hierarchically porous graphene as a lithium-air battery

CA2937765A1

The graphene oxide sheets may be used as pre-cursors for the formation of porous graphene network (PGN) anodes and lithiated porous graphene (Li-PGN) cathodes. The method of making PGN electrodes includes thermally reducing a pre-cursor sheet of graphene oxide to provide a PGN anode and exposing the sheet to lithium or a lithium- containing compound to produce a Li-PGN cathode.

Hierarchically porous carbon derived from wheat straw

Porous biochar for anode material of lithium ion battery (LIBs) was prepared from wheat straw, one of the most common biomass of agricultural waste in China, with KOH using as activator. Microstructure of the porous biochar was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) as well as Brunauer–Emmett–Teller (BET). The porous biochar prepared contains parallel

Unprecedented and highly stable lithium storage capacity

Herein, we report a (001) faceted nanosheet-constructed hierarchically porous TiO 2 /rGO hybrid architecture with unprecedented and highly stable lithium storage performance. Density functional theory calculations show that the (001) faceted TiO 2 nanosheets enable enhanced reaction kinetics by reinforcing their contact with the electrolyte and shortening the path length of Li + diffusion and

Ruthenium oxide modified hierarchically porous boron

Ruthenium oxide modified hierarchically porous boron-doped graphene aerogels as oxygen electrode for lithium oxygen batteries Xiuhui Zhanga, Chunguang Chena, Xiang Chenb, Tie Liua, Mengmeng Liub, Congcong Zhangb, Tao, Huangb, Aishui Yua,b,* aDepartment of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and

Graphene Oxide Gel‐Derived, Free‐Standing,

Graphene Oxide Gel‐Derived, Free‐Standing, Hierarchically Porous Carbon for High‐Capacity and High‐Rate Rechargeable Li‐O 2 Batteries Zhong‐Li Wang State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China

Graphene battery vs Lithium

2019/8/20Graphene batteries are said to be the absolute alternative to our current-gen lithium-ion batteries. Graphene batteries are itself quite lightweight, advanced and powerful. Graphene has been found to be a superior material as it not only has higher electrical and heat conductivity, but it's also quite lightweight, flexible, and durable.

3D graphene with high surface area and large

Recently, Zhang's group has succeeded in creating a novel 3D porous graphene framework (PGF) that inherits the hierarchical mesoporous structure of oxide templates. The as-obtained material possesses a high surface area of 1448 m 2 g -1, 91.6% of which is contributed by mesopores, and a high mesopore volume of 2.40 cm 3 g -1 .

Inward Lithium

article{osti_1243285, title = {Inward Lithium-Ion Breathing of Hierarchically Porous Silicon Anodes}, author = {Xiao, Qiangfeng and Gu, Meng and Yang, Hui and Li, Bing and Zhang, Cunman and Liu, Yang and Liu, Fang and Dai, Fang and Yang, Li and Liu, Zhongyi and Xiao, Xingcheng and Liu, Gao and Zhao, Peng and Zhang, Sulin and Wang, Chong M. and Lu, Yunfeng and Cai, Mei}, abstractNote

Hierarchically Nanostructured Transition Metal Oxides

SEM and TEM images (Figure 14b,c) show that the as‐prepared sample possesses the hierarchically porous structure and the graphene sheets are coated uniformly with the Nb 2 O 5 nanoparticles. Notably, this material can realize high areal capacity and high‐rate capability at high mass loading.

New graphene

New graphene-based lithium-air battery may enable New graphene-based lithium-air battery may enable longer-running electric cars Researchers at the Korean Daegu Gyeongbuk Institute of Science and Technology (DGIST) have fabricated an electrode using nickel cobalt sulphide nanoflakes on a sulfur-doped graphene, leading to a long-life battery with high discharge capacity.

New design points a path to the 'ultimate' battery

A small voltage gap equals a more efficient battery – previous versions of a lithium-air battery have only managed to get the gap down to 0.5 – 1.0 volts, whereas 0.2 volts is closer to that of a Li-ion battery, and equates to an energy efficiency of 93%.

Highly Rechargeable Lithium

Metal-air batteries, especially Li-air batteries, have attracted significant research attention in the past decade. However, the electrochemical reactions between CO 2 (0.04 % in ambient air) with Li anode may lead to the irreversible formation of insulating Li 2 CO 3, making the battery less rechargeable.

