Fe3S4@Li7P3S11 nanocomposites as cathode materials for all-solid-state lithium batteries with improved energy density and low cost
Fe3S4@Li7P3S11 nanocomposites as cathode materials for all-solid-state lithium batteries with improved energy density and low cost
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Fe3S4@Li7P3S11纳米复合材料作为全固态锂电池正极材料，能量密度提高且成本低廉
DOI：
10.1039/c7ta07972a
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发表时间：
2017-11
影响因子：
11.9
通讯作者：
Yao Xiayin
中科院分区：
文献类型：
--
作者：
Zhang Qiang;Mwizerwa Jean Pierre;Wan Hongli;Cai Liangting;Xu Xiaoxiong;Yao Xiayin
全固态锂电池因其高安全性和高能量密度而被认为是传统锂离子电池最有前途的替代品之一。为了进一步提高全固态锂电池的能量密度，具有高理论容量的硫化物电极和具有高离子电导率的固体电解质在全固态锂电池中得到了广泛的探索和成功的展示。然而，由于界面相容性差和接触不紧密而产生的界面电阻严重阻碍了全固态锂电池的电化学性能。采用聚乙烯醇辅助沉淀法制备了厚度为15 nm的Fe 3S 4纳米片。为了实现硫化物电极与硫化物固体电解质之间的紧密接触，将Fe 3S 4纳米片原位包覆Li 7 P3 S11，并将其用作Li/75%Li2S-24%P2S5 - 1%P2O5/Li 10 GeP 2S 12/Fe3S4@Li7P3S11全固态锂电池的正极材料，研究其电化学性能。Fe3S4@Li7P3S11纳米复合材料电极表现出比原始Fe 3S 4纳米片更高的放电容量和更好的倍率性能。在200次循环后，放电容量在0.1A g-1的电流密度下保持在1001 mA h g-1的高值。上级的循环稳定性可归因于电极和固体电解质之间的界面处的紧密接触和低电荷转移电阻。
All-solid-state lithium batteries are considered as one of the most promising alternatives to traditional lithium-ion batteries because of their high safety and high energy density. In order to further improve the energy density of all-solid-state lithium batteries, sulfide electrodes with high theoretical capacities and solid electrolytes with high ionic conductivities have been widely explored and successfully demonstrated in all-solid-state lithium batteries. However, the interfacial resistance arising from poor interfacial compatibility and loose contact seriously hinders the electrochemical performances of all-solid-state lithium batteries. Fe3S4 ultrathin nanosheets with a thickness of 15 nm are synthesized by a facile polyvinyl alcohol-assisted precipitation method. In order to achieve intimate contact between sulfide electrodes and sulfide solid electrolytes, Fe3S4 nanosheets are in situ coated with Li7P3S11 and employed as cathode materials in Li/75% Li2S–24% P2S5–1% P2O5/Li10GeP2S12/Fe3S4@Li7P3S11 all-solid-state lithium batteries to investigate their electrochemical performances. Fe3S4@Li7P3S11 nanocomposite electrodes exhibit higher discharge capacity and better rate capability than pristine Fe3S4 nanosheets. After 200 cycles, the discharge capacity remained at a high value of 1001 mA h g−1 at a current density of 0.1 A g−1. The superior cycling stability could be ascribed to intimate contact and low charge transfer resistance at the interface between electrodes and solid electrolytes.
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影响因子：
1.1
作者：
M. Tatsumisago;K. Hirai;T. Minami;K. Takada;S. Kondo
通讯作者：
M. Tatsumisago;K. Hirai;T. Minami;K. Takada;S. Kondo
DOI：
10.1002/celc.201500570
发表时间：
2016-05
期刊：
--
影响因子：
--
作者：
P. Long;Qiang Xu;Gang. Peng;X. Yao;Xiaoxiong Xu
通讯作者：
P. Long;Qiang Xu;Gang. Peng;X. Yao;Xiaoxiong Xu
用于全固态电池的锂超离子导电硫氧化物固体电解质，对金属锂具有优异的稳定性
影响因子：
3.9
作者：
Tao, Yicheng;Chen, Shaojie;Xu, Xiaoxiong
通讯作者：
Xu, Xiaoxiong
影响因子：
3.2
作者：
K. Swider-Lyons;C. Love;D. Rolison
通讯作者：
K. Swider-Lyons;C. Love;D. Rolison
影响因子：
9.5
作者：
K. Aso;A. Sakuda;A. Hayashi;M. Tatsumisago
通讯作者：
K. Aso;A. Sakuda;A. Hayashi;M. Tatsumisago