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Lin H, Cai S, Li L, Ma Z, Wang X, Liang S, Fang G, Xiao M, Luo Z. Zincophile Zn 2+ Conductor Regulation by Ultrathin Nano MoO 3 Coating for Dendrite-Free Zn Anode. SMALL METHODS 2024:e2401096. [PMID: 39268791 DOI: 10.1002/smtd.202401096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2024] [Indexed: 09/15/2024]
Abstract
Aqueous battery with nonflammable and instinctive safe properties has received great attention. However, issues related to Zn anode such as side reactions and rampant dendrite growth hinder the long-term circulation of AZMBs. Herein, an ultrathin(35 nm) MoO3 coating is deposited on the Zn anode by means of vacuum vapor deposition for the first time. Due to the peculiar layer structure of MoO3, insertion of Zn2+ in ZnxMoO3 acts as Zn2+ ion conductor, which regulates Zn2+ deposition in an ordered manner. Additionally, the MoO3 coating can also inhibit the hydrogen evolution and corrosion reactions at the interface. Therefore, both Zn//MoO3@Cu asymmetric battery and Zn symmetric battery cells manage to deliver satisfactory electrochemical performances. The symmetric cell assembled with MoO3@Zn shows a significant long cycle life of more than 1600 h at a current density of 2 mA cm-2. Meanwhile, the MoO3@Zn//Cu asymmetric cell exhibits an ultrahigh Zn deposition/stripping efficiency of 99.82% after a stable cycling of 650 h at 2 mA cm-2. This study proposes a concept of "zincophile Zn2+ conductor regulation" to dictate Zn electrodeposition and broadens novel design of vacuum evaporation for nano MoO3 modified Zn anodes.
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Affiliation(s)
- Haisheng Lin
- College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Shujuan Cai
- College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Lanyan Li
- School of Science, Hunan University of Technology and Business, Changsha, 410205, China
| | - Zhongyun Ma
- College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Xianyou Wang
- College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Shuquan Liang
- School of Materials Science and Engineering, Central South University, Changsha, 410083, P. R. China
| | - Guozhao Fang
- School of Materials Science and Engineering, Central South University, Changsha, 410083, P. R. China
| | - Manjun Xiao
- College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Zhigao Luo
- College of Chemistry, Xiangtan University, Xiangtan, 411105, China
- National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, National Base for International Science & Technology Cooperation, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan, 411105, China
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Han Y, Wang F, Yan L, Luo L, Qin Y, Zhu C, Hao J, Chen Q, Zou X, Zhou Y, Xiang B. Dual-function additive enables a self-regulatory mechanism to balance cathode-anode interface demands in Zn‖MnO 2 batteries. Chem Sci 2024; 15:12336-12348. [PMID: 39118635 PMCID: PMC11304731 DOI: 10.1039/d4sc02626h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Accepted: 07/02/2024] [Indexed: 08/10/2024] Open
Abstract
The poor reversibility of the zinc (Zn) anodes and the irreversible deposition/dissolution of Mn2+/MnO2 significantly impede the commercialization of Zn-Mn aqueous batteries (ZMABs). In reducing the difference between the desired interfacial reaction environments of the cathode and anode, we found that they face the same problem of interference-the generation of irreversible corrosion products. Herein, we have introduced a novel self-regulatory mechanism. This mechanism involves the addition of sodium dihydrogen phosphate, which shifts from passive protection to active regulation. It effectively captures OH- ions, prevents corrosion product formation, and facilitates the in situ generation of a solid electrolyte interface (SEI) film. This modification also homogenizes Zn ion flow and improves the reversibility of Zn plating and stripping. Furthermore, a stable and slightly acidic environment has been established to stabilize the pH at the cathodic interface, mitigate corrosion product formation, and enhance the reversible deposition and dissolution of Mn2+/MnO2. With the optimal electrolyte, Zn‖Zn symmetric cells demonstrate stable operation for over 3000 hours at 1 mA cm-2, 1 mA h cm-2. Additionally, the Zn‖Cu cells maintain high reversibility after 1000 cycles, achieving an average coulombic efficiency (CE) of 99.76%. The assembled Zn‖MnO2 full cells exhibit exceptional cycling stability and rate performance. This work adopts the approach of seeking common ground and emphasizing the balance of cathode and anode interfacial requirements, which represents a new and significant insight for design of ZMABs with high reversibility and high cyclability.
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Affiliation(s)
- Yuying Han
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Fangzheng Wang
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Lijin Yan
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Liang Luo
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Yuan Qin
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Chong Zhu
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
| | - Jiangyu Hao
- College of Chemistry and Chemical Engineering, Chongqing University of Technology Chongqing 400054 China
| | - Qizhi Chen
- Guangxi Huiyuan Manganese Industry Co., Ltd Laibin 546138 Guangxi China
| | - Xuefeng Zou
- Guizhou Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University Guiyang 550018 Guizhou China
| | - Yang Zhou
- Analytical and Testing Center, Chongqing University Chongqing 401331 China
| | - Bin Xiang
- College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 China
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Liang H, Wu J, Li J, Wang J, Yang Z, Wu Y. Achieving Dendrite-Free and By-Product-Free Aqueous Zn-Ion Battery Anode via Nicotinic Acid Electrolyte Additive with Molecule-Ion Conversion Mechanism. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402595. [PMID: 38764288 DOI: 10.1002/smll.202402595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/12/2024] [Indexed: 05/21/2024]
Abstract
The widespread adoption of aqueous Zn ion batteries is hindered by the instability of the Zn anode. Herein, an elegant strategy is proposed to enhance the stability of Zn anode by incorporating nicotinic acid (NA), an additive with a unique molecule-ion conversion mechanism, to optimize the anode/electrolyte interface and the typical ZnSO4 electrolyte system. Experimental characterization and theoretical calculations demonstrate that the NA additive preferentially replaces H2O in the original solvation shell and adsorbs onto the Zn anode surface upon conversion from molecule to ion in the electrolyte environment, thereby suppressing side reactions arising from activated H2O decomposition and stochastic growth of Zn dendrites. Simultaneously, such a molecule-to-ion conversion mechanism may induce preferential deposition of Zn along the (002) plane. Benefiting from it, the Zn||Zn symmetric battery cycles stably for 2500 h at 1 mA cm-2, 1 mAh cm-2. More encouragingly, the Zn||AC full batteries and the Zn||AC full batteries using NA electrolyte and Zn||VO2 full batteries also exhibit excellent performance improvements. This work emphasizes the role of variation in the form of additives (especially weak acid-based additives) in fine-tuning the solvation structure and the anode/electrolyte interface, hopefully enhancing the performance of various aqueous metal batteries.
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Affiliation(s)
- Hanhao Liang
- Hunan Province Key Laboratory of Chemical Power Source, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University, Changsha, 410083, China
| | - Jian Wu
- Hunan Province Key Laboratory of Chemical Power Source, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University, Changsha, 410083, China
| | - Jiaming Li
- Hunan Province Key Laboratory of Chemical Power Source, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University, Changsha, 410083, China
| | - Jianglin Wang
- Hunan Province Key Laboratory of Chemical Power Source, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University, Changsha, 410083, China
| | - Zhanhong Yang
- Hunan Province Key Laboratory of Chemical Power Source, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Yuping Wu
- Confucius Energy Storage Lab, School of Energy and Environment, Southeast University, Nanjing, 210096, China
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