Energy & Environmental Science
·
2024
·Vol. 17
·期 13
·4794-4802
·
IF 32.4
Zhengqiang Hu,Fengling Zhang,Feng Wu,Huirong Wang,Anbin Zhou,Yi Chen,Tianyang Xue,Renjie Chen,Li Li
In electrochemical devices, the electric double layer (EDL) theory posits that the potential difference of the Helmholtz layer significantly influences the activation energy and reaction rate of the electrochemical reaction, which determines the uniformity of metal ion deposition. In this work, we compare the differential capacitance of metal cationic sulfate, along with factors such as cost as well as safety, and Ce(SO4)2 is selected to adjust the EDL at the Zn anode/electrolyte interface. Molecular dynamics simulations show the formation of a more compressed diffuse layer with the help of Ce4+, resulting in a decreased potential difference of the Helmholtz layer, an improved Zn2+ deposition overpotential and a reduced Zn electrode corrosion rate. In situ XRD and Raman spectroscopy reveal that Zn2+ deposition is favored along the (002) crystal plane, and hydrogen evolution is hindered. The Ce4+ modified electrolyte enables a Zn anode with high coulombic efficiency (99.6%) over 600 cycles at 10 mA cm−2. The compressed EDL extends the lifespan of the Zn–Zn cell to 2500 hours at 5 mA cm−2 and stable cycling for 300 cycles at 20 mA cm−2 and 10 mA h cm−2. Assembling Zn full cells with high-loading cathodes shows enhanced long-term cycling performance. Our findings reveal the potential of using high-valence metal cations like Ce4+ to regulate the EDL and uniform Zn2+ deposition in ZIBs, which suggests a promising direction for developing electrolytes for practical ZIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Small Methods
·
2023
·
IF 12.4
Chunlai Song,Qiang Wang,Ruihang Wen,Qiben Tang,Zhiqiang Luo,Zhihao Yuan
Benzoquinone (BQ) is considered to be a desirable cathode material for aqueous zinc-based batteries. The major limitations of BQ electrode are the severe sublimation and poor electrical conductivity, which results in serious mass loss during electrode preparation and inferior rate performance. In this study, iodine (I 2 ) species are utilized as an efficient catalyst for the highly reversible conversion of BQ/BQ 2− couple in the Zn-BQ battery system, wherein N-doped porous carbon is employed as a host material for anchoring the BQ molecule. In the combination electrode (denoted as BQ-I@NPC) with 1wt% I 2 additive where I 2 can serve as a carrier to accelerates the Zn 2+ transmission, and reduce the voltage hysteresis of the electrode. As a result, the BQ-I@NPC cathode delivers a high specific capacity of ≈482 mAh g −1 at 0.25 A g −1 , realizing a high energy density of 545 Wh kg −1 (based on BQ), which is the highest values among reported organic cathode materials for aqueous Zn-based batteries. Also, a high BQ loading (8 mg cm −2 ) can be attained, and achieving a superior cycling stability with a capacity retention of ≈80% after 20,000 times at 10 C. The work proposes an effective approach toward high performance organic electrode materials.
