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Ji Z, Hu T, Zhu Z, Wu D, Lv S, Yuan S, Zou T, Fu X, Yang W, Wang Y. Manipulating the Nanophase Separation of a Polymer-Salt Microfluid Generates an Advanced In Situ Separator for Component-Integrated Energy Storage Devices. ACS NANO 2024; 18:1098-1109. [PMID: 38154058 DOI: 10.1021/acsnano.3c10534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
A polymer separator plays a pivotal role in battery safety, overall electrochemical performance, and cell assembly process. Traditional separators are separately produced from the electrodes and dominated by porous polyolefin thin films. In spite of their commercial success, today's separators are facing growing challenges with the increasing demand on the device safety and performance. As an attempt to address this urgent need, here, we propose a concept of in situ separator technology by manipulating the two-dimensional (2D) microfluid nanophase separation (2D-MFPS) of a poly(vinylidene difluoride)/lithium salt solution during drying. Particularly, nanophase separation is effectively regulated by low humidity, salt type, and compositions. For application studies, this 2D-MFPS is directly performed onto commercial electrodes under drying conditions with low humidity to fabricate a high-performance in situ separator with thickness and porous structures comparable to those of commercial Celgard separators. This in situ separator shows superior performance in high-temperature stability and wetting capability to a variety of liquid electrolytes. Finally, pouch cells with this in situ separator technology are successfully assembled with an extremely simplified separator-stacking-free process and demonstrate stable cycle performance due to the well-controlled porous structures and electrode-separator interface.
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Affiliation(s)
- Zhongfeng Ji
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
| | - Ting Hu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
| | - Zhiwei Zhu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
| | - Dichen Wu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
| | - Shanshan Lv
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
| | - Shiyu Yuan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
| | - Taiwei Zou
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
| | - Xuewei Fu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
| | - Wei Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
| | - Yu Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People's Republic of China
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Bissannagari M, Shaik MR, Cho KY, Kim J, Yoon S. Designing a Bimodal BaTiO 3 Artificial Layer to Boost the Dielectric Effect toward Highly Reversible Dendrite-Free Zn Metal Anodes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:35613-35622. [PMID: 35892284 DOI: 10.1021/acsami.2c07551] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
With the growing interest in suppressing greenhouse gas emissions from fossil fuel combustion, the implementation of electrical energy storage devices for efficiently utilizing renewable energy is expanding worldwide. Zn-ion batteries are attractive for energy storage because of their safety, eco-friendliness, high energy density, and low cost. However, their commercialization is hindered by the poor rechargeability of the zinc anode because of Zn dendrite growth and hydrogen evolution. Herein, we present the application of an artificial layer composed of bimodal BaTiO3 particles on Zn metal to boost the dielectric properties and thus enhance the reversibility of Zn anodes during long-term cycling. The BaTiO3 layer induces electric polarization under external electric fields, causing the Zn ions to move sequentially toward the Zn anode. Moreover, its mechanical characteristics alleviate the volume changes between the BaTiO3 layer and Zn metal. Consequently, Zn dendrite growth is effectively inhibited, and the electrochemical performance is significantly improved in Zn|Zn symmetric cells, resulting in a low overvoltage (39 mV) and stable cycling (800 h) at 1 mA cm-2. Moreover, the Zn-ion full cell using an α-MnO2 cathode exhibits consistent capacity retention up to 380 cycles. This study demonstrates a new strategy to economically and readily suppress dendrite formation by using bimodal dielectric particles as artificial layers to stabilize metal-based batteries.
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Affiliation(s)
- Murali Bissannagari
- Division of Advanced Materials Engineering, Kongju National University, Chungnam 31080, Republic of Korea
| | - Mahammad Rafi Shaik
- Division of Advanced Materials Engineering, Kongju National University, Chungnam 31080, Republic of Korea
| | - Kuk Young Cho
- Department of Materials Science and Chemical Engineering, Hanyang University, Gyeonggi 15588, Republic of Korea
| | - Jihoon Kim
- Division of Advanced Materials Engineering, Kongju National University, Chungnam 31080, Republic of Korea
| | - Sukeun Yoon
- Division of Advanced Materials Engineering, Kongju National University, Chungnam 31080, Republic of Korea
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Lai Y, Li H, Yang Q, Li H, Liu Y, Song Y, Zhong Y, Zhong B, Wu Z, Guo X. Revisit the Progress of Binders for a Silicon-Based Anode from the Perspective of Designed Binder Structure and Special Sized Silicon Nanoparticles. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00453] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yizhu Lai
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Haoyu Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Qing Yang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Haodong Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yuxia Liu
- The Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Yang Song
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yanjun Zhong
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Benhe Zhong
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Zhenguo Wu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaodong Guo
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
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Li M, Zhang Y, Wang Z, Tan P, Liu X, Zhang D, Li G, Xie J, Zhou H. Microstructure evolutions in lithium ion battery electrode manufacturing. CHINESE SCIENCE BULLETIN-CHINESE 2021. [DOI: 10.1360/tb-2021-1069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gonzalez MS, Yan Q, Holoubek J, Wu Z, Zhou H, Patterson N, Petrova V, Liu H, Liu P. Draining Over Blocking: Nano-Composite Janus Separators for Mitigating Internal Shorting of Lithium Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906836. [PMID: 32045051 DOI: 10.1002/adma.201906836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/06/2020] [Indexed: 06/10/2023]
Abstract
Catastrophic battery failure due to internal short is extremely difficult to detect and mitigate. In order to enable the next-generation lithium-metal batteries, a "fail safe" mechanism for internal short is highly desirable. Here, a novel separator design and approach is introduced to mitigate the effects of an internal short circuit by limiting the self-discharge current to prevent cell temperature rise. A nano-composite Janus separator-with a fully electronically insulating side contacting the anode and a partially electronically conductive (PEC) coating with tunable conductivity contacting the cathode-is implemented to intercept dendrites, control internal short circuit resistance, and slowly drain cell capacity. Galvanostatic cycling experiments demonstrate Li-metal batteries with the Janus separator perform normally before shorting, which then results in a gradual increase of internal self-discharge over >25 cycles due to PEC-mitigated shorting. This is contrasted by a sudden voltage drop and complete failure seen with a single layer separator. Potentiostatic charging abuse tests of Li-metal pouch cells result in dendrites completely penetrating the single-layer separator causing high short circuit current and large cell temperature increase; conversely, negligible current and temperature rise occurs with the Janus separator where post mortem electron microscopy shows the PEC layer successfully intercepts dendrites.
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Affiliation(s)
- Matthew S Gonzalez
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Qizhang Yan
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - John Holoubek
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Zhaohui Wu
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Hongyao Zhou
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Nicholas Patterson
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Victoria Petrova
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Haodong Liu
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Ping Liu
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
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