International Journal of Electrochemical Science
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2023
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IF 1.5
Yi Jiang,Hao Zhu,Chunlai Yu,Xu Cao,Lin Cheng,Ruhong Li,Shaoqiang Yang,Changsong Dai
Effects of different specials carbon materials on the performance of negative plates were studied. The addition of carbon materials P1 and P2 greatly improved the high-rate partial-state-of-charge (HRPSoC) cycle performance of the batteries. A negative plate completed 18489 HRPSoC micro-cycles in the first cycle-set when the concentration of P2 was 0.9%. Special properties are required for the carbon materials to be used as additives to the negative electrode materials. Firstly, the carbon material added to the negative electrode should have a good binding force with lead and lead sulfate. Secondly, the carbon material should have a large specific surface area and a larger pore volume. Addition of bismuth sulfide can inhibit the hydrogen evolution of the lead-carbon negative plates. Negative electrodes modified with a C/Bi 2 S 3 composite exhibited good low temperature performance.
研究领域:
材料科学
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电化学
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能源存储技术
✓ 已验证
DOI
高影响因子
Materials
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2020
·Vol. 13
·期 23
·5528
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IF 3.057
Bolong Hong,Xiangming He,Huihua Yi,Chenglin Hu
LiMnBO3is a potential cathode for Li-ion batteries, but it suffers from a low electrochemical activity. To improve the electrochemical performance of LiMnBO3, the effect of polyvinyl pyrrolidone (PVP) as carbon additive was studied. Monoclinic LiMnBO3/C and LiMnBO3-MnO/C materials were obtained by a solid-state method at 500 °C. The structure, morphology and electrochemical behavior of these materials are characterized and compared. The results show that carbon additives and ball-milling dispersants affect the formation of impurities in the final products, but MnO is beneficial for the performance of LiMnBO3. The sample of LiMnBO3-MnO/C delivered a high capacity of 162.1 mAh g−1because the synergistic effect of the MnO/C composite and the suppression of the PVP coating on particle growth facilitates charge transfer and lithium–ion diffusion.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Energy Technology
·
2021
·Vol. 9
·期 8
·2100297
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IF 3.631
Chen Chen,Qianchen Liang,Yan Mo,Xinren Zhang,Xianyou Luo,Jinpeng Wu,Pengyun Hu,Yong Chen
The nonuniform zinc nucleation process on the surface of zinc metal anodes is known to result in irreversible dendrite growth, which brings the risk of short circuit for the zinc-ion hybrid supercapacitor (ZIHS). Herein, a conductive carbon−zinc composite anode with dense active sites is reported to achieve controllable dendrite growth. This unique modified anode in the ZIHS enables extremely low polarization (47 mV) in the symmetric battery test and delivers excellent application performance (capacity retention of 97.7% for 10 000 cycles). In addition, the changes in crystallographic orientation and morphological characteristics of the zinc electrode during deposition are observed by ex situ analysis. The improved zinc nucleation pattern of the modified anode verifies that the carbon additive can significantly facilitate isotropy in Zn deposition. Such a successful application of this economic and expandable modification strategy shows that carbon additives have significant potential in improving the stability of the anode.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2022
·
IF 6.364
Wentao Hao,Panpan Xu,Peide Han,Mingwen Wang
Reduction of dielectric loss for CCTO ceramics is a prerequisite for their applications. Considering internal barrier layer capacitance effect, improving the capacitance and grain boundary resistance is an effective way to reduce dielectric loss. Therefore, more conductive Ti 3+ and Cu + ions were introduced to grains by adding carbon to ceramic bodies, improving the permittivity of CCTO ceramics. Annealing was performed to increase the grain boundary resistance. The dielectric loss of the CCTO ceramics thus prepared, which maintain a giant permittivity, is significantly reduced. Specifically, the CCTO ceramic with carbon addition, which was sintered at 1080 °C for 8 h and air annealed at 950 °C for 2 h, exhibits a giant permittivity of about 2.50(5)×10 4 and a low dielectric loss of less than 0.050(2) from below 20 Hz to 50 kHz at room temperature. Meanwhile, its dielectric loss at 1–10 kHz is less than 0.050(2) from below room temperature to about 100 °C.
研究领域:
材料科学
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电子材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Qinong Shao,Chenhui Yan,Mingxi Gao,Wubin Du,Jian Chen,Yaxiong Yang,Jiantuo Gan,Zhijun Wu,Wenping Sun,Yinzhu Jiang,Yongfeng Liu,Mingxia Gao,Hongge Pan
Halide solid electrolytes have been considered as the most promising candidates for practical high-voltage all-solid-state lithium-ion batteries (ASSLIBs) due to their moderate ionic conductivity and good interfacial compatibility with oxide cathode materials. Aliovalent ion doping is an effective strategy to increase the ionic conductivity of halide electrolytes. However, the effects of ion doping on the electrochemical stability window of halide electrolytes and carbon additive on electrochemical performance are still unclear by far. Herein, a series of Zr-doped Li3–xEr1–xZrxCl6 halide solid electrolytes (SEs) are synthesized through a mechanochemical method and the effects of Zr substitution on the ionic conductivity and electrochemical stability window are systematically investigated. Zr doping can increase the ionic conductivity, whereas it narrows the electrochemical stability window of the Li3ErCl6 electrolyte simultaneously. The optimized Li2.6Er0.6Zr0.4Cl6 electrolyte exhibits both a high ionic conductivity of 1.13 mS cm–1 and a high oxidation voltage of 4.21 V. Furthermore, carbon additives are demonstrated to be beneficial for achieving high discharge capacity and better cycling stability and rate performance for halide-based ASSLIBs, which are completely different from the case of sulfide electrolytes. ASSLIBs with uncoated LiCoO2 cathode and carbon additives exhibit a high discharge capacity of 147.5 mAh g–1 and superior cycling stability with a capacity retention of 77% after 500 cycles. This work provides an in-depth understanding of the influence of ion doping and carbon additives on halide solid electrolytes and feasible strategies to realize high-energy-density ASSLIBs.
研究领域:
材料科学
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电化学
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电池技术
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Min Hu,Jing Cao,Siyue Xiang,Ziye Xiang,Lurong Liu,Junfeng Zhang
This study innovatively employs a two-step process of ball-milling degradation and carbonization to convert waste PET plastics into porous carbon material (PET-C) rich in oxygen-containing functional groups, which functions as a high-performance additive for lead-acid battery anodes while achieving the high-value utilization of waste plastics. Leveraging a unique process design, the prepared PET-C combines a hierarchical pore structure with abundant surface carbonyl/carboxyl functional groups. This synergistic "pore-functional group" effect dramatically improves charge transfer efficiency and effectively inhibits irreversible PbSO 4 deposition. Remarkably, even trace amounts of PET-C substantially improve battery performance—the cycle life of a battery with 1 % PET-C reaches an impressive 21,062 cycles, representing an 11.35-fold increase compared to the control battery (1855 cycles), while a low carbon concentration of 0.3 % PET-C still maintains 7357 cycles. This study pioneers the integration of ball-milling plastic degradation with energy material preparation, thereby presenting a dual-pronged solution to "white pollution" management and lead-carbon battery (LCB) performance enhancement. The research not only elucidates the critical impact of carbon material surface chemistry on battery performance but also demonstrates the successful application of circular economy principles in the field of energy materials.
研究领域:
材料科学
·
储能
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环境科学
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化学工程
·
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）