Built-in oriented electric field facilitating durable Zn MnO2 battery

Lian, Sitian; Sun, Congli; Xu, Wei; Huo, Wangchen; Luo, Yanzhu; Zhao, Kangning; Yao, Guang; Xu, Wangwang; Zhang, Yuxin; Li, Zhi; Yu, Kesong; Zhao, Hongbin; Cheng, Hongwei; Zhang, Jiujun; Mai, Liqiang

doi:10.1016/j.nanoen.2019.04.038

Cited by 160 publications

(111 citation statements)

References 48 publications

Supporting

Mentioning

106

Contrasting

Order By: Relevance

“…Moreover, a recorded energy density of 511.9 Wh kg −1 was obtained at the power density of 137 W kg −1 , as well as a high power density of 3908 W kg −1 at the energy density of 123.5 Wh kg −1 . Such superior performance is comparable with that of recently reported cathode materials for aqueous ZIBs (Figure d), such as α‐MnO 2 /CNTs, α‐MnO 2 @TiO 2 , β‐MnO 2 , Mn 2 O 3 @ppy, Na 0.44 MnO 2 , K 0.8 Mn 8 O 16 ,15b FeHCF, V 2 O 5 , V 5 O 12 ·6H 2 O, Li x V 2 O 5 ·nH 2 O, and so on. The cycle performance of the GCF based batteries were evaluated in Figure e,f.…”

Section: Resultssupporting

confidence: 87%

“…Figure S8 in the Supporting Information showed the EIS curves of the GCF batteries before and after 1000 cycles of GCD tests. After tests, the charge transfer resistance of the GCF batteries increased from 1.2 to 3.7 Ω, which suggests the faster charge kinetics benefited from the GCF than that of recently reported cathode materials, such as the oxygen‐deficient δ‐MnO 2 ,15a the α‐MnO 2 @TiO 2 nanowires, the Si/C composites, the Ta 2 NiSe 5 flakes, and so on. Moreover, the electrochemical performance of the Na:MnO 2 /GCF electrode with high mass‐loadings were conducted in Figure S9 in the Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Electrochemically Derived Graphene‐Like Carbon Film as a Superb Substrate for High‐Performance Aqueous Zn‐Ion Batteries

Wang

Tao

et al. 2019

Adv Funct Materials

View full text Add to dashboard Cite

3D graphene, as a light substrate for active loadings, is essential to achieve high energy density for aqueous Zn-ion batteries, yet traditional synthesis routes are inefficient with high energy consumption. Reported here is a simplified procedure to transform the raw graphite paper directly into the graphene-like carbon film (GCF). The electrochemically derived GCF contains a 2D-3D hybrid network with interconnected graphene sheets, and offers a highly porous structure. To realize high energy density, the Na:MnO 2 /GCF cathode and Zn/GCF anode are fabricated by electrochemical deposition. The GCF-based Zn-ion batteries deliver a high initial discharge capacity of 381.8 mA h g −1 at 100 mA g −1 and a reversible capacity of 188.0 mA h g −1 after 1000 cycles at 1000 mA g −1 . Moreover, a recorded energy density of 511.9 Wh kg −1 is obtained at a power density of 137 W kg −1 . The electrochemical kinetics measurement reveals the high capacitive contribution of the GCF and a co-insertion/desertion mechanism of H + and Zn 2+ ions. First-principles calculations are also carried out to investigate the effect of Na + doping on the electrochemical performance of layered δ-MnO 2 cathodes. The results demonstrate the attractive potential of the GCF substrate in the application of the rechargeable batteries.

show abstract

Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Electrochemically Derived Graphene‐Like Carbon Film as a Superb Substrate for High‐Performance Aqueous Zn‐Ion Batteries

Wang

Tao

et al. 2019

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…Up to date, many efforts have been made to improve the cycle stability of the α-MnO 2 materials, including adding MnSO 4 into the electrolyte and protecting the surface of α-MnO 2 [11]. For example, Lian et al [12] introduced the gradient Ti doping on the surface of the α-MnO 2 nanowires, and achieved the Zn/MnO 2 batteries with excellent high-rate capability and ultralong cycling stability. Other similar studies like the α-MnO 2 @C [13] and α-MnO 2 @In 2 O 3 [14] also improved the cycling stability and rate performance of the α-MnO 2 -based AZIBs.…”

Section: Introductionmentioning

confidence: 99%

Self-assembled α-MnO2 urchin-like microspheres as a high-performance cathode for aqueous Zn-ion batteries

Tao

Zhang

et al. 2020

Sci. China Mater.

