Gradient three-dimensional current collector with lithiophilic nanolayer regulation for efficient lithium metal anode construction.

Metallic lithium (Li) is highly desirable for Li battery anodes due to its unique advantages. However, the growth of Li dendrites poses challenges for commercialization. To address this issue, researchers have proposed various three-dimensional (3D) current collectors.

Self-Formed Protection Layer on a 3D Lithium Metal Anode for Ultrastable Lithium-Sulfur Batteries.

Lithium metal anodes are a key component of high-energy-density lithium-sulfur (Li-S) batteries. However, the issues associated with lithium anodes remain unsolved owing to the immature lithium anode construction and protection technology, which leads to internal short circuits, poor capacity retention, and low coulombic efficiency for high-sulfur-loading Li-S batteries. Herein, a highly stable 3D lithium carbon fiber composite (3D LiCF) anode for high-sulfur-loading Li-S batteries was demonstrated, in which a self-formed hybrid solid-electrolyte protection layer was constructed on a lithium metal surface through codeposition of thiophenolate ions and inorganic lithium salts by using diphenyl disulfide as a co-additive in the electrolyte.

Reversibility of Noble Metal-Catalyzed Aprotic Li-O₂ Batteries.

The aprotic Li-O2 battery has attracted a great deal of interest because, theoretically, it can store far more energy than today's batteries. Toward unlocking the energy capabilities of this neotype energy storage system, noble metal-catalyzed high surface area carbon materials have been widely used as the O2 cathodes, and some of them exhibit excellent electrochemical performances in terms of round-trip efficiency and cycle life. However, whether these outstanding electrochemical performances are backed by the reversible formation/decomposition of Li2O2, i.

[Comparative observation of efficacy on lumbar disc herniation treated with acupotomology and operation].

Objective: To compare the efficacy difference between acupotomology and operation in the treatment of lumbar disc herniation (LDH).

Methods: One hundred and eighty-four cases were randomized into an acupotomology group (109 cases) and an operation group (75 cases). In acupotomology group, acupotomology was applied to relevant local soft tissues in LDH and the reactive points in the distribution of superior gluteal nerves, at the outlet of sciatic nerve and in the nerve innervate area of the lower extremities separately.