New design points a path to the 'ultimate' battery

Scientists have developed a working laboratory demonstrator of a lithium-oxygen battery which has very high energy density, is more than 90% efficient, and, to date, can be recharged more than 2000 times, showing how several of the problems holding back the development of these devices could be solved. Lithium-oxygen, or lithium-air, batteries have been touted as the 'ultimate' battery due

Porous Graphene Materials for Energy Storage and

2015/11/23Porous graphene hybrids can also be produced by thermally treating a mixture of graphene and porous components [48–55]. Rui et al. [ 48 ] produced a V 2 O 5 /rGO composite by thermal pyrolysis of a hybrid of vanadium oxide (VO) and rGO at the temperature of 350C for 30 min under a heating rate of 10C/min in air.

Single Fe Atom on Hierarchically Porous S, N

article{osti_1561217, title = {Single Fe Atom on Hierarchically Porous S, N-Codoped Nanocarbon Derived from Porphyra Enable Boosted Oxygen Catalysis for Rechargeable Zn-Air Batteries}, author = {Zhang, Jiting and Zhang, Meng and Zeng, Yan and Chen, Jisheng and Qiu, Lingxi and Zhou, Hua and Sun, Chengjun and Yu, Ying and Zhu, Chengzhou and Zhu, Zhihong}, abstractNote = {Iron-nitrogen

Graphene Sponge Additives Used for Lithium Battery

Qian Cheng, a researcher from NEC Corporation in Japan, has developed a porous graphene sponge additive, known as Magic G, that can be used in both the anode and the cathode of a lithium-ion battery to increase its rate and power performance.

New design points a path to the 'ultimate' battery

Scientists have developed a working laboratory demonstrator of a lithium-oxygen battery which has very high energy density, is more than 90% efficient, and, to date, can be recharged more than 2000 times, showing how several of the problems holding back the development of these devices could be solved. Lithium-oxygen, or lithium-air, batteries have been touted as the 'ultimate' battery due

Hierarchically structured porous materials: synthesis

Further, a series of hierarchically porous inorganic materials such as TiO 2, Al 2 O 3, ZrO 2 and SiO 2 are also prepared using the obtained porous polymer beads as templates [68, 69]. Similarly, Wang et al. reported a water-in-oil-in-water (W/O/W) emulsion through

Hierarchically Porous Graphene as a Lithium–Air Battery

The lithium–air battery is one of the most promising technologies among various electrochemical energy storage systems. We demonstrate that a novel air electrode consisting of an unusual hierarchical arrangement of functionalized graphene sheets (with no catalyst) delivers an exceptionally high capacity of 15000 mAh/g in lithium–O2 batteries which is the highest value ever reported in this

Hierarchically Porous Graphene as a Lithium

Hierarchically Porous Graphene as a Lithium-Air Battery Electrode Jie Xiao, *,1 Donghai Mei, 2 Xiaolin Li, 2 Wu Xu, 1 Deyu Wang, 1 Gordon L. Graff, 1 Wendy D. Bennett, 1 Zimin Nie, 2 Laxmikant V. Saraf, 1 Ilhan A. Aksay, 3 Jun Liu *,2 and Ji-Guang Zhang *,1

Hierarchically Porous Graphene as a Lithium–Air Battery

The lithium–air battery is one of the most promising technologies among various electrochemical energy storage systems. We demonstrate that a novel air electrode consisting of an unusual hierarchical arrangement of functionalized graphene sheets (with no catalyst) delivers an exceptionally high capacity of 15000 mAh/g in lithium–O2 batteries which is the highest value ever reported in this

Graphene battery vs Lithium

2019/8/20Graphene batteries are said to be the absolute alternative to our current-gen lithium-ion batteries. Graphene batteries are itself quite lightweight, advanced and powerful. Graphene has been found to be a superior material as it not only has higher electrical and heat conductivity, but it's also quite lightweight, flexible, and durable.

Hierarchically porous graphene as a lithium

The lithium-air battery is one of the most promising technologies among various electrochemical energy storage systems. We demonstrate that a novel air electrode consisting of an unusual hierarchical arrangement of functionalized graphene sheets (with no catalyst) delivers an exceptionally high capacity of 15000 mAh/g in lithium-O(2) batteries which is the highest value ever reported in this

New design points a path to the 'ultimate' battery

Scientists have developed a working laboratory demonstrator of a lithium-oxygen battery which has very high energy density, is more than 90% efficient, and, to date, can be recharged more than 2000 times, showing how several of the problems holding back the development of these devices could be solved. Lithium-oxygen, or lithium-air, batteries have been touted as the 'ultimate' battery due

Ruthenium oxide modified hierarchically porous boron

Ruthenium oxide modified hierarchically porous boron-doped graphene aerogels as oxygen electrode for lithium oxygen batteries Xiuhui Zhanga, Chunguang Chena, Xiang Chenb, Tie Liua, Mengmeng Liub, Congcong Zhangb, Tao, Huangb, Aishui Yua,b,* aDepartment of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and

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