研究领域:
材料科学
·
化学工程
·
能源技术
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zhuocheng Tian,Hang Liu,Mengyuan Cheng,Lianmeng Cui,Rongyu Zhang,Xu Yang,Di Wu,Dongxue Wang,Jianlong Xia
Aqueous zinc-ion batteries are emerging as promising sustainable energy-storage devices. However, their cyclic stability is still a great challenge due to the inevitable parasitic reaction and dendrite growth induced by water. Herein, a cosolvent strategy based on competitive effect is proposed to address the aforementioned challenges. Ethanol with a higher Gutmann donor number demonstrates lower polarity and better wettability on the Zn surface compared with water, which endows ethanol with the ability of minimizing water activity by weakening H bonds and preferentially adsorbing on the Zn electrode. The above competitive advantages synergistically contribute to inhibiting the decomposition of free water and dendrite growth. Besides, an organic–inorganic hybrid solid–electrolyte interphase layer is in situ built based on ethanol additives, where organic matrix suppresses water corrosion while inorganic fillers promote fast Zn2+ diffusion. Consequently, the electrolyte with ethanol additives boosts a high reversibility of Zn deposition, long-term durability, as well as superior Zn2+ diffusibility in both Zn half-cells (Zn||Cu and Zn||Zn batteries) and Zn full cells (Zn||PTCDA and Zn||VO2 batteries). This work sheds light on a universal strategy to design a high-reversible and dendrite-free Zn anode for stable aqueous batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2021
·Vol. 14
·期 17
·4895
·
IF 3.623
Linqing Zuo,Haodong Sun,Xinhai Yuan,Juan Wen,Xi Chen,Shiyu Zhou,Yuping Wu,Teunis van Ree
The Zn/MnO2battery is a promising energy storage system, owing to its high energy density and low cost, but due to the dissolution of the cathode material, its cycle life is limited, which hinders its further development. Therefore, we introduced agar as a microskin for a MnO2electrode to improve its cycle life and optimize other electrochemical properties. The results showed that the agar-coating layer improved the wettability of the electrode material, thereby promoting the diffusion rate of Zn2+and reducing the interface impedance of the MnO2electrode material. Therefore, the Zn/MnO2battery exhibited outstanding rate performance. In addition, the agar-coating layer promoted the reversibility of the MnO2/Mn2+reaction and acted as a colloidal physical barrier to prevent the dissolution of Mn2+, so that the Zn/MnO2battery had a high specific capacity and exhibited excellent cycle stability.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Luping Li,Shuang Cheng,Liyu Deng,Ting Liu,Wenju Dong,Yuxiu Liu,Longjun Huang,Huan Yao,Xu Ji
Alkaline nickel–zinc (Ni–Zn) batteries, as traditional rechargeable aqueous batteries, possess an obvious advantage in terms of energy density, but their development has been hindered by the anode-concerned problems, Zn dendrites, self-corrosion, passivation, deformation, and hydrogen evolution reaction (HER). Herein, to solve these problems, a dual protective strategy is proposed toward the anode using ZnO as an initial active material, including a C coating on ZnO (ZnO@C) and a thin poly(vinyl alcohol) (PVA) layer coating on the electrode (ZnO@C-PVA). In a three-electrode configuration, the reversible capacity can reach 600 mAh g–1 for the ZnO@C-PVA. Using excessive commercial Ni(OH)2 as the cathode, the alkaline Ni–Zn cells exhibit good electrochemical performance: Discharge capacity can be as high as 640–650 mAh g–1 at 4 A g–1 with a Coulomb efficiency (CE) as high as 97–99% after activity, suggesting low self-corrosion and HER. Capacity retention is 97% after 1200 cycles, indicating rather good durability. The discharge capacity is even slightly increased with the increase of charge/discharge current density (≤8 A g–1), implying good rate performance. Additionally, the discharge voltage can reach 1.8 V (midpoint value) at various current densities, reflecting the fast reaction kinetics of the anode. Most importantly, no Zn dendrites and passivation are observed after long-term cycling. The strategy proposed here can solve the anode-concerned problems effectively, exhibiting a high application prospect.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Chengwei Wang,Liu Han,Shuo Yang,Zhaolin Liu,Ming Liu,Bing Li
