| Bismuth nanospheres embedded in three-dimensional (3d) porous graphene frameworks as high performance anodes for sodium- and potassium-ion batteries | |
| Cheng, Xiaolong1; Li, Dongjun1; Wu, Ying1; Xu, Rui1; Yu, Yan1,2,3 | |
| 刊名 | Journal of materials chemistry a
 |
| 2019-03-07 | |
| 卷号 | 7期号:9页码:4913-4921 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta11947c |
| 通讯作者 | Yu, yan(yanyumse@ustc.edu.cn) |
| 英文摘要 | Bismuth (bi) has been demonstrated as a promising anode material for both na-ion batteries (nibs) and k-ion batteries (kibs) due to its high theoretical capacity (385ma h g(-1) for nibs and kibs). however, bi undergoes a huge volume change during charge-discharge processes, leading to severe pulverization of bi particles and structural degradation. herein, a robust composite possessing a three-dimensional (3d) structure with bi nanoparticles embedded in 3d macroporous graphene frameworks (bi@3dgfs) is designed to address these issues. this 3d porous bi@3dgf composite demonstrates high capacity and stable long-term cycling performance at various current densities for both nibs and kibs. as an anode for nibs, it shows a reversible capacity of 180 ma h g(-1) at a current density as high as 50 a g(-1). the rate capability for kibs is also unprecedented; it delivers a reversible capacity of 185.2 ma h g(-1) after 2000 cycles at a current density of 10 a g(-1). the excellent electrochemical performance of the bi@3dgfs is ascribed to the unique structure. the 3d interconnecting pores facilitate the penetration of the electrolyte, leading to direct contact between electrochemically active bi and the electrolyte, enhancing charge transfer kinetics. |
| WOS关键词 | LITHIUM-ION ; CARBON NANOFIBERS ; RECENT PROGRESS ; STABLE ANODE ; NANOPARTICLES |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| WOS类目 | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000460687400064 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2372712 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Yu, Yan |
| 作者单位 | 1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Key Lab Mat Energy Convers, Dept Mat Sci & Engn,CAS, Hefei 230026, Anhui, Peoples R China 2.Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Dalian Natl Lab Clean Energy DNL, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Xiaolong,Li, Dongjun,Wu, Ying,et al. Bismuth nanospheres embedded in three-dimensional (3d) porous graphene frameworks as high performance anodes for sodium- and potassium-ion batteries[J]. Journal of materials chemistry a,2019,7(9):4913-4921. |
| APA | Cheng, Xiaolong,Li, Dongjun,Wu, Ying,Xu, Rui,&Yu, Yan.(2019).Bismuth nanospheres embedded in three-dimensional (3d) porous graphene frameworks as high performance anodes for sodium- and potassium-ion batteries.Journal of materials chemistry a,7(9),4913-4921. |
| MLA | Cheng, Xiaolong,et al."Bismuth nanospheres embedded in three-dimensional (3d) porous graphene frameworks as high performance anodes for sodium- and potassium-ion batteries".Journal of materials chemistry a 7.9(2019):4913-4921. |
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