ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Renming Zhan,Bolei Shen,Qiuju Xu,Youquan Zhang,Yushan Luo,Heng Liu,Hao Chen,Feng Liu,Changming Li,Maowen Xu
Pristine Na 3 Fe 0.5 V 1.5 (PO 4 ) 3 and carbon-coated Na 3 Fe 0.5 V 1.5 (PO 4 ) 3 nano-particles are synthesized by one-step solid-phase reaction method. The full battery based on Na 3 Fe 0.5 V 1.5 (PO 4 ) 3 @C nano-particles as cathode and commercial hard carbon as anode outputs a high working voltage about 3.3 V and exhibits superior-rate performance. While the rate increases from 0.5 to 1, 2 and 5 C, the discharge capacity of full battery slightly decreases from 110 to 94, 88, 79 mA h g −1 gradually. Moreover, it shows excellent cycle stability with a capacity retention of 93.8% after 200 cycles at 0.5 C.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2022
·Vol. 9
·期 15
·e202200256
·
IF 4.782
Rongrong Miao,Songheng Xie,Xiang Lin,Tao Zhang,Jingang Song,Xiangxuan Huang
Graphical Facile and scalable route to MnS@NSC composite : A sub-micro MnS@NSC composite was synthesized facilely by employing low-cost commercial MnS as raw material and in-situ compositing with N,S-codoped carbon, which exhibit excellent electrochemical performance in half/full lithium-ion cells. Nanostructured manganese sulfide (MnS) has been verified to be effective to address the issues of MnS as next-generation anode material in high energy lithium-ion batteries (LIBs). The scale-up fabrication, however, is still challenged by the multistep and rigid processes of synthesizing MnS nanoparticles. Herein, by using micro-sized MnS as low-cost MnS source, we present a facile, cost-effective and scalable strategy to prepare a sub-micrometer sized MnS@NSC composite, in which MnS nanoparticles are encapsulated into N,S-codoped carbon matrix (NSC) deriving from polyacrylonitrile (PAN). The NSC matrix combined with homogeneously distributed MnS nanoparticles crushed from micro-MnS provide fast access of lithium ion/electron and robust structure, leading to remarkable cycling stability (551.6 mAh g −1 at 0.5 A g −1 even after 400 cycles) and desirable rate capability (624 mAh g −1 at 0.1 A g −1 and around 300 mAh g −1 at 2 A g −1 ). Particularly, the assembled LIB full cell by coupling the anode with LiFePO 4 (LFP) cathode presents an encouragingly cycling retention of 96 % after 100 cycles. This work provides a new possibility for design and industrial implementation of MnS as advanced anode materials for LIBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Journal of Advanced Ceramics
·
2022
·Vol. 11
·期 10
·1530-1541
·
IF 11.534
Zhang Chang,Hu Xiangchen,Nie Zhiwei,Wu Cong,Zheng Nan,Chen Shaojie,Yang Yihang,Wei Ran,Yu Jiameng,Yang Nan,Yu Yi,Liu Wei
Garnet-type oxide is one of the most promising solid-state electrolytes (SSEs) for solid-state lithium-metal batteries (SSLMBs). However, the Li dendrite formation in garnet oxides obstructs the further development of the SSLMBs seriously. Here, we report a high-performance garnet oxide by using AlN as a sintering additive and Li as an anode interface layer. AlN with high thermal conductivity can promote the sintering activity of the garnet oxides, resulting in larger particle size and higher relative density. Moreover, Li 3 N with high ionic conductivity formed at grain boundaries and interface can also improve Li-ion transport kinetics. As a result, the garnet oxide electrolytes with AlN show enhanced thermal conductivity, improved ionic conductivity, reduced electronic conductivity, and increased critical current density (CCD), compared with the counterpart using Al 2 O 3 sintering aid. In addition, Li symmetric cells and Li∣LiFePO 4 (Li∣LFP) half cells using the garnet electrolyte with the AlN additive exhibit good electrochemical performances. This work provides a simple and effective strategy for high-performance SSEs.