View full text Add to dashboard Cite

Aqueous Zn-ion batteries (AZIBs) are one of the promising battery technologies for the green energy storage and electric vehicles. As one attractive cathode material for AZIBs, α-MnO 2 materials exhibit superior electrochemical properties. However, their long-term reversibility is still in great suspense. Considering the decisive effect of the structure and morphology on the α-MnO 2 materials, hierarchical α-MnO 2 materials would be promising to improve the cycle performance of AZIB. Here, we synthesized the α-MnO 2 urchin-like microspheres (AUM) via a self-assembled method. The porous microspheres composed of one-dimensional α-MnO 2 nanofibers with high crystallinity, which improved the surface area and active sites for Zn 2+ intercalation. The AUMbased AZIB realized a high initial capacity of 308.0 mA h g −1 , and the highest energy density was 396.7 W h kg −1 . The kinetics investigation confirmed the high capacitive contribution and fast ion diffusion of the AUM. Ex-situ XRD measurement further verified the synergistic insertion/extraction of H + and Zn 2+ ions during the charge/discharge process. The superiority of the AUM guaranteed good electrochemical performance and reversible phase evolution, and this application would promote the follow-up research on the advanced AZIB.

show abstract

“…Another method is to decrease the feature size of SnS 2 and build nanostructures in order to reduce the length of ion transportation. Sulfur vacancies have been recently reported to increase the electrical conductivity of SnS 2 [28][29][30][31][32][33][34]. Thus, rational design of hierarchical structures with sulfur vacancies would improve the electrochemical performance of SnS 2 .…”

Section: Introductionmentioning

confidence: 99%

Sulfur-Deficient Porous SnS2−x Microflowers as Superior Anode for Alkaline Ion Batteries

et al. 2020

Self Cite

View full text Add to dashboard Cite

SnS2 as a high energy anode material has attracted extensive research interest recently. However, the fast capacity decay and low rate performance in alkaline-ion batteries associated with repeated volume variation and low electrical conductivity plague them from practical application. Herein, we propose a facile method to solve this problem by synthesizing porous SnS2 microflowers with in-situ formed sulfur vacancies. The flexible porous nanosheets in the three-dimensional flower-like nanostructure provide facile strain relaxation to avoid stress concentration during the volume changes. Rich sulfur vacancies and porous structure enable the fast and efficient electron transport. The porous SnS2−x microflowers exhibit outstanding performance for lithium ion battery in terms of high capacity (1375 mAh g−1 at 100 mA g−1) and outstanding rate capability (827 mA h g−1 at high rate of 2 A g−1). For sodium ion battery, a high capacity (~522 mAh g−1) can be achieved at 5 A g−1 after 200 cycles for SnS2−x microflowers. The rational design in nanostructures, as well as the chemical compositions, might create new opportunities in designing the new architecture for highly efficient energy storage devices.

show abstract

Built-in oriented electric field facilitating durable Zn MnO2 battery

Cited by 160 publications

References 48 publications

Electrochemically Derived Graphene‐Like Carbon Film as a Superb Substrate for High‐Performance Aqueous Zn‐Ion Batteries

Electrochemically Derived Graphene‐Like Carbon Film as a Superb Substrate for High‐Performance Aqueous Zn‐Ion Batteries

Self-assembled α-MnO2 urchin-like microspheres as a high-performance cathode for aqueous Zn-ion batteries

Sulfur-Deficient Porous SnS2−x Microflowers as Superior Anode for Alkaline Ion Batteries

Contact Info

Product

Resources

About