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Zou R, Zhang J, Zheng Y, Li J, Liu W, Ran F. Tailoring Interfacial Electric Field by Gold Nanoparticles Enable Electrocatalytic Lithium Polysulfides Conversion for Lithium-Sulfur Batteries. Small 2024:e2312102. [PMID: 38415950 DOI: 10.1002/smll.202312102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/04/2024] [Indexed: 02/29/2024]
Abstract
Although lithium-sulfur batteries (LSBs) are considered as the promising next rechargeable storage system ascribing to their decent specific capacity of inorganic sulfur, the development is partially impeded by inferior electronic conductivity, severe shuttle effect, and large volume variation. To tackle the issues above, a great deal of effort is made on sulfur-containing polymer (SCP) that shows better electrochemical performance. Nevertheless, sluggish conversion of lithium polysulfides (LiPSs) obstructs battery performance yet. Herein, electrocatalytic LiPSs with full conversion by tailoring the interfacial electric field are discovered based on gold nanoparticles (AuNPs) anchored on sulfurized polyaniline (SPANI). A downhill path of Gibbs free energy from organosulfur polymer to intermediate product means more spontaneously and favorable for full conversion, as the significant enhancement of electron density of state in the vicinity of the HOMO level for the AuNPs increase the electron transition probability rate. This composite delivers satisfactory electrochemical performance, especially increased rate capacity of >300 mAh g-1 . Furthermore, catalyst mechanism on molecule level is proposed that AuNPsdominate chemical enhancement and higher electron delocalizablility betweenAuNPs and LiPSs molecules. These results can erect a promising strategy for enhancing lithium polysulfides full conversion.
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Affiliation(s)
- Rong Zou
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China
| | - Jie Zhang
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China
| | - Yawen Zheng
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China
| | - Jinling Li
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China
| | - Wenwu Liu
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China
| | - Fen Ran
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Polymeric Materials Engineering, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China
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Liu WW, Li CX, Cui CY, Liu GL, Lei YX, Zheng YW, Da SJ, Xu ZQ, Zou R, Kong LB, Ran F. Strengthened Interficial Adhesive Fracture Energy by Young's Modulus Matching Degree Strategy in Carbon-Based HTM Free MAPbI 3 Perovskite Solar Cell with Enhanced Mechanical Compatibility. Small 2024; 20:e2304452. [PMID: 37752683 DOI: 10.1002/smll.202304452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 09/11/2023] [Indexed: 09/28/2023]
Abstract
Carbon-based hole transport layer-free perovskite solar cells (PSCs) based on methylammonium lead triiodide (MAPbI3 ) have become one of the research focus due to low cost, easy preparation, and good optoelectronic properties. However, instability of perovskite under vacancy defects and stress-strain makes it difficult to achieve high-efficiency and stable power output. Here, a soft-structured long-chain 2D pentanamine iodide (abbreviated as "PI") is used to improve perovskite quality and interfacial mechanical compatibility. PI containing CH3 (CH2 )4 NH3 + and I- ions not only passivate defects at grain boundaries, but also effectively alleviate residual stress during high temperature annealing via decreasing Young's modulus of perovskite film. Most importantly, PI effectively increases matching degree of Young's modulus between MAPbI3 (47.1 GPa) and carbon (6.7 GPa), and strengthens adhesive fracture energy (Gc ) between perovskite and carbon, which is helpful for outward release of nascent interfacial stress generated under service conditions. Consequently, photoelectric conversion efficiency (PCE) of optimal device is enhanced from 10.85% to 13.76% and operational stability is also significantly improved. 83.1% output is maintained after aging for 720 h at room temperature and 25-60% relative humidity (RH). This strategy of regulation from chemistry and physics provides a strategy for efficient and stable carbon-based PSCs.
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Affiliation(s)
- Wen-Wu Liu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Cai-Xia Li
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Chong-Yang Cui
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Guang-Long Liu
- Nickel-Cobalt New Materials Technology Innovation Center Co. LTD of Gansu Jinchuan, Jinchang, 737100, P. R. China
| | - Yi-Xiao Lei
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Ya-Wen Zheng
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Shi-Ji Da
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Zhi-Qiang Xu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Rong Zou
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Ling-Bin Kong
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Fen Ran
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
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