研究领域:
材料科学
·
电化学
·
能量存储
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Lei Wang,Jiawei Yan,Min Zhong,Jiali Zhang,Wenzhuo Shen,Shouwu Guo
Gel electrolytes hold great promise for improving the safety of lithium-ion batteries (LIBs); however, their low lithium-ion transference number (tLi+ < 0.4) remains to be improved. Herein, boron-containing poly(vinyl alcohol) (B-PVA) solutions are prepared based on the simple reaction between PVA and H3BO3 and then electrospun to obtain the B-PVA nanofiber matrices. The gel electrolytes are formed by loading the liquid electrolytes into the as-obtained porous B-PVA matrices. We demonstrate that the tLi+ of B-PVA8 (with 8 wt % H3BO3 added) gel electrolyte can reach 0.81, much higher than that of the conventional PVA gel electrolyte (0.32). The B-PVA8 gel electrolyte also shows the highest Li+ conductivity of 1.81 × 10–3 S cm–1 compared to PVA. The B-PVA8 gel electrolyte enables a small Li nucleation overpotential of 129.8 mV when Li is plated and reduces the concentration polarization of Li||Li batteries. The mesocarbon microbead (MCMB) half-coin cells with the B-PVA8 gel electrolyte exhibit excellent rate capability and exceptional charge/discharge cycling stability.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2021
·Vol. 13
·期 13
·6635-6643
·
IF 7.79
Die Su,Jing Dai,Min Yang,Jiaxing Wen,Jianping Yang,Wen Liu,Hai Hu,Li Liu,Yan Feng
TiO2-red phosphorus/C nanofibers (TiO2-RP/CN) have been synthesized via electrospinning and then annealed with red phosphorus sublimation. Benefiting from the high electronic/ionic conductivity and robust stability of the unique structure, the TiO2-RP/CN show high reversible capacities, as well as an outstanding cycling ability. In K half cells, the capacity decay of the TiO2-RP/CN electrode mainly occurs in the first few cycles, and at 0.05 A g−1 it delivers a high specific capacity of 257.8 mA h g−1 after 500 cycles. K full cells were fabricated; these are well-matched with PTCDA (perylene-3,4,9,10-tetracarboxylic dianhydride) and also exhibited a good electrochemical performance (62 mA h g−1 after 100 cycles). Therefore, the TiO2-RP/CN are potential anode materials for use in K-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Chenghong Sun,Enze Zhu,Chaoyang Shi,Juan Yu,Shubiao Yin,Chunxia Liu,Xiaoying Cui,Weiping Liu,Mingli Xu
The vigorous development of efficient cathode-side oxygen reduction reaction (ORR) catalysts is one of the keys to the practical application of fuel cells and Zn-air batteries (ZABs). Herein, a facile and green photochemical method is developed to synthesize pure-phase Mn 3 O 4 nanoparticles , which are uniformly anchored on nitrogen-doped reduced graphene oxide (N-rGO), followed by simple one-step annealing to highly catalytical active and stable MnO/N-rGO. The resultant MnO/N-rGO exhibits exciting ORR performance in alkaline media. Particularly, both GDE (gas diffusion electrode) half-cell and ZABs assembled from MnO/N-rGO have excellent overall performance and outstanding long-term durability, obviously better than Pt/C-based GDE half-cell and Pt/C + RuO 2 -based ZABs, respectively. It is mainly attributed to the synergistic effect between MnO nanoparticles and N-rGO support, which significantly increases the active sites and facilitates 4-electron transfer. This research paves a way for the green photochemical synthesis of transition metal oxide ORR catalysts at room temperature.
研究领域:
材料科学
·
电化学
·
能源存储
·
催化
✓ 已验证
DOI
高影响因子
Energy Technology
·
2017
·Vol. 6
·期 2
·326-332
·
IF 2.789
Ailian Wang,Hao Xu,Fulin Liu,Xu Liu,Shi Wang,Qian Zhou,Jie Chen,Shiyong Yang,Liaoyun Zhang
A new solid polymer electrolyte composed of a polyimide matrix, an ionic liquid additive (1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, [Bmim][TFSI]), and a lithium salt (lithium bis(trifluoromethanesulfonyl)imide, LiTFSI) is fabricated by the solution-casting technique. The obtained self-standing polyimide (PI)-based polymer electrolyte (PI-100 %BmimTFSI-60 %LiTFSI) membranes show a great flexibility, transparency, and infiltration ability. As a result of the high thermal stability of the polyimide matrix, the thermal decomposition temperature of the electrolyte is high (420 °C). The ionic conductivity can be up to 1.73×10 −5 S cm −1 at room temperature and reaches 1.26×10 −3 S cm −1 at 80 °C. In addition, the PI-100 %BmimTFSI-60 %LiTFSI electrolytes have a wide electrochemical stability window of 4.8 V, a general lithium ion transference number of 0.12, and good interfacial stability and compatibility. In particular, the assembled LiFePO 4 /Li half cells made from this polyimide-based electrolyte can light up a light-emitting diode lamp at room temperature.