We report zinc cobalt-layered double hydroxides (ZnCo-LDH) as the active cathode materials for the development of high-performance Zn-ZnCo batteries . Electrochemical investigations show the battery’s capacity increases linearly with increasing the ZnCo-LDH loading (up to 60 mg cm −2 ). The resulting Zn-ZnCo battery exhibits excellent rate performance and cycle stability, retaining 86% of its capacity even after 5000 cycles of testing. By incorporating ZnCo-LDH with a Pt/C-coated gas diffusion layer to form an integrated multifunctional air-cathode, we demonstrate a hybrid Zn battery, which combines the merits of Zn-ZnCo and Zn-air batteries to show a characteristic two-stage charge-discharge voltage profile. The current work demonstrates the linear relationship between the battery capacity and the active material loading. The results also highlight that a greater battery capacity requires further increasing of loading though very challenging.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Crystals
·
2022
·Vol. 12
·期 11
·1600
·
IF 2.67
Kun You,Yifei Yuan,Xiuxian Liao,Wenjun Song,Xuedong He,Huile Jin,Shun Wang
Manganese dioxide is regarded as a promising energy functional material due to its open tunnel structure with enormous applications in energy storage and catalysis. In this paper, α-MnO2with a 2 × 2 tunnel structure and β-MnO2with a 1 × 1 tunnel structure were hydrothermally synthesized, which possess characteristic tunnel structures formed by the interconnected unit structure of [MnO6] octahedrons. With regards to their different tunnel dimensions, the specific mechanism of ion intercalation in these two phases and the effect on their performance as aqueous Zn-MnO2battery cathodes are explored and compared. Comprehensive analyses illustrate that both α-MnO2and β-MnO2provide decent capacity in the aqueous battery system, but their intrinsic stability is poor due to the structural instability upon cycling. At the same time, experiments show that α-MnO2has a better rate performance than β-MnO2under larger currents, thus implying that the former has a broader application in this aqueous battery system.Keywords:α-MnO2and β-MnO2nanostructures;aqueous zinc batteries;electrochemical characterization
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Shiwei Liu,Shiqiang Luo,Gehan A.J. Amaratunga,Pritesh Hiralal,Zanxiang Nie
Combining the strengths of supercapacitors and batteries onto a single device is a holy grail which would enable many applications to be covered by the same device. Here, we firstly develop a hybrid electrochemical device integrating chemical pathways of a zinc hybrid supercapacitor , an electrolytic MnO 2 -zinc battery and a zinc-iodide battery. The integrated hybrid devices demonstrate a capacity of 453.1 mAh/g (corresponding to an energy of 400.4 Wh/kg, based on weight of activated carbon) and a capacitance of 720.7 F/g at output power of 220.3 W/kg. The three different chemical pathways symbiotically work together, achieving improved cycling performance, shelf-life and Coulombic Efficiencies compared to any of its constituent systems individually.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yongchuan Liu,Yuanqiang Chen,Xiangxin Zhang,Changxin Lin,Hu Zhang,Xiaofei Miao,Junhong Lin,Sujing Chen,Yining Zhang
Aqueous Zinc–polyaniline (Zn-PANI) batteries have attracted attention due to their high safety and low cost but they suffer from the limited water electrochemical window (1.23 V), fast capacitance decay derived from the structural instability of PANI, and poor electroactivity of PANI in low acidic electrolytes due to its de-protonation. Herein, we firstly report a decoupling design of acid-alkaline electrolyte to maximize the electrochemical window of the electrolyte and optimize the redox chemistry of both PANI cathode and Zn anode. The PANI electrode delivers a higher stability in H 2 SO 4 electrolytes than the conventional Zn 2+ neutral or weakly acidic electrolytes. The optimized electrolyte-decoupling Zn-PANI (EDZPB) battery exhibits an expanded electrochemical stability window over 2 V, a high capacity of 213.3 mAh g −1 at 0.1 A g −1 , and a high cycling life stability (only 6.8% loss after 3000 cycles), showing the great potential of the design for applications in large-scale energy storage.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Advanced Energy Materials
·
2020
·Vol. 10
·期 25
·2000892
·
IF 25.245
Yongchao Tang,Xuejin Li,Haiming Lv,Dong Xie,Wenlong Wang,Chunyi Zhi,Hongfei Li
