DataVXACS Applied Materials & InterfacesPaper
journal article·2019-02-06

Flexible Sub-Micro Carbon Fiber@CNTs as Anodes for Potassium-Ion Batteries

Chao Shen, Kai Yuan, Te Tian, Maohui Bai, Jian-Gan Wang, Xifei Li, Keyu Xie, Qian-Gang Fu, Bingqing Wei

ACS Applied Materials & Interfaces· Volume 11· Issue 5
Publisher page
Source abstract

Abstract

Potassium-ion batteries (KIBs) with potential cost benefits are a promising alternative to lithium-ion batteries (LIBs). However, because of the large radius of K+, current anode materials usually undergo large volumetric expansion and structural collapse during the charge-discharge process. Self-supporting carbon nanotubes encapsulated in sub-micro carbon fiber (SMCF@CNTs) are utilized as the KIB anode in this study. The SMCF@CNT anode exhibits high specific capacity, good rate performance, and cycling stability. The SMCF@CNT electrode has specific capacities of 236 mAh g-1 at 0.1 C and 108 mAh g-1 at 5 C and maintains over 193 mAh g-1 after 300 cycles at 1 C. Furthermore, a combined capacitive and diffusion-controlled K+ storage mechanism is proposed on the basis of the investigation using in situ Raman and quantitative analyses. By coupling the SMCF@CNT anode with the K0.3MnO2 cathode, a pouch cell with good flexibility delivers a capacity of 74.0 mAh g-1 at 20 mA g-1. This work is expected to promote the application of KIBs in wearable electronics.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

Energy storageNanomaterials

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi’an 710072, China

School of Metallurgy and Environment, Central South University, Changsha 410083, P. R. China

Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, China

Department of Mechanical Engineering, University of Delaware, Newark, Delaware 19716, United States

Funding

Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Natural Science Foundation of Shaanxi Province · Shaanxi Province

References (44)

Show source-provided references
1. 10.1002/aenm.20160288810.1002/aenm.201602888 ↗
2. 10.1016/j.powtec.2017.09.00510.1016/j.powtec.2017.09.005 ↗
3. 10.1021/acs.nanolett.8b0018310.1021/acs.nanolett.8b00183 ↗
4. 10.1038/451652a10.1038/451652a ↗
5. 10.1039/C8TA00990B10.1039/C8TA00990B ↗
6. 10.1021/acssuschemeng.7b0451610.1021/acssuschemeng.7b04516 ↗
7. 10.1002/smll.20170147110.1002/smll.201701471 ↗
8. 10.1016/0167-2738(88)90351-710.1016/0167-2738(88)90351-7 ↗
9. 10.1021/acs.nanolett.5b0366710.1021/acs.nanolett.5b03667 ↗
10. 10.1021/jacs.5b0680910.1021/jacs.5b06809 ↗
11. 10.1016/j.elecom.2015.09.00210.1016/j.elecom.2015.09.002 ↗
12. 10.1002/aenm.20170164810.1002/aenm.201701648 ↗
13. 10.1039/C7TA02454A10.1039/C7TA02454A ↗
14. 10.1038/nmat360110.1038/nmat3601 ↗
15. 10.1038/ncomms1212210.1038/ncomms12122 ↗
16. 10.1002/adma.20170544110.1002/adma.201705441 ↗
17. 10.1021/jp074464w10.1021/jp074464w ↗
18. 10.1002/anie.20070250510.1002/anie.200702505 ↗
19. 10.1002/adma.20180121310.1002/adma.201801213 ↗
20. 10.1039/c3ta00793f10.1039/c3ta00793f ↗
21. 10.1039/C7TA04264G10.1039/C7TA04264G ↗
22. 10.1002/aenm.20180056410.1002/aenm.201800564 ↗
23. 10.1021/acsnano.6b0599810.1021/acsnano.6b05998 ↗
24. 10.1021/acsami.7b0247610.1021/acsami.7b02476 ↗
25. 10.1016/j.ensm.2017.05.01010.1016/j.ensm.2017.05.010 ↗
26. 10.1021/acsami.6b0476310.1021/acsami.6b04763 ↗
27. 10.1038/s41467-018-04190-z10.1038/s41467-018-04190-z ↗
28. 10.1039/C7TA00445A10.1039/C7TA00445A ↗
29. 10.1021/acsnano.6b0231910.1021/acsnano.6b02319 ↗
30. 10.1016/0008-6223(79)90067-810.1016/0008-6223(79)90067-8 ↗
31. 10.1063/1.12291110.1063/1.122911 ↗
32. 10.1016/j.carbon.2007.03.03810.1016/j.carbon.2007.03.038 ↗
33. 10.1021/nl071033g10.1021/nl071033g ↗
34. 10.1021/nl200905810.1021/nl2009058 ↗
35. 10.1016/j.nanoen.2015.04.00710.1016/j.nanoen.2015.04.007 ↗
36. 10.1002/adma.20130044510.1002/adma.201300445 ↗
37. 10.1002/aenm.20160065910.1002/aenm.201600659 ↗
38. 10.1002/adfm.20170032410.1002/adfm.201700324 ↗
39. 10.1002/aenm.20180017110.1002/aenm.201800171 ↗
40. 10.1021/acsami.6b0676710.1021/acsami.6b06767 ↗
41. 10.1002/aenm.20150187410.1002/aenm.201501874 ↗
42. 10.1002/adfm.20170629410.1002/adfm.201706294 ↗
43. 10.1002/aenm.20150193710.1002/aenm.201501937 ↗
44. 10.1149/2.0921607jes10.1149/2.0921607jes ↗