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
Nano-Micro Letters
·
2022
·Vol. 14
·期 1
·1-13
·
IF 23.655
Jiang Meifang,Mu Pengzhou,Zhang Huanrui,Dong Tiantian,Tang Ben,Qiu Huayu,Chen Zhou,Cui Guanglei
The double-network binder shows excellent adhesive and self-healing abilities, which help suppress electrode volume expansion and stabilize the electrode interface upon cycling.
This binder induces a Li 3 N/LiF-rich solid electrolyte interface layer, which can suppress continuous electrolyte decomposition.
Superior electrochemical performance can be achieved in Si/Li half cells and LiNi 0.8 Co 0.1 Mn 0.1 O 2 /Si full cells, even with a high loading of Si electrode.
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
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Yuli Wang,Zonglei Wang,Yunyang Zhao,Xueting Yang,Jie Xu,Xianke Ye,Xiancai Jiang,Yazhou Chen,Chen Li,Dezhan Ye
In-situ polymerization of gel polymer electrolyte (GPE) is expected to be promising approach to solve the safety and interfacial problems of lithium ion battery, but it is still challenging ways to tradeoff the high electrochemical properties and mechanical toughness. Here, 30 μm thickness of free-standing GPEs with extremely high monomer conversion were obtained by in-situ UV approach on lithium metal anode within only few seconds. The coordination of amide and aliphatic carbonyl groups with lithium ion endows the tough mechanical properties, which tensile strength and elongation at break reach up to ∼1.0 MPa and ∼920 %. Furthermore, the good degree of graphitization on the surface of burned polymer gel contribute to its flame resistance. The ionic conductivity and lithium ion transferance number are up to 1.03 mS/cm and 0.44 at room temperature , respectively. Finally, Li/LiFePO 4 half cells assembled with the optimized GPEs exhibit stable cycle performance at 0.5C rate, delivering 77.44 % of capacity retention after 1000 cycles.
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
ChemElectroChem
·
2020
·Vol. 7
·期 13
·2896-2904
·
IF 4.154
Yunyan Zhang,Rengui Xiao,Xia Liao,Zhiming Ma,Yu Huang,Qianqian Li
Graphical Layer it on : The primary focus of this study is to adjust electrochemical polymerization parameters, enable electrodeposition of the polyaniline process to be faster than the dissolution of the bare Cu foil, thus the nanoscale polyaniline particles can be deposited onto the Cu foil surface. The existence of the PANI layer on the surface of the Cu foil is favorable for the improvement of the battery electrical performance. Herein, a new type of composite anode with a Cu foil current collector modified with polyaniline (PANI) was prepared (PANI/Cu). SEM manifests that the PANI layer is 1.8 μm thick and composed of PANI particles with a diameter of 50 nm nanometers, which provides a large contact surface area to enhance the strength of adhesion to the electrode material. FTIR and UV/Vis analysis confirmed that the PANI layer existed in the emeraldine (conductive) form. Half-cells were assembled by using PANI/Cu and bare/Cu (both coated with Li 4 Ti 5 O 12 electrode material) as the working electrode, and Li wafers as the counter electrode. Cycling performance tests demonstrated that, after cycling for 500 cycles at 1 C, the discharge capacity was 155.0 mAh g −1 and 137.6 mAh g −1 for PANI/Cu battery and bare/Cu battery, respectively. Electrochemical impedance revealed the impedance of the PANI/Cu battery is decreased effectively by the PANI layer.
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
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Shaoping Wu,Hongpeng Zheng,Nan Zhang,Weizheng Cheng,Hezhou Liu,Huanan Duan
Gel electrolyte composite with high areal capacity cathode effectively improves battery energy density and safety. Still, the insufficient interface contact between electrolyte and electrode limits the capacity release inside the thick cathode. Here, we rationally design a self-supporting cathode and use the in-situ polymerization method to integrate the gel electrolyte with the cathode. This cathode can effectively reduce the content of inactive electrode components. Meanwhile, the design of the regularly-arranged pore structure of the cathode introduced by laser texturing facilitates the penetration of the prepolymer solution and enables outstanding lithium-ion transport. Notably, the quasi-solid LiFePO 4 /Li half-cell with active material loading of 8 mg cm −2 exhibits good electrochemical performance (118.5 mAh g −1 after 100 cycles at 0.2C at room temperature). Moreover, when the loading of active materials increases to 30 mg cm −2 , the LiFePO 4 /Li 4 Ti 5 O 12 full-cell can still have a relatively high discharge capacity (105.9 mAh g −1 after 400 cycles at 0.2C at room temperature). It is worth noting that the quasi-solid pouch cell prepared by in-situ polymerization has a certain flexibility, indicating that this strategy has application potential in flexible electronic devices.
研究领域:
材料科学
·
电化学
·
电池技术
·
柔性电子
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）