In aqueous alkaline Zn batteries (AZBs), the Co 3+ /Co 4+ redox pair offers a higher voltage plateau than its Co 2+ /Co 3+ counterpart. However, related studies are scarce, due to two challenges: the Co 3+ /Co 4+ redox pair is more difficult to activate than Co 2+ /Co 3+ ; once activated, the Co 3+ /Co 4+ redox pair is unstable, owing to the rapid reduction of surplus Co 3+ to Co 2+ . Herein, CoSe 2− x is employed as a cathode material in AZBs. Electrochemical analysis recognizes the principal contributions of the Co 3+ /Co 4+ redox pair to the capacity and voltage plateau. Mechanistic studies reveal that CoSe 2− x initially undergoes a phase transformation to derived Co x O y Se z , which has not been observed in other Zn//cobalt oxide batteries. The Se doping effect is conducive to sustaining abundant and stable Co 3+ species in Co x O y Se z . As a result, the battery achieves a 10 000-cycle ultralong lifespan with 0.02% cycle −1 capacity decay, a 1.9-V voltage plateau, and an immense areal specific capacity compared to its low-valence oxide counterparts. When used in a quasi-solid-state electrolyte, as-assembled AZB delivers 4200 cycles and excellent tailorability, a promising result for wearable applications. The presented effective strategy for obtaining long-cyclability cathodes via a phase transformation-induced heteroatom doping effect may promote high-valence metal species mediation toward highly stable electrodes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Xiaofei Miao,Qi Chen,Yongchuan Liu,Xiangxin Zhang,Yuanqiang Chen,Junhong Lin,Sujing Chen,Yining Zhang
At present, Zinc-iodine (Zn//I) batteries have attracted much attention due to their high safety and capacity. However, how to suppress the shuttling of polyiodide ions generated during charging processes is still a tricky problem. Herein, polyaniline (PANI) and polypyrrole (PPy) are electro-polymerized on carbon felt (CF) by constant current and used as cathodes for zinc-iodine (Zn//I) batteries. Electrochemical tests of the PANI@CF and PPy@CF electrodes prove that the PANI@CF electrode has a higher capacity, a stronger ability to suppress shuttling of polyiodine ions, and more excellent cyclic stability than the PPy@CF electrode. According to the material characterizations, the differences of both electrodes in electrochemical performances are mainly caused by the microstructures of PANI and PPy in both electrodes. The PANI has a micro-nano porous structure while the PPy is very dense. The porous PANI not only has more channels for the infiltration of electrolyte, but also can provide more active adsorption sites to minimize the shuttling of polyiodide ions to anode, ensuring the excellent performances of the PANI@CF. However, dense PPy seriously hinders the electrolyte diffusion and triggers the formation of an insulating dense iodine film, bringing poor performances to the PPy@CF. Ultimately, the PANI@CF electrodes achieves the most specific capacity of 235.9 mAh g −1 at 0.35 A g −1 (∼1.7 C) and performs out long cycle life with high stability (75.7% capacitiy rention after 10,000 cycles) at 3.5 A g −1 (∼17 C) in Zn//I battery , manifesting the porous PANI@CF electrode is a greatly promising candidate as cathode for Zn//I batteries in actual application.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Ze Wang,Pei Shi,Qin Liu,Jingying Li,Yi Gan,Jia Yao,Jinghong Xia,Xin Liu,Xin Chen,Ke Qian,Xiang Liu,Lin Lv,Guokun Ma,Li Tao,Jun Zhang,Hanbin Wang,Houzhao Wan,Hao Wang
Alkaline nickel-zinc batteries have attracted more attention due to their inherent safety and high specific energy. However, the cycling stability of Ni–Zn batteries is still an urgent problem. Herein, we fabricate the Ni 12 P 5 @PANI core-shell structure by polyaniline cladding on the Ni 12 P 5 nanowires . The polyaniline not only effectively improves the specific capacity of Ni 12 P 5 , but also greatly enhances the cyclic stability. The optimized Ni 12 P 5 @PANI nanowires provide a specific capacity of 272.8 mAh g −1 at 1 A g −1 (189.2 mAh g −1 at 10 A g −1 , 69.4% retention rate) and long-life cycling (93% capacity retention after 1000 cycles at 10 A g −1 ). Moreover, the theoretical calculations indicate that the polyaniline is easy to polymerize on the surface of Ni 12 P 5 , and the lower formation energy verifies that the polyaniline shell layer can effectively promote the structural stability of Ni 12 P 5 , thus enhancing the cycle life. In addition, the assembled Ni 12 P 5 @PANI//Zn battery retains 112.3% capacity retention after 500 cycles at 3 A g −1 , and provides a high energy density of 287.9 Wh kg −1 and power density of 49.1 kW kg −1 (based on the mass of active substance). This work provides a feasible high-rate and durable cathode material for alkaline Ni–Zn batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）