Mesoporous Ge/GeO<sub>2</sub>/Carbon Lithium-Ion Battery Anodes with High Capacity and High Reversibility

Hwang, Jongkook; Jo, Changshin; Kim, Min; Chun, Jinyoung; Lim, Eunho; Kim, Seongseop; Jeong, Soo‐Hwan; Kim, Young‐Sik; Lee, Jinwoo

doi:10.1021/acsnano.5b00817

Cited by 160 publications

(103 citation statements)

References 53 publications

Supporting

Mentioning

100

Contrasting

Order By: Relevance

“…At the first cathodic curve, the irreversible feature at 0.25 V can be attributed to reduction of GeO 2 into Ge and Li 2 O. The broad peaks observed at voltages of 0.2 V and 0.01 V are attributed to Li-Ge alloys formation and the CMS lithium intercalation process [10,11]. From the second cycle onward, two reduction peaks at 0.47V and 0.14V related to the formation of Li 9 Ge 4 and Li 15 Ge 4 appeared.…”

Section: Electrochemical Measurementsmentioning

confidence: 97%

Electrochemical Characteristics of GeO_x-Coated Graphitic Carbon as Anode Material in Lithium-Ion Batteries

Zhou¹,

Xu²,

Li³

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. In the present study, GeO x -coated graphitic carbon composites were synthesized by coating graphitic carbon with GeO x through chemical reduction method. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to characterize the structure and morphology of the composites, while galvanostatic charge/discharge and cyclic voltammetry (CV) were carried out to measure their electrochemical performance as an anode material for Li-ion batteries. The experimental results indicated that the GeO x -coated graphitic carbon composites show initial reversible capacity of 465.6 mAh g -1. After 30 cycles, the electrode capacity was still maintained at 437.6 mAh g -1 , and the capacity retention is 93.98%.

show abstract

Section: Electrochemical Measurementsmentioning

confidence: 97%

Electrochemical Characteristics of GeO_x-Coated Graphitic Carbon as Anode Material in Lithium-Ion Batteries

Zhou¹,

Xu²,

Li³

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…Among them are chemical vapor deposition (CVD) involving germanes, [288,289] electrochemical reduction of Group 14 halides [290][291][292][293] and reduction of Ge(IV) oxide with hydrogen or alkali metals. [294][295][296][297][298] In addition GeNWs were also grown from Au nanoseeds. [299][300][301] Recently, Bentlohner et al used [Ge 9 ] 4-Zintl clusters as soluble Ge-source for a bottom-up fabrication of Ge nanomorphologies such as inverse opal structures with tunable composition (see Figure 17).…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Hybrid Photovoltaics – from Fundamentals towards Application

Müller‐Buschbaum

Thelakkat

Fässler

et al. 2017

Advanced Energy Materials

View full text Add to dashboard Cite

In hybrid photovoltaics, an organic and an inorganic semiconductor are combined in the active layer, with the advantages of both material classes in a single device. The organic component contributes towards the possibility for wet chemical device preparation with potentially low costs in combination with achieving flexible devices. From the inorganic component an increase in stability, as well as superior opto‐electronic properties, is added. Given the large diversity of organic and inorganic semiconductors, a large number of possible realizations of hybrid solar cells emerge. In the present review, we limit to hybrid solar cells which combine conjugated polymers with inorganic materials such as titanium dioxide, zinc oxide, silicon, germanium and quantum dots to keep focused. Particular emphasis is put on different routes to tailor nanostructures, such as the use of semiconductor block copolymers. The inorganic component is either synthesized directly in one of the blocks or added as a pre‐synthesized nanomaterial to form the hybrid material. Alternatively, the block copolymer is used as a structure‐directing template in a sol–gel synthesis approach to have tailored inorganic nanostructures, which are back‐filled with the organic component to fabricate the hybrid material. Hybrid solar cells based on crystalline Si are discussed for comparison.

show abstract

“…Metal oxides, such as Fe 2 O 3 [7], GeO 2 [8], MnO [9], SnO [10], and ZnO [11], have appealed to many researchers working in LIB technology due to their high theoretical capacity values, comparatively safe handling and cost-effectiveness [12]. Among these materials, zinc oxide (ZnO) has shown the potential to be a prospective anode material.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of the ZnO@ZnS Nanorod for Lithium-Ion Batteries

Wang

Zhao

et al. 2018

Energies

View full text Add to dashboard Cite

Abstract:The ZnO@ZnS nanorod is synthesized by solvothermal method as an anode material for lithium ion batteries. ZnS is deposited on ZnO and assembles in nanorod geometry successfully. The nanosized rod structure supports ion diffusion by substantially reducing the ion channel. The close-linking of ZnS and ZnO improves the synergetic effect. ZnS is in the middle of the ZnO core and the external environment, which would greatly relieve the volume change of the ZnO core during the Li + intercalation/de-intercalation processes; therefore, the ZnO@ZnS nanorod is helpful in maintaining excellent cycle stability. The ZnO@ZnS nanorod shows a high discharge capacity of 513.4 mAh g −1 at a current density of 200 mA g −1 after 100 cycles, while a reversible capacity of 385.6 mAh g −1 is achieved at 1000 mA g −1 .

show abstract

Mesoporous Ge/GeO₂/Carbon Lithium-Ion Battery Anodes with High Capacity and High Reversibility

Cited by 160 publications

References 53 publications

Electrochemical Characteristics of GeO_x-Coated Graphitic Carbon as Anode Material in Lithium-Ion Batteries

Electrochemical Characteristics of GeO_x-Coated Graphitic Carbon as Anode Material in Lithium-Ion Batteries

Hybrid Photovoltaics – from Fundamentals towards Application

Synthesis of the ZnO@ZnS Nanorod for Lithium-Ion Batteries

Contact Info

Product

Resources

About

Mesoporous Ge/GeO2/Carbon Lithium-Ion Battery Anodes with High Capacity and High Reversibility

Cited by 160 publications

References 53 publications

Electrochemical Characteristics of GeOx-Coated Graphitic Carbon as Anode Material in Lithium-Ion Batteries

Electrochemical Characteristics of GeOx-Coated Graphitic Carbon as Anode Material in Lithium-Ion Batteries

Hybrid Photovoltaics – from Fundamentals towards Application

Synthesis of the ZnO@ZnS Nanorod for Lithium-Ion Batteries

Contact Info

Product

Resources

About

Mesoporous Ge/GeO₂/Carbon Lithium-Ion Battery Anodes with High Capacity and High Reversibility

Electrochemical Characteristics of GeO_x-Coated Graphitic Carbon as Anode Material in Lithium-Ion Batteries

Electrochemical Characteristics of GeO_x-Coated Graphitic Carbon as Anode Material in Lithium-Ion Batteries