دورية أكاديمية
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A freestanding nitrogen-doped MXene/graphene cathode for high-performance Li-S batteries.

التفاصيل البيبلوغرافية
العنوان: A freestanding nitrogen-doped MXene/graphene cathode for high-performance Li-S batteries.
المؤلفون: Yuanzheng L; School of Electronic Information Engineering, Guangdong Ocean University China lishufa@gdou.edu.cn., Zhicheng Y; School of Electronic Information Engineering, Guangdong Ocean University China lishufa@gdou.edu.cn., Lianghao M; School of Electronic Information Engineering, Guangdong Ocean University China lishufa@gdou.edu.cn., Buyin L; School of Optical and Electronic Information, Huazhong University of Science and Technology China., Shufa L; School of Electronic Information Engineering, Guangdong Ocean University China lishufa@gdou.edu.cn.
المصدر: Nanoscale advances [Nanoscale Adv] 2022 Apr 06; Vol. 4 (9), pp. 2189-2195. Date of Electronic Publication: 2022 Apr 06 (Print Publication: 2022).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 101738708 Publication Model: eCollection Cited Medium: Internet ISSN: 2516-0230 (Electronic) Linking ISSN: 25160230 NLM ISO Abbreviation: Nanoscale Adv Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Cambridge : Royal Society of Chemistry, [2019]-
مستخلص: Lithium-sulfur batteries (LSBs) take a leading stand in developing next-generation secondary batteries with an exceptionally high theoretical energy density. However, the insulating nature and undesirable shuttle effect still need to be solved to improve the electrochemical performance. Herein, a freestanding graphene supported N-doped Ti 3 C 2 T x MXene@S cathode is successfully synthesized via a straightforward no-slurry method. Due to its unique hierarchical microstructure, the MXene-C/S ternary hybrids with high capacity can effectively adsorb polysulfides and accelerate their conversion. Cooperatively, conductive rGO can ameliorate N-MXene nanosheet' restacking, making the lamellar N-Mxene coated sulfur particles disperse uniformly. The assembled Li-S battery with a freestanding Ti 3 C 2 T x @S/graphene electrode provides an initial capacity of 1342.6 mA h g -1 at 0.1C and only experiences a low capacity decay rate of 0.067% per cycle after. Even at a relatively high loading amount of 5 mg cm -2 , the battery can still yield a high specific capacity of 684.9 mA h g -1 at 0.2C, and a capacity retention of 89.3% after 200 cycles.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
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تواريخ الأحداث: Date Created: 20220922 Latest Revision: 20240903
رمز التحديث: 20240903
مُعرف محوري في PubMed: PMC9419821
DOI: 10.1039/d2na00072e
PMID: 36133453
قاعدة البيانات: MEDLINE
الوصف
تدمد:2516-0230
DOI:10.1039/d2na00072e