- Title
- Intimately-coordinated carbon nitride-metal sulfide with high p-d conjugation for efficient battery performance
- Creator
- Lee, Jang Mee; Selvarajan, Premkumar; Kim, Sungho; Singh, Gurwinder; Joseph, Stalin; Yang, Jae-Hun; Yi, Jiabao; Vinu, Ajayan
- Relation
- Nano Energy Vol. 90, no. 106602
- Publisher Link
- http://dx.doi.org/10.1016/j.nanoen.2021.106602
- Publisher
- Elsevier BV
- Resource Type
- journal article
- Date
- 2021
- Description
- In this investigation, a hybrid of metal sulfide and carbon nitride (CN) is synthesized by in-situ chemical conversion between metallic species and a single precursor of carbon, nitrogen and sulfur elements through a strong p-d conjugation approach. It is observed that the local chemical alteration in the vicinity of N atom in the CN template triggers the formation of a highly p-conjugated CN system and efficient p-d hybridization at heterointerface. This is accelerated by partial substitution of the Fe atom for Mn ions in the MnS phase which significantly enhances the battery performance, delivering 2031 mA h g-1 after 500 cycles with inverse capacity growth. Via systematic in-depth characterizations, it is found that the gradual increase of Li-ion diffusion coefficients and charge transfer kinetics for repeated cycling is ascribed to the highly dispersed and uniform particles that are confined within the CN template through a strong p-d hybridization.
- Subject
- carbon nitrideLithium ion battery; metal sulfide; π-d hybridization; inverse capacity growth; lithium ion battery; SDG 7; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1470380
- Identifier
- uon:48452
- Identifier
- ISSN:2211-2855
- Language
- eng
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