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Layered Ca0.28 MnO2 ·0.5H2 O as a High Performance Cathode for Aqueous Zinc-Ion Battery.
Small. 2020 Apr; 16(17):e2000597.S

Abstract

Aqueous zinc-ion batteries are promising candidates for grid-scale energy storage because of their intrinsic safety, low cost, and high energy intensity. However, lack of suitable cathode materials with both excellent rate performance and cycling stability hinders further practical application of aqueous zinc-ion batteries. Here, a nanoflake-self-assembled nanorod structure of Ca0.28 MnO2 ·0.5H2 O as Zn-insertion cathode material is designed. The Ca0.28 MnO2 ·0.5H2 O exhibits a reversible capacity of 298 mAh g-1 at 175 mA g-1 and long-term cycling stability over 5000 cycles with no obvious capacity fading, which indicates that the per-insertion of Ca ions and water can significantly improve reversible insertion/extraction stability of Zn2+ in Mn-based layered type material. Further, its charge storage mechanism, especially hydrogen ions, is elucidated. A comprehensive study suggests that the intercalation of hydrogen ions in the first discharge plat is controled by both pH value and type of anion of electrolyte. Further, it can stabilize the Ca0.28 MnO2 ·0.5H2 O cathode and facilitate the following insertion of Zn2+ in 1 m ZnSO4 /0.1 m MnSO4 electrolyte. This work can enlighten and promote the development of high-performance rechargeable aqueous zinc-ion batteries.

Authors+Show Affiliations

Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32249537

Citation

Sun, Tianjiang, et al. "Layered Ca0.28 MnO2 ·0.5H2 O as a High Performance Cathode for Aqueous Zinc-Ion Battery." Small (Weinheim an Der Bergstrasse, Germany), vol. 16, no. 17, 2020, pp. e2000597.
Sun T, Nian Q, Zheng S, et al. Layered Ca0.28 MnO2 ·0.5H2 O as a High Performance Cathode for Aqueous Zinc-Ion Battery. Small. 2020;16(17):e2000597.
Sun, T., Nian, Q., Zheng, S., Shi, J., & Tao, Z. (2020). Layered Ca0.28 MnO2 ·0.5H2 O as a High Performance Cathode for Aqueous Zinc-Ion Battery. Small (Weinheim an Der Bergstrasse, Germany), 16(17), e2000597. https://doi.org/10.1002/smll.202000597
Sun T, et al. Layered Ca0.28 MnO2 ·0.5H2 O as a High Performance Cathode for Aqueous Zinc-Ion Battery. Small. 2020;16(17):e2000597. PubMed PMID: 32249537.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Layered Ca0.28 MnO2 ·0.5H2 O as a High Performance Cathode for Aqueous Zinc-Ion Battery. AU - Sun,Tianjiang, AU - Nian,Qingshun, AU - Zheng,Shibing, AU - Shi,Jinqiang, AU - Tao,Zhanliang, Y1 - 2020/04/06/ PY - 2020/01/30/received PY - 2020/02/23/revised PY - 2020/03/06/accepted PY - 2020/4/7/pubmed PY - 2020/4/7/medline PY - 2020/4/7/entrez KW - Ca0.28MnO2·0.5H2O KW - aqueous zinc-ion batteries KW - birnessite KW - cathode materials SP - e2000597 EP - e2000597 JF - Small (Weinheim an der Bergstrasse, Germany) JO - Small VL - 16 IS - 17 N2 - Aqueous zinc-ion batteries are promising candidates for grid-scale energy storage because of their intrinsic safety, low cost, and high energy intensity. However, lack of suitable cathode materials with both excellent rate performance and cycling stability hinders further practical application of aqueous zinc-ion batteries. Here, a nanoflake-self-assembled nanorod structure of Ca0.28 MnO2 ·0.5H2 O as Zn-insertion cathode material is designed. The Ca0.28 MnO2 ·0.5H2 O exhibits a reversible capacity of 298 mAh g-1 at 175 mA g-1 and long-term cycling stability over 5000 cycles with no obvious capacity fading, which indicates that the per-insertion of Ca ions and water can significantly improve reversible insertion/extraction stability of Zn2+ in Mn-based layered type material. Further, its charge storage mechanism, especially hydrogen ions, is elucidated. A comprehensive study suggests that the intercalation of hydrogen ions in the first discharge plat is controled by both pH value and type of anion of electrolyte. Further, it can stabilize the Ca0.28 MnO2 ·0.5H2 O cathode and facilitate the following insertion of Zn2+ in 1 m ZnSO4 /0.1 m MnSO4 electrolyte. This work can enlighten and promote the development of high-performance rechargeable aqueous zinc-ion batteries. SN - 1613-6829 UR - https://www.unboundmedicine.com/medline/citation/32249537/Layered_Ca0_28_MnO2_·0_5H2_O_as_a_High_Performance_Cathode_for_Aqueous_Zinc_Ion_Battery_ L2 - https://doi.org/10.1002/smll.202000597 DB - PRIME DP - Unbound Medicine ER -
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