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青藏高原土壤有机碳储量与密度分布 [PDF]

open access: yes, 2008
采用全国第二次土壤普查数据结合作者的实测数据,利用1∶100万土壤数据库对青藏高原土壤有机质层、土壤矿质层及整个剖面的土壤有机碳密度和土壤有机碳储量分别进行了估算。结果表明:青藏高原的平均土壤有机碳密度约为C7.2kgm-2,较前人的C8.01~19.05kgm-2全国平均土壤有机碳密度偏低。青藏高原总的土壤有机碳储量约为18.37Pg,其中有机质层土壤有机碳储量约占38.14%,矿质层土壤有机碳储量则占61.86%。中国科学院知识创新工程重要方向项目(KZCX3-SW-339-04 ...
欧阳华   +4 more
core   +1 more source

Bi/Bi2O3 Nanoparticles In Situ Embedded in Carbon as Anode Materials for Fast and Long‐Lasting Sodium–Ion Storage

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Bismuth anode materials are considered promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacity and appropriate working potential. Nevertheless, the significant volume expansion that occurs during the cycling process restricts its broader application in sodium–ion storage. Herein, Bi/Bi2O3 nanoparticles
Jiaju Lu   +3 more
wiley   +1 more source

Ionic‐Liquid‐Assisted Synthesis of NiTe/CoTe Heterostructure With Te Vacancies in N, P, and F Co‐Doped Hollow Carbon Nanorods for Efficient Alkaline Hydrogen Evolution and High‐Performance Flexible Supercapacitors

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Low conductivity, slow ion‐diffusion, and limited reactive sites are common problems in electrocatalysts and electrode materials. In this study, a complex NiTe–CoTe heterojunction with abundant Te vacancies embedded in N, P, and F co‐doped hollow carbon nanorods (NiTe1−x–CoTe1−x/NPFC) was fabricated via a simple ionic liquid‐assisted ...
Mingjie Yi   +7 more
wiley   +1 more source

Multiscale Study of a Synergistic System in Carbon‐Coated Multimetal‐Based Selenides Toward Rapid and Highly Stable Sodium Storage

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu   +5 more
wiley   +1 more source

Sodiumation of Biomass‐Derived Quinones Enables High‐Rate and Long‐Life Cathodes for Sodium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Biomass‐derived quinones are promising green and sustainable cathode materials for sodium‐ion batteries (SIBs), yet their practical application is hindered by poor cycling stability due to dissolution in conventional electrolytes. Herein, we demonstrate that sodiumation is an effective strategy to enhance both rate capability and cycling ...
Xinyue Zhu   +4 more
wiley   +1 more source

Redox Reaction and Dissolution Analysis for Hollow C Nanospheres Comprising N‐Doped C Framework With Abundant Ni–Co Heteronuclear Catalysts for Highly Durable K‒Te Batteries

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho   +7 more
wiley   +1 more source

Electronic Modulation of Cu Sites via Iron Incorporation in Cu5FeS4 Bimetallic Sulfide for High‐Efficiency Oxygen Reduction Reaction

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT The sluggish kinetics of the oxygen reduction reaction (ORR) necessitate developing oxygen electrodes with enhanced electrocatalytic activity for practical zinc–air battery applications. In this study, an iron‐doped copper sulfide electrocatalyst (CuFeNS‐PNC) anchored on metal–organic framework‐derived carbon substrates was designed, featuring
Taichong Chitboonyakasem   +4 more
wiley   +1 more source

Porous Mn2O3@C Cathode With High Activity and Long Lifespan for Aqueous Zinc Ion Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Manganese‐based oxides are widely employed as cathode materials for aqueous zinc ion batteries (AZIBs) due to their low toxicity and high theoretical specific capacity. However, their inherent poor electrical conductivity, coupled with the dissolution of manganese into the electrolyte, often leads to structural degradation of the cathode.
Cheng‐Jie Yin   +5 more
wiley   +1 more source

High‐Performance Sodium‐Ion Capacitors With Kinetics‐Matched Characteristics Enabled by N/O/S‐Doped Homologous Carbon Electrodes Derived From a Single Precursor

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Sodium‐ion capacitors (SICs) offer high energy and power density with long cycle life, but developing kinetically compatible electrodes remains challenging. This work developed a simple and sustainable strategy to synthesize homologous carbon electrodes from the inner shells of durian husks (ISDH) for high‐performance SICs.
De‐Bing Yan   +7 more
wiley   +1 more source

Sulfur‐Doped Carbon Matrix‐Coated Co1‐xS/Ni0.96S@NC Rhombic Cubes Significantly Enhanced the Storage Performance and Kinetics of Lithium/Sodium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Metal sulfide, as a type of lithium/sodium‐ion battery material, possesses merits such as high capacity and low cost. Nevertheless, it is prone to structural changes during the cycling process, leading to volume changes and affecting electrochemical performance.
Wenjin Qin   +7 more
wiley   +1 more source

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