao Wensheng;Cui Yongfei;Wang Zhuo;Pu Yongping
选择、设计和制备替代电极材料是锂离子电池在可持续储能领域的迫切需求。在此，通过一种可重复的、大规模生产的方法成功合成了一种新型的、分散性良好的、由氮掺杂的还原氧化石墨烯（N-rGO/Co 3 O 4）修饰的Co 3 O 4分级多孔层状织构。N-rGO/Co 3 O 4微板由少量多孔纳米薄片分级自组装而成，N-rGO均匀地渗入Co 3 O 4基体中.作为LIB的阳极材料，N-rGO/Co 3 O 4微孔板在1 A g− 1下的初始放电容量高达1890 mAh·g− 1，库仑效率高达77.6%。在1000次充放电循环中，电池容量和库仑效率分别保持在1000 mAh·g-1和99.6%。即使电流密度增加到2 A g−1，电极在500次循环中仍能提供770 mAh·g− 1的稳定容量。此外，速率性能非常上级。N-rGO/Co_3O_4微板的这种先进的锂离子储存主要是由于少量N-rGO的改性在不牺牲Co_3O_4容量的情况下提高了电导率和分级多孔层状织构。因此，分级多孔N-rGO/Co 3 O 4微孔板和合成策略可以在不久的将来应用于下一代LIB。
Choosing, designing and preparing the alternative electrode materials are of highly urgent for lithium-ion batteries (LIBs) in sustainable energy storage fields. Herein, a novel and well-dispersive hierarchical porous stratified texture of Co3O4modified by nitrogen-doped reduced graphene oxides (N-rGO/Co3O4) microplates are successfully synthesized via a reproducible and mass-produced route. The N-rGO/Co3O4microplates are hierarchically self-assembled by a few porous thin nanoflakes and the N-rGO is uniformly permeated into Co3O4matrix. As an anode material for LIBs, the N-rGO/Co3O4microplates deliver a high initial discharge capacity of 1890 mAh·g−1at 1 A g−1with a Coulombic efficiency as high as 77.6%. During the 1000 charging-discharging cycles, the capacities and Coulombic efficiencies maintain at 1000 mAh·g−1and 99.6%. Even the current density is increased to 2 A g−1, the electrode still delivers a stable capacity of 770 mAh·g−1for 500 cycles. Moreover, the rate performance is highly superior. Such an advanced Li ions storage of the N-rGO/Co3O4microplates is mainly due to the modification of small quantity N-rGO improving the electric conductivity without sacrificing the capacity of Co3O4and the hierarchical porous stratified texture. Hence, the hierarchical porous N-rGO/Co3O4microplates and synthetic strategy can be applied for next-generation LIBs in the near future.
登录
查看更多内容
DOI：
10.1002/advs.201700592
发表时间：
2018-03
期刊：
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子：
--
作者：
Zheng M;Tang H;Li L;Hu Q;Zhang L;Xue H;Pang H
通讯作者：
Pang H
影响因子：
17.6
作者：
Xinghui Wang;Yu Fan;R. Susantyoko;Q. Xiao;Leimeng Sun;D. He;Qing Zhang
通讯作者：
Xinghui Wang;Yu Fan;R. Susantyoko;Q. Xiao;Leimeng Sun;D. He;Qing Zhang
用于先进LIB的N掺杂非晶碳壳修饰的Co3O4微球的快速活化和增强的循环稳定性
影响因子：
6.6
作者：
Liu, Mengting;Hou, Xiaoyi;Li, Junshuai
通讯作者：
Li, Junshuai
影响因子：
6.6
作者：
Xiaoyong Fan;Yong Shi;Lei Gou;Donglin Li
通讯作者：
Xiaoyong Fan;Yong Shi;Lei Gou;Donglin Li
影响因子：
6.6
作者：
Dongming Yin;Gang Huang;Q. Sun;Qian Li;Xuxu Wang;Dong-Feng Yuan;Chunli Wang;Limin Wang
通讯作者：
Dongming Yin;Gang Huang;Q. Sun;Qian Li;Xuxu Wang;Dong-Feng Yuan;Chunli Wang;Limin Wang