DataVXACS Energy LettersPaper
journal article·2017-08-11

Phase Transformations in TiS2 during K Intercalation

Bingbing Tian, Wei Tang, Kai Leng, Zhongxin Chen, Sherman Jun Rong Tan, Chengxin Peng, Guo-Hong Ning, Wei Fu, Chenliang Su, Guangyuan Wesley Zheng, Kian Ping Loh

ACS Energy Letters· Volume 2· Issue 8
Publisher page
Source abstract

Abstract

The electrochemical performances of TiS 2 in potassium ion batteries (KIBs) are poor due to the large size of K ions, which induces irreversible structural changes and poor kinetics. To obtain detailed insights into the kinetics of phase changes, we investigated the electrochemical properties, phase transformations, and stability of potassium-intercalated TiS 2 (K x TiS 2, 0 ≤ x ≤ 0.88). In situ XRD reveals staged transitions corresponding to distinct crystalline phases during K ion intercalation, which are distinct from those of Li and Na ions. Electrochemical (cyclic voltammetry and galvanostatic charge/discharge) studies show that the phase transitions among various intercalated stages slow down the kinetics of the discharge/charge in bulk TiS 2 hosts. By chemically prepotassiating the bulk TiS 2 (K 0.25 TiS 2 ) to reduce the domain size of the crystal, these phase transitions are bypassed and more facile ion insertion kinetics can be obtained, which leads to improved Coulombic efficiency, rate capability, and cycling stability.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

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

International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China

Department of Chemistry, Centre for Advanced 2D Materials (CA2DM) and Graphene Research Centre, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore

Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore

Funding

National Research Foundation Singapore · National Natural Science Foundation of China · Guangdong Province · Education Commission of Guangdong Province · Shenzhen Science and Technology Research Foundation

References (30)

Show source-provided references
1. 10.1126/science.192.4244.112610.1126/science.192.4244.1126 ↗
2. 10.1016/j.jpowsour.2003.08.00710.1016/j.jpowsour.2003.08.007 ↗
3. 10.1021/acsami.6b0798910.1021/acsami.6b07989 ↗
4. 10.1039/C6EE03185D10.1039/C6EE03185D ↗
5. 10.1002/aenm.20150187410.1002/aenm.201501874 ↗
6. 10.1016/j.ensm.2015.12.00110.1016/j.ensm.2015.12.001 ↗
7. 10.1016/j.nanoen.2015.10.01510.1016/j.nanoen.2015.10.015 ↗
8. 10.1016/j.elecom.2015.09.00210.1016/j.elecom.2015.09.002 ↗
9. 10.1021/acs.nanolett.5b0366710.1021/acs.nanolett.5b03667 ↗
10. 10.1002/aenm.20170009810.1002/aenm.201700098 ↗
11. 10.1021/jacs.6b1218510.1021/jacs.6b12185 ↗
12. 10.1039/C6CC03649J10.1039/C6CC03649J ↗
13. 10.1002/adfm.20160224810.1002/adfm.201602248 ↗
14. 10.1002/anie.20160719410.1002/anie.201607194 ↗
15. 10.1021/nl203193q10.1021/nl203193q ↗
16. 10.1149/2.0921607jes10.1149/2.0921607jes ↗
17. 10.1021/jacs.5b0680910.1021/jacs.5b06809 ↗
18. 10.1021/acs.nanolett.6b0461110.1021/acs.nanolett.6b04611 ↗
19. 10.1021/jacs.6b1259810.1021/jacs.6b12598 ↗
20. 10.1063/1.43273110.1063/1.432731 ↗
21. 10.1016/0079-6786(78)90003-110.1016/0079-6786(78)90003-1 ↗
22. 10.1149/2.029209jes10.1149/2.029209jes ↗
23. 10.1021/acs.chemmater.5b0211010.1021/acs.chemmater.5b02110 ↗
24. 10.1016/0025-5408(76)90210-510.1016/0025-5408(76)90210-5 ↗
25. 10.1149/1.212935310.1149/1.2129353 ↗
26. 10.1016/0022-3697(84)90107-010.1016/0022-3697(84)90107-0 ↗
27. 10.1149/2.084302jes10.1149/2.084302jes ↗
28. 10.1016/0022-4596(80)90408-910.1016/0022-4596(80)90408-9 ↗
29. 10.1021/acsnano.6b0574610.1021/acsnano.6b05746 ↗
30. 10.1021/ic00206a02610.1021/ic00206a026 ↗