Reversible Zn/polymer heterogeneous anode
Abstract Commercialization of Zn‐metal anodes with low cost and high theoretical capacity is hindered by the poor reversibility caused by dendrites growth, side reactions, and the slow Zn2+‐transport and reaction kinetics. Herein, a reversible heterogeneous electrode of Zn‐nanocrystallites/polyvinyl...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-06-01
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| Series: | Carbon Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cey2.370 |
| _version_ | 1797793638805143552 |
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| author | Lingyun Xiong Hao Fu Kai Yang Ji Young Kim Ren Ren Joong Kee Lee Woochul Yang Guicheng Liu |
| author_facet | Lingyun Xiong Hao Fu Kai Yang Ji Young Kim Ren Ren Joong Kee Lee Woochul Yang Guicheng Liu |
| author_sort | Lingyun Xiong |
| collection | DOAJ |
| description | Abstract Commercialization of Zn‐metal anodes with low cost and high theoretical capacity is hindered by the poor reversibility caused by dendrites growth, side reactions, and the slow Zn2+‐transport and reaction kinetics. Herein, a reversible heterogeneous electrode of Zn‐nanocrystallites/polyvinyl‐phosphonic acrylamide (Zn/PPAm) with fast electrochemical kinetics is designed for the first time: phosphonic acid groups with strong polarity and chelation effect ensure structural reversibility and stability of the three‐dimensional Zn‐storage‐host PPAm network and the Zn/PPAm hybrid; hydrophobic carbon chains suppress side reactions such as hydrogen evolution and corrosion; weak electron‐donating amide groups constitute Zn2+‐transport channels and promote “desolvation” and “solvation” effects of Zn2+ by dragging the PPAm network on the Zn‐metal surface to compress/stretch during Zn plating/stripping, respectively; and the heterostructure and Zn nanocrystallites suppress dendrite growth and enhance electrochemical reactivity, respectively. Thus, the Zn/PPAm electrode shows cycle reversibility of over 6000 h with a hysteresis voltage as low as 31 mV in symmetrical cells and excellent durability and flexibility in fiber‐shaped batteries. |
| first_indexed | 2024-03-13T02:50:12Z |
| format | Article |
| id | doaj.art-2346a85206a64884bc09e5f8c02d0874 |
| institution | Directory Open Access Journal |
| issn | 2637-9368 |
| language | English |
| last_indexed | 2024-03-13T02:50:12Z |
| publishDate | 2023-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj.art-2346a85206a64884bc09e5f8c02d08742023-06-28T12:27:32ZengWileyCarbon Energy2637-93682023-06-0156n/an/a10.1002/cey2.370Reversible Zn/polymer heterogeneous anodeLingyun Xiong0Hao Fu1Kai Yang2Ji Young Kim3Ren Ren4Joong Kee Lee5Woochul Yang6Guicheng Liu7Department of Physics Dongguk University Seoul Republic of KoreaDepartment of Physics Dongguk University Seoul Republic of KoreaDepartment of Physics Dongguk University Seoul Republic of KoreaEnergy Storage Research Center, Clean Energy Institute, Korea Institute of Science and Technology (KIST) Seongbuk‐gu Seoul Republic of KoreaEnergy Storage Research Center, Clean Energy Institute, Korea Institute of Science and Technology (KIST) Seongbuk‐gu Seoul Republic of KoreaEnergy Storage Research Center, Clean Energy Institute, Korea Institute of Science and Technology (KIST) Seongbuk‐gu Seoul Republic of KoreaDepartment of Physics Dongguk University Seoul Republic of KoreaSchool of Energy Power and Mechanical Engineering North China Electric Power University Beijing ChinaAbstract Commercialization of Zn‐metal anodes with low cost and high theoretical capacity is hindered by the poor reversibility caused by dendrites growth, side reactions, and the slow Zn2+‐transport and reaction kinetics. Herein, a reversible heterogeneous electrode of Zn‐nanocrystallites/polyvinyl‐phosphonic acrylamide (Zn/PPAm) with fast electrochemical kinetics is designed for the first time: phosphonic acid groups with strong polarity and chelation effect ensure structural reversibility and stability of the three‐dimensional Zn‐storage‐host PPAm network and the Zn/PPAm hybrid; hydrophobic carbon chains suppress side reactions such as hydrogen evolution and corrosion; weak electron‐donating amide groups constitute Zn2+‐transport channels and promote “desolvation” and “solvation” effects of Zn2+ by dragging the PPAm network on the Zn‐metal surface to compress/stretch during Zn plating/stripping, respectively; and the heterostructure and Zn nanocrystallites suppress dendrite growth and enhance electrochemical reactivity, respectively. Thus, the Zn/PPAm electrode shows cycle reversibility of over 6000 h with a hysteresis voltage as low as 31 mV in symmetrical cells and excellent durability and flexibility in fiber‐shaped batteries.https://doi.org/10.1002/cey2.370dendrite‐freeelectrode process kineticsfiber‐shaped batteryreversible metal/polymer heterostructureZn‐metal anode |
| spellingShingle | Lingyun Xiong Hao Fu Kai Yang Ji Young Kim Ren Ren Joong Kee Lee Woochul Yang Guicheng Liu Reversible Zn/polymer heterogeneous anode Carbon Energy dendrite‐free electrode process kinetics fiber‐shaped battery reversible metal/polymer heterostructure Zn‐metal anode |
| title | Reversible Zn/polymer heterogeneous anode |
| title_full | Reversible Zn/polymer heterogeneous anode |
| title_fullStr | Reversible Zn/polymer heterogeneous anode |
| title_full_unstemmed | Reversible Zn/polymer heterogeneous anode |
| title_short | Reversible Zn/polymer heterogeneous anode |
| title_sort | reversible zn polymer heterogeneous anode |
| topic | dendrite‐free electrode process kinetics fiber‐shaped battery reversible metal/polymer heterostructure Zn‐metal anode |
| url | https://doi.org/10.1002/cey2.370 |
| work_keys_str_mv | AT lingyunxiong reversibleznpolymerheterogeneousanode AT haofu reversibleznpolymerheterogeneousanode AT kaiyang reversibleznpolymerheterogeneousanode AT jiyoungkim reversibleznpolymerheterogeneousanode AT renren reversibleznpolymerheterogeneousanode AT joongkeelee reversibleznpolymerheterogeneousanode AT woochulyang reversibleznpolymerheterogeneousanode AT guichengliu reversibleznpolymerheterogeneousanode |